用反项预查即可。。
<textarea id="wc">
<div>
<p>cs</p>
<param />
<pre></pre>
</div>
</textarea>
<script type="text/javascript">
window.onload = function () {
var wc = document.getElementById("wc").value
var pat = /<(?!\/?p[\s>])(?:"[^"]*"|'[^']*'|[^>'"]*)+>/ig;
alert(wc.replace(pat, ""));
}
</script>
<textarea id="wc">
<div>
<p>cs</p>
<param />
<pre></pre>
</div>
</textarea>
<script type="text/javascript">
window.onload = function () {
var wc = document.getElementById("wc").value
var pat = /<(?!\/?p[\s>])(?:"[^"]*"|'[^']*'|[^>'"]*)+>/ig;
alert(wc.replace(pat, ""));
}
</script>
解决方案 »
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