51CTO.COM 51CTO.COM - 技术成就梦想 - 中国领先的IT技术网站

51cto.com Website Information

Daily Unique Visits: 3,401,487

Daily Page Views: 27,211,896

Income Per Day: $27,212

Estimated Value: $29,388,960

51cto.com is registered under .COM top-level domain. Please check other sites in .COM zone.

No name server records were found.

and is probably hosted by CNNIC-ALIBABA-CN-NET-AP Hangzhou Alibaba Advertising Co.,Ltd., CN. See the full list of other websites hosted by CNNIC-ALIBABA-CN-NET-AP Hangzhou Alibaba Advertising Co.,Ltd., CN.

The highest website 51cto.com position in Alexa rank database was 115 and the lowest rank position was 180837. Current position of 51cto.com in Alexa rank database is 448.

Desktop speed score of 51cto.com (51/100) is better than the results of 24.87% of other sites and shows that the page desktop performance can be improved.

Mobile usability score of 51cto.com (89/100) is better than the results of 31.01% of other sites and means that the page is mobile-friendly.

Mobile speed score of 51cto.com (53/100) is better than the results of 39.51% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

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51cto.com Alexa Rank

The traffic rank is based on three months of aggregated historical traffic data from millions of Alexa Toolbar users and is a combined measure of page views and users.


51cto.com whois

WHOIS gives you the ability to lookup any generic domains to find out the registered domain holder. WHOIS database are provided for information purposes only. It allows the public to check whether a specific domain name is still available or not and to obtain information related to the registration records of existing domain names.


Domain Name: 51CTO.COM
Registry Domain ID: 150614265_DOMAIN_COM-VRSN
Registrar WHOIS Server: grs-whois.hichina.com
Registrar URL: http://www.net.cn
Updated Date: 2020-12-11T03:09:42Z
Creation Date: 2005-04-13T00:38:35Z
Registry Expiry Date: 2024-04-13T00:38:35Z
Registrar: Alibaba Cloud Computing (Beijing) Co., Ltd.
Registrar IANA ID: 420
Registrar Abuse Contact Email: DomainAbuse@service.aliyun.com
Registrar Abuse Contact Phone: +86.95187
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
Name Server: VIP1.ALIDNS.COM
Name Server: VIP2.ALIDNS.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2021-04-24T20:36:09Z

51cto.com server information

Servers Location

51cto.com desktop page speed rank

Last tested: 2017-05-05


Desktop Speed Bad
51/100

51cto.com Desktop Speed Test Quick Summary


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priority - 39Leverage browser caching

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https://s4.51cto.com/wyfs02/M02/94/AD/wKiom1kMJgixEcWFAACtIyT0KXs623.jpg (24 hours)
https://s5.51cto.com/wyfs02/M00/93/62/wKiom1kKv7vz0z4aAAE5Y-oWcdo526.jpg (24 hours)
https://s5.51cto.com/wyfs02/M01/93/B4/wKioL1kLAu7CEqLoAAAWma2oTdg938.jpg (24 hours)
https://s5.51cto.com/wyfs02/M02/93/B5/wKiom1kLAu7wWOAsAAAmWn0u9fI810.jpg (24 hours)

priority - 8Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 3 blocking script resources and 2 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

http://a.yunshipei.com/b2f7c92731089ee90f2ecee00dbb7121/allmobilize.min.js
http://static1.51cto.com/51cto/cms/homepage/2015/js/jquery.js
http://static1.51cto.com/51cto/cms/homepage/2015/js/slide.js

Optimize CSS Delivery of the following:

http://static5.51cto.com/51cto/cms/homepage/2015/css/layout.css
http://static4.51cto.com/51cto/cms/homepage/2015/css/home.css?v=0.5

priority - 1Enable compression

Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.

Enable compression for the following resources to reduce their transfer size by 7.1KiB (60% reduction).

Compressing http://images.51cto.com/images/home/js/ad13.js could save 563B (60% reduction).
Compressing http://images.51cto.com/images/home/js/ad3.js could save 563B (60% reduction).
Compressing http://images.51cto.com/images/home/js/ad4.js could save 563B (60% reduction).
Compressing http://images.51cto.com/images/home/js/ad1.js could save 562B (60% reduction).
Compressing http://images.51cto.com/images/home/js/ad10.js could save 562B (60% reduction).
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Compressing http://images.51cto.com/images/home/js/ad9.js could save 562B (60% reduction).
Compressing http://images.51cto.com/images/home/js/ad5.js could save 561B (60% reduction).

priority - 0Minify JavaScript

Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.

