js获取字符串实际长度,js精确获取字符串长度(效果图)

var jmz = {};
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>
    var realLength = 0, len = str.length, charCode = -1;
    for (var i = 0; i < len; i++) {
        charCode = str.charCodeAt(i);
        if (charCode >= 0 && charCode <= 128) realLength += 1;
        else realLength += 2;
    } // www.jb200.com
    return realLength;
};

function getStrLength(str) {
var cArr = str.match(/[^x00-xff]/ig);
return str.length + (cArr == null ? 0 : cArr.length);
}