JS judgment character length, Chinese and English numbers, etc.

Core function:

Copy code code as follows:

<script type = "text/javascript">

var ZFL = {};

zfl.getLength = Function (STR) {

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;

}

</script>

Use examples:

Copy code code as follows:

<script type = "text/javascript">

Alert (zfl.getlength ("China 123ZKRLJL");

</script>

The effect is shown in the figure: