JS about character length limit questions Example discussion

Copy code code as follows:

var fun = function (str) {

var preg = new regexp ("[/u4e00-/u9fa5]+", "gi");

Var Preg2 = New Regexp ("[^/U4E00-/U9Fa5]", "gi"); "gi");

var count = 0;

for (var I = 0; I <str.Length; i ++) {

if (preg.test (str [i])) {

count = count+2;

} Else {

count = count+1;

}

}

Return Count;

}