汽车在用数字文本框中添加逗号（，） [英] Auto add comma (,) in text-box with numbers

问题描述

我现在的编码加逗号（，）当有4个或多个数字。但不是
1101 = 1,101我的code是这样做的
1101 = 110,1 ...我希望它格式化，并把逗号前面。我的javascript

My current coding adds comma (,) when there are 4 or more digits. But instead of 1101 = 1,101 my code is doing this 1101 = 110,1... I want it to format and bring the comma to the front. My javascript

<script language="javascript" type="text/javascript">   
    function AddComma(txt) {
        if (txt.value.length % 4 == 3) {
            txt.value += ",";
        }
    }
</script>


<asp:TextBox ID="TextBox3" onkeypress="AddComma(this)" runat="server"></asp:TextBox>

我如何格式化所以逗号在前面1,101或10,101或100,101。

How do i format so the comma is in the front 1,101 or 10,101 or 100,101.

推荐答案

试试这个code

function Comma(Num) { //function to add commas to textboxes
        Num += '';
        Num = Num.replace(',', ''); Num = Num.replace(',', ''); Num = Num.replace(',', '');
        Num = Num.replace(',', ''); Num = Num.replace(',', ''); Num = Num.replace(',', '');
        x = Num.split('.');
        x1 = x[0];
        x2 = x.length > 1 ? '.' + x[1] : '';
        var rgx = /(\d+)(\d{3})/;
        while (rgx.test(x1))
            x1 = x1.replace(rgx, '$1' + ',' + '$2');
        return x1 + x2;
    }


<asp:TextBox ID="TextBox3" runat="server"  onkeyup = "javascript:this.value=Comma(this.value);" />

希望这有助于你。

Hope this helps you.

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