代码高亮js

<script src="http://code.jquery.com/jquery.min.js"></script>
<textarea>
</textarea>
<pre></pre>
<button onclick="format()">Format</button>
<script>
function format()
{

var str=$("textarea").html();
var txt=str.replace(/".*?"/g,‘<span style="color:#cc9933;font-weight:bold">$&</span>‘);

txt=txt.replace(/using|namespace|struct|const|static|auto|for|return|while/g,‘<span style="color:#0033cc;font
-weight:bold">$&</span>‘);
txt=txt.replace(/double|\bint\b|float|bool/g,‘<span style="color:#9966cc;font-weight:bold">$&</span>‘);
txt=txt.replace(/#include\s*&lt;.*?&gt;/g,‘<span style="color:#cc3333">$&</span>‘);
$("pre").html(txt);
}
</script>

代码高亮js

原文：http://www.cnblogs.com/sky-view/p/3930630.html