Minify JavaScript for the following resources to reduce their size by 1KiB (33% reduction).

Minifying http://asset3.51cto.com/cms/special/2017/05/04/1691/js/channel_switch0.js could save 1KiB (33% reduction) after compression.

51cto.com Desktop Resource Breakdown

Total Resources142
Number of Hosts33
Static Resources108
JavaScript Resources43
CSS Resources4

51cto.com mobile page speed rank

Last tested: 2019-12-02


Mobile Speed Bad
53/100

51cto.com Mobile Speed Test Quick Summary


priority - 48Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 7 blocking script resources and 2 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

https://static5.51cto.com/51cto/cms/wap/channel/js/zepto.min.js
https://static3.51cto.com/51cto/cms/wap/channel/js/swiper.min.js
https://static1.51cto.com/51cto/cms/wap/channel/js/public.js?v=0.1
https://static3.51cto.com/51cto/cms/wap/channel/js/event.js
https://static3.51cto.com/51cto/cms/wap/channel/js/touch.js
https://static4.51cto.com/51cto/cms/wap/channel/js/vue.js
https://res.wx.qq.com/open/js/jweixin-1.2.0.js

Optimize CSS Delivery of the following:

https://static4.51cto.com/51cto/cms/wap/home/css/public.css
https://static2.51cto.com/51cto/cms/wap/channel/css/swiper.min.css

priority - 34Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 330.9KiB (72% reduction).

Compressing https://s4.51cto.com/oss/201911/26/103ea41d96aa4f7851147411776e285a.jpg could save 72.6KiB (76% reduction).
Compressing https://s4.51cto.com/oss/201911/29/c1700ef6c9cadf8cbe2e1f6ed8107f92.jpg could save 70.2KiB (72% reduction).
Compressing https://s1.51cto.com/oss/201912/02/7fef773879dbcef2e161613428b9badb.jpg could save 66.8KiB (74% reduction).
Compressing https://s3.51cto.com/oss/201911/28/1ebdc899564d4e617074b7dff1cd2930.jpg could save 57.8KiB (73% reduction).
Compressing https://s4.51cto.com/oss/201911/26/d5b01dfbef2865bb34ca56ab286f7562.jpg could save 50.9KiB (71% reduction).
Compressing https://static2.51cto.com/51cto/cms/wap/channel/images/back_top.png could save 1.3KiB (48% reduction).
Compressing https://static4.51cto.com/51cto/cms/wap/home/images/search2.png could save 1.2KiB (57% reduction).
Compressing https://static4.51cto.com/51cto/cms/wap/home/images/navtxbg.jpg could save 1.1KiB (58% reduction).
Compressing https://static2.51cto.com/51cto/cms/wap/channel/images/searchBack.png could save 1.1KiB (66% reduction).
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Compressing https://static3.51cto.com/51cto/cms/wap/channel/images/hamburger.png could save 1KiB (58% reduction).
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Compressing https://static4.51cto.com/51cto/cms/wap/home/images/navmorebg.png could save 775B (63% reduction).
Compressing https://static1.51cto.com/51cto/cms/wap/channel/images/dian.png could save 134B (13% reduction).

priority - 15Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.

Leverage browser caching for the following cacheable resources:

