微信小程序，格式化千分位并保留两位小数

1、新建utils.wxs

//逢三位转逗号,保留两位小数，支持负数
var threeNumForTwo = {money_three_for_two_thousands: function(num) {//num = parseInt(num);var num = num + '';var d = '';if (num.slice(0, 1) == '-'){d = num.slice(0, 1);num = num.slice(1);}var len = num.length;var index = num.indexOf('.');if (index == -1) {num = num + '.00';} else if ((index + 2) == len) {num = num + '0';}var index = num.indexOf('.'); // 字符出现的位置var num2 = num.slice(-3);num = num.slice(0,index)var result = '';while (num.length > 3) {result = ',' + num.slice(-3) + result;num = num.slice(0, num.length - 3);}if (num) {result = num + result;}return d + (result + num2);}
}module.exports = {money_three_for_two_thousands: threeNumForTwo.money_three_for_two_thousands //暴露接口调用
}

2、在使用的wxml引入，部分wxml代码

<wxs module="threeNumForTwo" src="../../utils/util.wxs"></wxs>
<include src="/commons/navbar/navbar" />
<view class="after-navber"><view class="zr"><view class='user_box' hidden="{{isShowInfo}}"><view class='user-info'><view class='user-box'><view class='avatar'><image src="{{avatar_url ? avatar_url : '../../images/icon-user-default-header.png'}}"></image></view><view class='user-name'><block wx:if="{{user_center}}"><view><text>{{user_center.FRealName || ''}}</text><text>({{user_center.FUserName || ''}})</text></view><view class="total-funds">资金总额：￥{{threeNumForTwo.money_three_for_two_thousands(user_center.FTotalFunds) || 0.00}}</view></block><!-- <block wx:else><text class="user-logo-box" bindtap="login">登录/注册</text></block> --></view></view></view></view>

3、使用

{{threeNumForTwo.money_three_for_two_thousands(user_center.FTotalFunds) || 0.00}}

微信商户。