转自；/zhoujianying/p/8118385.html
方法一：
varjmz = {};jmz.GetLength =function(str) {///<summary>获得字符串实际长度，中文2，英文1</summary>///<param name="str">要获得长度的字符串</param>varrealLength = 0, len = str.length, charCode = -1;for(vari = 0; i < len; i++) {charCode = str.charCodeAt(i);if(charCode >= 0 && charCode <= 128)realLength += 1;elserealLength += 2;}returnrealLength;};alert(jmz.GetLength('测试测试ceshiceshi));方法二：varl = str.length;varblen = 0;for(i=0; i<l; i++) {if((str.charCodeAt(i) & 0xff00) != 0) {blen ++;}blen ++;}方法三：varjmz = {};jmz.GetLength =function(str) {returnstr.replace(/[\u0391-\uFFE5]/g,"aa").length;//先把中文替换成两个字节的英文，在计算长度};alert(jmz.GetLength('测试测试ceshiceshi'));分类:js