https://static1.51cto.com/51cto/cms/wap/channel/images/dian.png (expiration not specified)
https://static2.51cto.com/51cto/cms/wap/channel/css/swiper.min.css (expiration not specified)
https://static2.51cto.com/51cto/cms/wap/channel/images/back_top.png (expiration not specified)
https://static2.51cto.com/51cto/cms/wap/channel/images/searchBack.png (expiration not specified)
https://static3.51cto.com/51cto/cms/wap/channel/images/hamburger.png (expiration not specified)
https://static3.51cto.com/51cto/cms/wap/channel/images/search.png (expiration not specified)
https://static3.51cto.com/51cto/cms/wap/channel/js/event.js (expiration not specified)
https://static3.51cto.com/51cto/cms/wap/channel/js/swiper.min.js (expiration not specified)
https://static3.51cto.com/51cto/cms/wap/channel/js/touch.js (expiration not specified)
https://static4.51cto.com/51cto/cms/wap/channel/js/vue.js (expiration not specified)
https://static4.51cto.com/51cto/cms/wap/home/css/public.css (expiration not specified)
https://static4.51cto.com/51cto/cms/wap/home/images/navmorebg.png (expiration not specified)
https://static4.51cto.com/51cto/cms/wap/home/images/navtxbg.jpg (expiration not specified)
https://static4.51cto.com/51cto/cms/wap/home/images/search2.png (expiration not specified)
https://static4.51cto.com/51cto/cms/wap/home/images/sidenav_bk.png (expiration not specified)
https://static4.51cto.com/51cto/cms/wap/home/images/sidenav_gz.png (expiration not specified)
https://static4.51cto.com/51cto/cms/wap/home/images/sidenav_wot.png (expiration not specified)
https://static4.51cto.com/51cto/cms/wap/home/images/sidenav_xy.png (expiration not specified)
https://static5.51cto.com/51cto/cms/wap/channel/images/index_logo.png (expiration not specified)
https://static5.51cto.com/51cto/cms/wap/channel/js/zepto.min.js (expiration not specified)

priority - 0Minify JavaScript

Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.

Minify JavaScript for the following resources to reduce their size by 1.5KiB (26% reduction).

Minifying https://static3.51cto.com/51cto/cms/wap/channel/js/touch.js could save 816B (42% reduction) after compression.
Minifying https://static3.51cto.com/51cto/cms/wap/channel/js/event.js could save 515B (18% reduction) after compression.
Minifying https://static1.51cto.com/51cto/cms/wap/channel/js/public.js?v=0.1 could save 193B (19% reduction) after compression.

priority - 0Minify CSS

Compacting CSS code can save many bytes of data and speed up download and parse times.

Minify CSS for the following resources to reduce their size by 423B (13% reduction).

Minifying https://static4.51cto.com/51cto/cms/wap/home/css/public.css could save 423B (13% reduction) after compression.

51cto.com Mobile Resource Breakdown

Total Resources31
Number of Hosts12
Static Resources26
JavaScript Resources8
CSS Resources2

51cto.com mobile page usability

Last tested: 2019-12-02


Mobile Usability Good
89/100

51cto.com Mobile Usability Test Quick Summary


priority - 10Configure the viewport

Your page specifies a fixed-width desktop viewport. Use a responsive viewport to allow your page to render properly on all devices.

51cto.com HTML validation

Warnings

The character encoding “gb2312” is not widely supported. Better interoperability may be achieved by using “UTF-8”.

Line: 5 Column: - 25
"......"

Using “gbk” instead of the declared encoding “gb2312”.

Line: 5 Column: - 25
"......"

The “type” attribute is unnecessary for JavaScript resources.

Line: 20 Column: 1 - 93
"...</script> <script type="text/javascript" src="//static1.51cto.com/51cto/cms/homepage/2015/js/slide.js"></scri..." Line: 468 Column: 12 - 42
"... <script type='text/javascript'><!--//..." Line: 1702 Column: 9 - 39
"...> <script type='text/javascript'><!--//..." Line: 1726 Column: 1 - 31
"...ay:none"> <script type="text/javascript"> var _..." Line: 1731 Column: 1 - 92
"...t> </div> <script type="text/javascript" src="//static3.51cto.com/51cto/cms/homepage/2015/js/home.js"></scri..." Line: 1732 Column: 1 - 92
"...</script> <script type="text/javascript" src="//static4.51cto.com/51cto/cms/homepage/2015/js/ajax.js"></scri..." Line: 1767 Column: 5 - 35
"...one"> <script type="text/javascript">var cn..."

The first occurrence of ID “share” was here.

Line: 557 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 557 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 557 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 557 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 557 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 557 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 557 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 557 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 557 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 557 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 557 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 557 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 557 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 557 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 557 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 557 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 557 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 557 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 557 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 557 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 557 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 557 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 557 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 557 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 557 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 557 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..."

The “type” attribute for the “style” element is not needed and should be omitted.

Line: 1637 Column: 1 - 23
"... </div> <style type="text/css"> ...."

The “charset” attribute on the “script” element is obsolete.

Line: 1672 Column: 1 - 136
"...ay:none"> <script src="https://home.51cto.com/index.php?s=/Index/getLoginStatus2015/reback/http%253A%252F%252Fwww.51cto.com%252F" charset='utf-8'></scri..."

