<script>
/* 2007-11-28 XuJian */
//截取字符串 包含中文處理
//(串,長度,增加...)
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("字符串截取測試 www.systn.com 是一個PHP開發學習的網站",10));
</script>

轉載于:https://www.cnblogs.com/goody9807/archive/2009/08/24/1553040.html

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