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<html>
<head>
<title>測試輸入字元</title>
<script language=javascript>
String.prototype.lenB =function(){
return this.replace(/[^/x00-/xff]/g,"**").length;
}
function a(){
var str=document.getElementById("content").value;
if(str.length <= 180){
abc.innerText="您已經輸入"+str.length+"/180個字（每條簡訊最多70個字，超過分多條發送）";
}else{
abc.innerText="最多隻允許輸入180個字。"
}
}
</script>
</head>
<body>
<textarea onpropertychange="if(value.length>80) value=value.substr(0,80)" id="content" onkeyup="a();"></textarea>
<input maxlength="5"/>
<p id="abc"></p>
</body>
</h tml>
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