The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.

Line: 1716 Column: 142 - 267
"...='_blank'><img src='//gg.51cto.com/www/delivery/avw.php?zoneid=984&amp;cb=INSERT_RANDOM_NUMBER_HERE&amp;n=a9d27505' border='0' alt='' /></a></..."

Consider adding a “lang” attribute to the “html” start tag to declare the language of this document.

Line: 2 Column: 16 - 6
"...TYPE html> <html> <head..."

Errors

Legacy encoding “gbk” used. Documents must use UTF-8.

Line: Column: -
"......"

Bad value “Cache-Control” for attribute “http-equiv” on element “meta”.

Line: 4 Column: 1 - 56
"...l> <head> <meta http-equiv="Cache-Control" content="no-siteapp" /><link ..."

Bad value “handheld” for attribute “media” on element “link”: Deprecated media type “handheld”. For guidance, see the Media Types section in the current Media Queries specification.

Line: 4 Column: 57 - 106
"...iteapp" /><link rel="alternate" media="handheld" href="#" /> <meta..."

The only allowed value for the “charset” attribute for the “meta” element is “utf-8”.

Line: 5 Column: 1 - 25
"...ef="#" /> <meta charset='gb2312' /> <meta..."

An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.

Line: 116 Column: 30 - 139
"... <img src="https://s5.51cto.com/oss/201908/30/a5c2d1e8f1f457480e821dd37a4f9562.jpg" width="105" height="107" /> ..." Line: 120 Column: 31 - 140
"... <img src="https://s3.51cto.com/oss/201908/30/34f21718b4aa4a94d41c011cc8d99083.jpg" width="105" height="107" /> ..." Line: 124 Column: 31 - 140
"... <img src="https://s5.51cto.com/oss/201902/25/7192b876ce86f586174664495c0a8f6f.jpg" width="107" height="107" /> ..." Line: 128 Column: 31 - 140
"... <img src="https://s3.51cto.com/oss/201712/27/48594addc4b5eebf52a15bd51262ab23.jpg" width="107" height="107" /> ..." Line: 144 Column: 70 - 179
"...="_blank"><img height="90" width="1002" src="https://s2.51cto.com/oss/202006/23/0c657bb462898cc93ce8776bb8c241a3.jpg"></a> <..." Line: 147 Column: 70 - 180
"...="_blank"><img height="500" width="1002" src="https://s5.51cto.com/oss/202006/23/cf1f201d8c953bc6fffa3ad8dff633d8.jpg"></a> ..." Line: 171 Column: 53 - 123
"...1cto.com"><img src="//static2.51cto.com/51cto/cms/homepage/2015/images/logo.gif"></a></..." Line: 215 Column: 30 - 112
"... <img src="https://s2.51cto.com/oss/201912/04/ef44cf1837196e6da516ac82c51a4168.png"> ..." Line: 283 Column: 17 - 102
"... <img src="https://s1.51cto.com/wyfs02/M01/8D/AA/wKiom1ilTDGDKs89AAAFPbvfFgA607.png" /> ..." Line: 321 Column: 17 - 102
"... <img src="https://s4.51cto.com/wyfs02/M02/8D/A7/wKioL1ilTJuiE2kcAAAGyK-ko0s957.png" /> ..." Line: 343 Column: 17 - 102
"... <img src="https://s5.51cto.com/wyfs02/M02/8D/A7/wKioL1ilTMPTIIiLAAAGkAg8DJs942.png" /> ..." Line: 372 Column: 21 - 106
"... <img src="https://s1.51cto.com/wyfs02/M01/8D/AA/wKiom1ilTPHSWMdzAAAEtbI2lKE283.png" /> ..." Line: 415 Column: 3 - 87
"...blank"> <img src="https://s2.51cto.com/oss/202008/10/84c4ed00808c9c2f554fb42678cb8463.jpg" /></a> ..." Line: 424 Column: 3 - 87
"...blank"> <img src="https://s4.51cto.com/oss/202008/03/82bfac1c42bb6e924852d6ccae8d43ae.png" /></a> ..." Line: 433 Column: 3 - 87
