<input type=text name=txt>
<input type=button value=ok onclick="cc()">
<script language=javascript>
function cc()
{
var j = 0;
var s = document.all.txt.value;
if (s=="")return;
if (/[^\x00-\xff]/g.test(s)) alert("含有汉字");
else alert("全是字符");
for (var i=0; i<s.length; i++)
{
if (s.charCodeAt(i) > 255) j = j + 2;
else j++
}
alert("字符数:"+j);
}
</script>—————————————————————————————————
想要游泳的“猪”
<input type=button value=ok onclick="cc()">
<script language=javascript>
function cc()
{
var j = 0;
var s = document.all.txt.value;
if (s=="")return;
if (/[^\x00-\xff]/g.test(s)) alert("含有汉字");
else alert("全是字符");
for (var i=0; i<s.length; i++)
{
if (s.charCodeAt(i) > 255) j = j + 2;
else j++
}
alert("字符数:"+j);
}
</script>—————————————————————————————————
想要游泳的“猪”
<input type=button value=ok onclick="cc(document.all.txt.value)">
<script language=javascript>
function cc(s){
alert("字符数:"+s.replace(/[^\x00-\xff]/g,"**").length);
}
</script>