为什么要拆分 <script>用 document.write() 编写时标记?

Why split the lt;scriptgt; tag when writing it with document.write()?(为什么要拆分 lt;scriptgt;用 document.write() 编写时标记?)

问题描述

为什么某些网站(或向客户提供 javascript 代码的广告商)采用将 <script> 和/或 </script> 标记拆分的技术在 document.write() 调用中?

Why do some sites (or advertisers that give clients javascript code) employ a technique of splitting the <script> and/or </script> tags up within document.write() calls?

我注意到亚马逊也这样做，例如:

I noticed that Amazon does this as well, for example:

<script type='text/javascript'>
  if (typeof window['jQuery'] == 'undefined') document.write('<scr'+'ipt type="text/javascript" src="aHR0cDovL3otZWN4LmltYWdlcy1hbWF6b24uY29tL2ltYWdlcy9HLzAxL2phdmFzY3JpcHRzL2xpYi9qcXVlcnkvanF1ZXJ5LTEuMi42LnBhY2suX1YyNjUxMTM1NjdfLmpz"></sc'+'ript>');
</script>

推荐答案

</script> 必须分解，否则会结束封闭的