一道JS面试题，求解解决办法

一道JS面试题，求解
将下面的引号替换

HTML code

<div class="outer" style="border:#ff0000 2px dotted; height:100px; width:100px; background-color:#999999;">

HTML code

<div class=<span class="red">"outer"</span> style=<span class="red">"border:#ff0000 2px dotted; height:100px; width:100px; background-color:#999999;"</span>>

JScript code

var str='<div class="outer" style="border:#ff0000 2px dotted; height:100px; width:100px; background-color:#999999;"> ';alert(str.replace(/(\"[^"]*\")/g,"<span class=\"red\">$1</span>"));
[解决办法]
楼上 可行