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<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>test</title>
</head>
<body>
<script src="/test.js" type="text/javascript"></script>
<form name="form1" method="post" action="index.php">
<table >
<tr>
<td >语言1:</td>
<td >
<input text="source1" value="English"/>
</td>
</tr>
<tr>
<td >语言2:</td>
<td >
<input text="source2" value="Chinese"/>
</td>
</tr>
<tr>
<td class="label"> </td>
<td class="field">
<div id="remand">
你已输入
<input id=numOfword name=numOfword type=text value="0" size=5 maxlength=5 readonly>
字
</div>
</td>
</tr>
<tr>
<td class="label">内容:</td>
<td class="field"><textarea name="content" cols="40" rows="20" onkeyup="textCounter(this.form.content,this.form.numOfword);" id="content"></textarea></td>
</tr>
<tr>
<td class="field" align="center" colspan="2">
<div class="control">
<input type="submit" value='submit'></input>
</div>
</td>
</tr>
</table>
</form>
</body>
</html>
function textCounter(theField,theCharCounter)
{
var strTemp = "";
var reg = "";
var osel1 = document.getElementById("source1");
if(osel1.value=='Chinese'){
reg=/[\u4E00-\u9FA5]/g;
}else if(osel1.value=='English'){
reg=/[a-zA-Z]/g;
}else{
reg="~!@#$%^&*()_+|`-=\{}[]:\";\<>?,./";
}
//这里打印的都是 reg=/[a-zA-Z]/g;
var strCharCounter0 = 0;
for (var i=0; i < theField.value.length ; i++)
{
var strChar = theField.value.substring(i, i + 1);
//alert("loop:"+ theField.value.length+ "strChar:"+strChar);//这里只要一输入一个字母, 就不停的弹出这个对话框。
if(reg.test(strChar)){
strCharCounter0 = strCharCounter0+1;
}else{
//alert("no");
}
}
theCharCounter.value = strCharCounter0;
}
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>test</title>
</head>
<body>
<script type="text/javascript">
function $(id){
return document.getElementById(id);
}
function textCounter(theField,theCharCounter)
{
var strTemp = "";
var reg = "";
var osel1 = document.getElementById("source1");
if(osel1.value=='Chinese'){
reg=/[\u4E00-\u9FA5]/;
}else if(osel1.value=='English'){
reg=/[a-zA-Z]/;
}else{
reg="~!@#$%^&*()_+|`-=\{}[]:\";\<>?,./";
}
//这里打印的都是 reg=/[a-zA-Z]/g;
var strCharCounter0 = 0;
for (var i=0; i < theField.value.length ; i++)
{
var strChar = theField.value.substring(i, i + 1);
//alert("loop:"+ theField.value.length+ "strChar:"+strChar);//这里只要一输入一个字母, 就不停的弹出这个对话框。
if(reg.test(strChar)){
strCharCounter0 = strCharCounter0+1;
}else{
//alert("no");
}
}
theCharCounter.value = strCharCounter0;
}
</script>
<form name="form1" method="post" action="index.php">
<table >
<tr>
<td >语言1:</td>
<td >
<input text="source1" id="source1" value="English"/>
</td>
</tr>
<tr>
<td >语言2:</td>
<td >
<input text="source2" value="Chinese"/>
</td>
</tr>
<tr>
<td class="label"> </td>
<td class="field">
<div id="remand">
你已输入
<input id=numOfword name=numOfword type=text value="0" size=5 maxlength=5 readonly>
字
</div>
</td>
</tr>
<tr>
<td class="label">内容:</td>
<td class="field"><textarea name="content" cols="40" rows="20" onkeyup="textCounter($('content'),$('numOfword'));" id="content"></textarea></td>
</tr>
<tr>
<td class="field" align="center" colspan="2">
<div class="control">
<input type="submit" value='submit'></input>
</div>
</td>
</tr>
</table>
</form>
</body>
</html>