"...blank"> <img src="https://s2.51cto.com/oss/202008/03/e33db905aec0ac3d4fa5c66d4fe82309.png" /></a> ..." Line: 442 Column: 3 - 87
"...blank"> <img src="https://s5.51cto.com/oss/202008/04/db2444b35b2aafc79c69a660f5ad3133.jpg" /></a> ..." Line: 451 Column: 3 - 87
"...blank"> <img src="https://s3.51cto.com/oss/202008/10/8f8e76a2529656c2bbfce1ff786fe446.png" /></a> ..." Line: 550 Column: 101 - 210
"...='_blank'><img src='https://s3.51cto.com/oss/202008/10/f2f1ebb37a1c6da03b3e2423f197edb0.jpg-wh_173x112-s_843479716.jpg'></a><p..." Line: 569 Column: 103 - 213
"...='_blank'><img src='https://s1.51cto.com/oss/202008/10/1d74c14e840aa52e7dccccfc56d2b8f7.jpg-wh_173x112-s_3746136146.jpg'></a><p..." Line: 588 Column: 93 - 180
"...="_blank"><img src="https://s1.51ctocdn.cn/images/201912/23/ae002636e053d046c985240383faac93.png"></a><p..." Line: 607 Column: 107 - 217
"...='_blank'><img src='https://s4.51cto.com/oss/202008/10/927bcc66dfc3feb830181be9f162f02d.jpg-wh_173x112-s_3522480975.jpg'></a><p..." Line: 626 Column: 108 - 220
"...='_blank'><img src='https://s4.51cto.com/oss/202008/10/dc94b6b194f65023f3b0a55828805176.jpeg-wh_173x112-s_3010395113.jpeg'></a><p..." Line: 652 Column: 106 - 217
"...='_blank'><img src='https://s3.51cto.com/oss/202008/10/4bcf318355463e20d4fc484d59417e96.jpeg-wh_173x112-s_696750772.jpeg'></a><p..." Line: 671 Column: 107 - 217
"...='_blank'><img src='https://s5.51cto.com/oss/202008/10/ec77a1438fc19579c5b97d2cfb08fdac.jpg-wh_173x112-s_3355047303.jpg'></a><p..." Line: 691 Column: 93 - 180
"...="_blank"><img src="https://s1.51ctocdn.cn/images/201905/09/b7116454c9a101da9cedfcd51d8ccd6e.jpg"></a><p..." Line: 711 Column: 103 - 213
"...='_blank'><img src='https://s3.51cto.com/oss/202008/10/020c48e7ef9a464d563c70f88946ab58.jpg-wh_173x112-s_4266355720.jpg'></a><p..." Line: 730 Column: 93 - 180
"...="_blank"><img src="https://s1.51ctocdn.cn/images/201904/19/c619763e37a044a3c76b1d2383a5ef77.jpg"></a><p..." Line: 752 Column: 108 - 220
"...='_blank'><img src='https://s4.51cto.com/oss/202008/10/6210653451a0049926374349a2c20c45.jpeg-wh_173x112-s_2008531814.jpeg'></a><p..." Line: 771 Column: 108 - 218
"...='_blank'><img src='https://s4.51cto.com/oss/202008/10/d31951afd316dd2ed024c6346094a665.png-wh_173x112-s_4196561593.png'></a><p..." Line: 790 Column: 103 - 213
"...='_blank'><img src='https://s3.51cto.com/oss/202008/10/8909aeb2ecbcc037a8d3352242058c95.jpg-wh_173x112-s_3603468118.jpg'></a><p..." Line: 809 Column: 105 - 217
"...='_blank'><img src='https://s5.51cto.com/oss/202008/10/9654acb2bbfb9ebb134b239cb9324492.jpeg-wh_173x112-s_1577856722.jpeg'></a><p..." Line: 828 Column: 103 - 213
"...='_blank'><img src='https://s3.51cto.com/oss/202008/10/e3056b616f10932adf27f675c2f4ad8d.jpg-wh_173x112-s_1547416395.jpg'></a><p..." Line: 847 Column: 101 - 213
"...='_blank'><img src='https://s2.51cto.com/oss/202008/10/8282ea6629abe487a0f3831c1ad753f6.jpeg-wh_173x112-s_1800991202.jpeg'></a><p..." Line: 866 Column: 103 - 214
"...='_blank'><img src='https://s2.51cto.com/oss/202008/10/6a953b682c21a671c79a8e2fa57e78ae.jpeg-wh_173x112-s_774609512.jpeg'></a><p..." Line: 885 Column: 106 - 216
