求助,关于js中的字符替换

Question

try
--------------------------------------------
function correctUrl(cont)
{
cont = cont.replace(/</g,"&lt;");
cont = cont.replace(/>/g,"&gt;");
}

Answer 1

while(cont.indexOf("<" > 0 || cont.indexOf(">") > 0)
{cont = cont.replace("<","&lt;");
cont = cont.replace(">","&gt;");
}

Answer 2

<script language="javascript">
function correctUrl(cont)
{
cont = cont.replace(/</g,"&lt;");
cont = cont.replace(/>/g,"&gt;");
return cont;
}alert(correctUrl("<font color=red>红色</font>"));
</script>