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Textarea and lazy rendering implementation code_javascript skills

WBOY
Release: 2016-05-16 17:57:44
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The code is as follows.

Copy code The code is as follows:


Render content immediately

  • Zhang San

  • Zhang Si






<script> <br>setTimeout(function(){//Lazy rendering <br>var el =document.getElementById('lazyRender01'); <br>el.parentNode.innerHTML = el.value; <br>},1000); <br></script>

The advantage of the code is that the content corresponding to Li San and Li Si will not form a dom node and will not request images before lazy rendering.
But some students will ask: "The content in Textarea is not friendly to search engines."
No problem, this is easy to solve:
Copy code The code is as follows:


Render content immediately

  • Zhang San

  • Zhang Si

  • < /ul>


<script>document.write('<textarea id="lazyRender01" style="display:none">'); </script>
Lazy rendering of content

  • 李三

  • < li>李思



< ;script>
setTimeout(function(){//Lazy rendering
var el =document.getElementById('lazyRender01');
el.parentNode.innerHTML = el.value;
},1000 ;
But the result is very different: even if the browser does not support js, all content can still be displayed as is.
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