"...='_blank'><img src='https://s2.51cto.com/oss/202008/10/f8179a8eb2b6b5e16054e323822477aa.jpg-wh_173x112-s_3604797192.jpg'></a><p..." Line: 904 Column: 103 - 212
"...='_blank'><img src='https://s5.51cto.com/oss/202008/10/b1cce4fcf6c0e34146d476f231326193.jpg-wh_173x112-s_154079397.jpg'></a><p..." Line: 923 Column: 108 - 220
"...='_blank'><img src='https://s4.51cto.com/oss/202008/10/40c3b0e0160697ed993925a953ba004c.jpeg-wh_173x112-s_1904845937.jpeg'></a><p..." Line: 942 Column: 99 - 208
"...='_blank'><img src='https://s5.51cto.com/oss/202008/10/8f6c97fb7c3f369797f06f8fdf587913.jpg-wh_173x112-s_278392510.jpg'></a><p..." Line: 961 Column: 102 - 212
"...='_blank'><img src='https://s1.51cto.com/oss/202008/10/2517b0f705eea44e3900309ea2a6c97e.jpeg-wh_173x112-s_32990082.jpeg'></a><p..." Line: 980 Column: 108 - 217
"...='_blank'><img src='https://s4.51cto.com/oss/202008/10/20525ef7b9b320db7bd54e0fe8e477e2.jpg-wh_173x112-s_666705100.jpg'></a><p..." Line: 999 Column: 101 - 211
"...='_blank'><img src='https://s4.51cto.com/oss/202008/10/ee7cba3e4bca2a12dbf44152b1abf68d.jpg-wh_173x112-s_2082818171.jpg'></a><p..." Line: 1018 Column: 106 - 218
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"...='_blank'><img src='https://s5.51cto.com/oss/202008/10/117f19701bb7dc57a49669609c52e622.jpg-wh_173x112-s_603930721.jpg'></a><p..." Line: 1056 Column: 102 - 214
"...='_blank'><img src='https://s4.51cto.com/oss/202008/10/dc1ec5cfb13ee660046d45480ae0d1df.jpeg-wh_173x112-s_1084385054.jpeg'></a><p..." Line: 1115 Column: 159 - 287
"...th:auto;"><img src="https://s5.51cto.com/oss/202008/07/45355091d63b9627485703122959aaf9.jpg" class="picw2" style="width:auto;height:78px;"></a> ..." Line: 1123 Column: 168 - 296
"...th:auto;"><img src="https://s1.51cto.com/oss/202007/10/6526740d0945da60bd7a2f672bbd3115.jpg" class="picw2" style="width:auto;height:78px;"></a> ..." Line: 1131 Column: 162 - 290
"...th:auto;"><img src="https://s3.51cto.com/oss/202007/07/3ad6aa226d7072b173089046c802330f.png" class="picw2" style="width:auto;height:78px;"></a> ..." Line: 1190 Column: 161 - 299
"...th:auto;"><img src="https://s4.51cto.com/images/blog/202006/30/60151f2f7c78859f5a96595f4fadbc61.jpg" class="picw2" style="width:111px;height:142px;"></a> ..." Line: 1310 Column: 33 - 128
"... <img src="https://s2.51cto.com/oss/202002/20/d1ff6eaf31f28c3579c16a331335b513.jpg" class="picw"></a> ..." Line: 1548 Column: 20 - 128
"... <img src="https://s1.51cto.com/oss/201908/30/605f82974a8433313e4215829fd30d70.jpg" width="100" height="100"/> ..." Line: 1552 Column: 19 - 128
"... <img src="https://s4.51cto.com/oss/201908/30/8c9ec1c2615773aceb5abfa93f794645.jpg" width="100" height="100" /> ..." Line: 1556 Column: 20 - 128
"... <img src="https://s2.51cto.com/oss/201803/02/f7b57554d22701f4042f8be0ca144782.jpg" width="100" height="100"/> ..." Line: 1629 Column: 73 - 156
"...="_blank"><img src="https://s7.51cto.com/wyfs02/M02/73/FD/wKiom1YLhe6Rz4cRAAAXp7l7roQ463.jpg"></a> ..." Line: 1630 Column: 133 - 216
"...blank"><img src="https://s6.51cto.com/wyfs02/M00/73/FA/wKioL1YLhfqzXuPxAAAWjtYhNDQ485.jpg"></a> ..."

