<NOscrip去掉t>. .
<a herf=http://***.com style="color:#FFFFFF;font-size:1px;line-height:1px;"> black link</a>
</NOscrip去掉t>. .
Black chain code 1. The link color is the same as the background color, and the link text is less than or equal to 1 pixel.
<a herf=http://***.com style="color:#FFFFFF;font-size:1px;line-height:1px;"> black link</a>
This situation is very common in some forum posts, when the forum does not allow anchor text links, some webmasters like to do it in the post, so that if you don't pay attention, you can't see it, just like a chameleon, completely the same color as the background. Of course, you can also write the black chain code separately.
<a herf=http://***.com style="color:#FFFFFF;"> black link</a>
<a herf=http://***.com style="font-size:1px;"> black link</a>
<a herf=http://***.com style="line-height:1px;"> black link</a>
For this kind of black chain code writing, I recommend not using it, the font color is white, and the font pixel is 1, which is likely to be recognized by search engines.
Black link code 2. The link is outside the visible range of the web page. There are two ways to write this black chain code, which are as follows.
<div style=”position: absolute; top: -999px;left: -999px;”>
<a href=http://***.com > black link</a></div>
The same is true for the following CSS black chain code.
<div style=”position:absolute;left:expression_r(1-900);top:expression_r(3-999);”>
<a href=http://***.com > black link</a></div>
Black chain code 3. The link flashes quickly in the form of a marquee. People who sell black links basically use this method to quickly flash your link. However, there is a problem that it will appear in some browsers. Fortunately, the vast majority of Chinese people use the old antique browser IE6, which is really lucky.
<marquee height=1 width=5 scrollamount=3000 scrolldelay=20000>
<a href=http://***.com > black link</a></marquee>
Black chain code 4. Display through CSS style control layer. This black link writing is overused for SEO cheating, and search engines are sensitive to it.
<div style=”display:none;”>
<a href=http://***.com> black link</a></div>
Black chain code 5. JS code control link display. I can't tell you whether this kind of black chain code is scientific or not, but I know that search engines are a bit unwilling to buy JS code.
<scrip remove t language="javascrip remove t" type="text/javascrip remove t">document.write("<div style='display:none;'>"); </scrip去掉t><div>. .
<a href=http://***.com > black link</a>
<scrip remove t language="javascrip remove t" type="text/javascrip remove t">document.write("</div>"); </scrip去掉t>. .
Black chain code 6. Advanced compound form.
<div id="linksID"><a href="http://***.com"> black link</a></div>
<scrip去掉t>document.getElementById("linksID").style.display="none"</scrip去掉t>
Black chain code 7. JS call marquee flashes. This is a combination of marquee black chain code and JS.
<scrip remove t language="javascrip remove t" type="text/javascrip remove t">document.write("<marquee scrollAmount=5000 width='1′ height='5′>"); </scrip去掉t>. .
<a href="http://***.com" > black link</a>
<scrip remove t language="javascrip remove t" type="text/javascrip remove t">document.write("</marquee>"); </scrip去掉t>. .
Black chain code 8. Advanced hidden layer.
<div style=”position:relative”>
<div style="position:absolute;left:0;top:0;z-index:999;width:90%;height:100px;border:1px solid #333;background:#eee"> occlusion layer</div>
<div>Hide content</div>
</div>
This is even more complicated, hehe, I believe that people who hang black chains are not willing to do this.
Black chain code 9. Replace anchor text links.
As shown below, the original code is
<a href="http://www.163.com/" > included on the website</a>
We just need to modify it to
<a href="http://***.com" > included on the website</a>
Of course, this purpose can only improve the PR value, and it will not have much effect on improving the ranking of your website keywords.
If you really don't care about keyword rankings, just for PR, then you can hang an open link and do it inconspicuously, such as linking to him where there is no hyperlink, or making your hyperlink to a punctuation mark. These completely need to use the brain.
There are so many black chain codes, which is the best way to write black chain code. I now give some advice to my friends. Contains display:none; The black chain code has been used and the black chain code that uses JS is not used, then the only thing left is the marquee and the display outside the visible range of these two options, at least the deity thinks so, this is not authority, everyone decides for themselves.
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Posted on 4/10/2015 11:17:33 PM
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