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正則表示式之過濾html標籤

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>無標題文件</title>
<script>
window.onload=function(){
var oTxt1=document.getElementById('txt1');
var oBtn=document.getElementById('btn1');
var oTxt2=document.getElementById('txt2');

oBtn.onclick=function(){

//正則表示式

var re=/<[^<>]+>/g;

//替換
oTxt2.value=oTxt1.value.replace(re,'');


}

}




</script>
</head>


<body>
<textarea id="txt1" rows="10" cols="40"></textarea><br />
<input type="button" id="btn1" value="轉換" /><br />
<textarea id="txt2" rows="10" cols="40"></textarea>




</body>
</html>