Element “p” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)

Line: 117 Column: 30 - 32
"... <p>51CTO技..." Line: 121 Column: 31 - 33
"... <p>51CTO官..." Line: 125 Column: 31 - 33
"... <p>51CTO服..." Line: 129 Column: 31 - 33
"... <p>CIO进化论..." Line: 1549 Column: 20 - 22
"... <p>51CTO技..." Line: 1553 Column: 19 - 21
"... <p>51CTO官..." Line: 1557 Column: 20 - 22
"... <p>CIO进化论..."

Bad value “” for attribute “name” on element “input”: Must not be empty.

Line: 249 Column: 11 - 63
"... <input name="" type="submit" value="" class="sear-2"> </..."

Duplicate attribute “target”.

Line: 289 Column: - 80
"...to.com/" target="_blank">资讯</a..." Line: 290 Column: - 87
"...to.com/" target="_blank">安全</a..." Line: 291 Column: - 79
"...to.com/" target="_blank">办公</a..." Line: 295 Column: - 81
"...to.com/" target="_blank">云计算</..." Line: 296 Column: - 83
"...to.com/" target="_blank">大数据</..." Line: 297 Column: - 86
"...to.com/" target="_blank">区块链</..." Line: 301 Column: - 85
"...to.com/" target="_blank">开发</a..." Line: 302 Column: - 83
"...to.com/" target="_blank">网络</a..." Line: 303 Column: - 82
"...to.com/" target="_blank">移动</a..." Line: 306 Column: - 80
"...ge.com/" target="_blank">CIOAg..." Line: 307 Column: - 82
"...to.com/" target="_blank">服务器</..." Line: 308 Column: - 84
"...to.com/" target="_blank">数据库</..." Line: 311 Column: - 78
"...to.com/" target="_blank">AI</a..." Line: 312 Column: - 80
"...to.com/" target="_blank">存储</a..." Line: 313 Column: - 78
"...to.com/" target="_blank">系统</a..." Line: 327 Column: - 79
"...to.com/" target="_blank">物联网</..." Line: 328 Column: - 86
"...ol/610/" target="_blank">开源</a..." Line: 329 Column: - 95
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"...e/index" target="_blank">企业服务<..." Line: 334 Column: - 88
"...l/1736/" target="_blank">深度学习<..." Line: 335 Column: - 79
"...to.com/" target="_blank">中小企业<..." Line: 350 Column: - 85
"...to.com/" target="_blank">专栏</a..." Line: 352 Column: - 75
"...ex.html" target="_blank">大咖说</..." Line: 354 Column: - 80
"...to.com/" target="_blank">读书</a..." Line: 357 Column: - 66
".../huiyan" target="_blank">慧眼</a..." Line: 358 Column: - 93
"...erviews" target="_blank">匠心</a..." Line: 359 Column: - 68
"...ractice" target="_blank">足迹</a..." Line: 362 Column: - 92
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"..." target="_blank">软考</a> <a ta..." Line: 380 Column: - 288
"..." target="_blank">华为</a> <a ta..." Line: 381 Column: - 284
"..." target="_blank">PMP</a> </l..." Line: 384 Column: - 288
"..." target="_blank">Oracle</a> <..." Line: 385 Column: - 288
"..." target="_blank">红帽</a> <a ta..." Line: 386 Column: - 288
"..." target="_blank">微软</a> ..." Line: 1280 Column: - 117
"...="more1" target="_blank">新用户免费..."

Bad character “ ” after “<”. Probable cause: Unescaped “<”. Try escaping it as “&lt;”.

Line: 482 Column: - 40
"...ipt><noscript>< a href=' ' tar..." Line: 482 Column: - 69
"...rget='_blank'>< img src='//gg...."

Garbage after “</”.

Line: 482 Column: - 197
"...'0' alt='' /></ a></noscript> ..."

The “font” element is obsolete. Use CSS instead.

Line: 486 Column: 58 - 79
"...">精选专题</b><font color="#a4a4a4"> |</fo..."

Element “div” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)

Line: 532 Column: 14 - 39
"... <div class="morenav-list"> ..."

Duplicate ID “share”.

