javascript - 在计算结果中添加逗号分隔符

Question

如何在计算结果中显示逗号分隔符？(123456789 显示为 123,456,789)

function calculate(){
a=Number(document.calculator.number1.value);
b=Number(document.calculator.number2.value);

A1=a*2000
document.calculator.totalA1.value=A1;
A2=a*b*240
document.calculator.totalA2.value=A2;
A3=a*8*240
document.calculator.totalA3.value=A3;
A4=a*960*5
document.calculator.totalA4.value=A4;
A5=a*3600*5
document.calculator.totalA5.value=A5;
A6=a*3000
document.calculator.totalA6.value=A6;
A7=A1+A2+A3+A4+A5+A6
document.calculator.totalA7.value=A7;
A8=a*120000
document.calculator.totalA8.value=A8;
A9=A8-A7
document.calculator.totalA9.value=A9;
}

我看到了很多建议，但不知道在哪里插入脚本。谢谢!

Answer 1

您可以使用 RegExp 尝试类似的操作

$("#button").click(function(){
  var a = 100;
  var A1=(a*2000);
  alert(String(A1).replace(/(\d{3})(?!$)/g, "$1,"));
})

<script src="https://code.jquery.com/jquery-1.12.3.min.js"></script>
<button type="button" id="button">Calculate </button>