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Vue custom filter formats three digits plus a comma implementation code

亚连

May 26, 2018 pm 03:27 PM

formatcustomizefilter

这篇文章主要介绍了Vue自定义过滤器格式化数字三位加一逗号的实现代码,需要的朋友可以参考下

前端处理一些金额，数字类的数据要求按照固定的格式显示，比如9,527,025，或者带有小数（如1,587.23）仍要三位一断。有些话也不必多说，既然要求如此，实现呗。

作为前端主流框架之一的Vue，类似的功能肯定都有人写的很完善了。我呢，最讨厌不动脑筋去网上找现成的，所以我自己写了一个。话不多说，先放效果图再贴代码(为了展现思路，我面向过程写的，另外这个是针对保留两位小数的数字进行过滤，因为保留整数的太简单了)。

<!DOCTYPE html>
<html>
 <head>
  <meta charset="UTF-8">
  <meta http-equiv="Content-Type" content="text/html">
  <title>Vue数字过滤器逢三一断</title>
 </head>
 <body>
  <p id="app">
   <h4 id="说明-这个版本是针对保留两位小数的浮点数进行过滤格式化的">说明：这个版本是针对保留两位小数的浮点数进行过滤格式化的</h4>
   <input type="number" v-model="num" />
   <p>{{num|NumFormat}}</p>
  </p>
 </body>
 <script type="text/javascript" src="vue.js"></script>
 <script>
  Vue.filter(&#39;NumFormat&#39;, function(value) {
   if(!value) return &#39;0.00&#39;;
   var intPart = Number(value).toFixed(0); //获取整数部分
   var intPartFormat = intPart.toString().replace(/(\d)(?=(?:\d{3})+$)/g, &#39;$1,&#39;); //将整数部分逢三一断
   var floatPart = ".00"; //预定义小数部分
   var value2Array = value.split(".");
   //=2表示数据有小数位
   if(value2Array.length == 2) {
    floatPart = value2Array[1].toString(); //拿到小数部分
    if(floatPart.length == 1) { //补0,实际上用不着
     return intPartFormat + "." + floatPart + &#39;0&#39;;
    } else {
     return intPartFormat + "." + floatPart;
    }
   } else {
    return intPartFormat + floatPart;
   }
  })
  var app = new Vue({
   el: "#app",
   data: {
    num: 0
   },
  })
 </script>
</html>

上面是我整理给大家的，希望今后会对大家有帮助。

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