Line: 576 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 595 Column: 4 - 51
"...="fx"> <div class="fxlist bdsharebuttonbox" id="share"> <..." Line: 614 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 633 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 659 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 678 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 698 Column: 4 - 51
"...="fx"> <div class="fxlist bdsharebuttonbox" id="share"> <..." Line: 718 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 737 Column: 4 - 51
"...="fx"> <div class="fxlist bdsharebuttonbox" id="share"> <..." Line: 759 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 778 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 797 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 816 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 835 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 854 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 873 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 892 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 911 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 930 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 949 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 968 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 987 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 1006 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 1025 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 1044 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..." Line: 1063 Column: 21 - 68
"... <div class="fxlist bdsharebuttonbox" id="share"> ..."

Bad value “326px” for attribute “width” on element “img”: Expected a digit but saw “p” instead.

Line: 1284 Column: 205 - 390
"..."_blank"><img src="https://s1.51ctocdn.cn/images/202006/16/7999837fc51fb511e3c78c67b8fa6ee2.jpg?x-oss-process=image/resize,m_fixed,h_166,w_222" alt="" class="fm_max" width="326px" height="195px"><span c..."

Bad value “195px” for attribute “height” on element “img”: Expected a digit but saw “p” instead.

Line: 1284 Column: 205 - 390
"..."_blank"><img src="https://s1.51ctocdn.cn/images/202006/16/7999837fc51fb511e3c78c67b8fa6ee2.jpg?x-oss-process=image/resize,m_fixed,h_166,w_222" alt="" class="fm_max" width="326px" height="195px"><span c..."

Bad value “158px” for attribute “width” on element “img”: Expected a digit but saw “p” instead.

Line: 1284 Column: 1016 - 1199
"...blank"><img src="https://s11.51cto.com/images/202007/27/94bbd5a24ede09c710de0067cd99bef7.jpg?x-oss-process=image/resize,m_fixed,h_166,w_222" alt="" class="fm_min" width="158px" height="95px"><span cla..." Line: 1284 Column: 1788 - 1972
"...ank"><img src="https://s1.51ctocdn.cn/images/202006/09/4e64a622eba4a41fa7309611a0c6102c.jpg?x-oss-process=image/resize,m_fixed,h_166,w_222" alt="" class="fm_min" width="158px" height="95px"><span class..."

Bad value “95px” for attribute “height” on element “img”: Expected a digit but saw “p” instead.

Line: 1284 Column: 1016 - 1199
"...blank"><img src="https://s11.51cto.com/images/202007/27/94bbd5a24ede09c710de0067cd99bef7.jpg?x-oss-process=image/resize,m_fixed,h_166,w_222" alt="" class="fm_min" width="158px" height="95px"><span cla..." Line: 1284 Column: 1788 - 1972
"...ank"><img src="https://s1.51ctocdn.cn/images/202006/09/4e64a622eba4a41fa7309611a0c6102c.jpg?x-oss-process=image/resize,m_fixed,h_166,w_222" alt="" class="fm_min" width="158px" height="95px"><span class..."

Element “dl” is missing a required child element.

Line: 1400 Column: 17 - 20
"... <dd> ..."

No space between attributes.

Line: 1401 Column: - 100
"...target="_blank"style="color:#B..." Line: 1402 Column: - 95
"...target="_blank"style="color:#B..."

Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)

Line: 1637 Column: 1 - 23
"... </div> <style type="text/css"> ...."

Attribute “data” not allowed on element “span” at this point.

Line: 1721 Column: 2 - 28
"...y:none"> <span id="fx_text" data=""></span..." Line: 1722 Column: 2 - 27
"...></span> <span id="fx_url" data=""></span..." Line: 1723 Column: 2 - 27
"...></span> <span id="fx_pic" data=""></span..."

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51cto.com Ping

Ping is a computer network administration software utility used to test the reachability of a host on an Internet Protocol (IP) network. It measures the round-trip time for messages sent from the originating host to a destination computer that are echoed back to the source.


51cto.com TRACEROUTE

Traceroute is a computer network diagnostic tool for displaying the route (path) and measuring transit delays of packets across an Internet Protocol (IP) network. The history of the route is recorded as the round-trip times of the packets received from each successive host (remote node) in the route (path); the sum of the mean times in each hop is a measure of the total time spent to establish the connection. Traceroute proceeds unless all (three) sent packets are lost more than twice, then the connection is lost and the route cannot be evaluated.