JS get the actual length of the string (including Chinese characters) Simple method _javascript Tips

Method One:

var jmz = {};
Jmz. GetLength = function (str) {
  ///<summary> gets the actual length of the string, Chinese 2, English 1</summary>
  ///<param name= "str" > to get the length of the string </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;
};

Alert (JMZ. GetLength (' Test test Ceshiceshi ');

Method Two (more concise method):

var L = str.length;
var blen = 0;
For (i=0 i<l; i++) {
if (str.charcodeat (i) & 0xff00)!= 0) {
Blen + +;
}
Blen + +;
}

Method Three (more concise method):

var jmz = {};
Jmz. GetLength = function (str) {return
  str.replace (/[\u0391-\uffe5]/g, "AA"). Length;  First replace Chinese with two bytes in English, in the calculation of length
};  
Alert (JMZ. GetLength (' Test test Ceshiceshi '));

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