复制代码 代码如下:

<script>
function subString(str, len, hasDot)
{
var newLength = 0;
var newStr = \"\";
var chineseRegex = /[^\\x00-\\xff]/g;
var singleChar = \"\";
var strLength = str.replace(chineseRegex,\"**\").length;
for(var i = 0;i < strLength;i++){
singleChar = str.charAt(i).toString();
if(singleChar.match(chineseRegex) != null){
newLength += 2;
}else{
newLength++;
}
if(newLength > len){
break;
}
newStr += singleChar;
}

if(hasDot && strLength > len){
newStr += \"...\";
}
return newStr;
}
alert(subString(\"js截取中英文字符串无乱码\",10,true));
</script>