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function getStrLength(str) {   

    var cArr = str.match(/[^\x00-\xff]/ig);   

    return str.length + (cArr == null ? 0 : cArr.length);   

}

 

 

var jmz = {};
jmz.GetLength = function(str) {
    ///<summary>獲得字符串實際長度，中文2，英文1</summary>
    ///<param name="str">要獲得長度的字符串</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;
    }
    return realLength;
};