微信 - 星级评分

https://blog.csdn.net/qq_35713752/article/details/78770260#commentBox

星级评分分成两种情况: 一:展示后台给的评分数据 二:用户点击第几颗星星就显示为几星评分;

<!--pages/test/test.wxml-->
<view>
<view>一:显示后台给的评分</view>
<block wx:for="{{one_1}}">
<image src='../../images/use_sc2.png'></image>
</block>
<block wx:for="{{two_1}}">
<image src='../../images/use_sc.png'></image>
</block>
</view>
<view>这里num给的是几分就显示几颗星星</view>

<view style='margin-top:60px;'>二:显示用户选择的评分</view>
<block wx:for="{{one_2}}" wx:key="index">
<image catchtap='in_xin' id='{{index+1}}' data-in='use_sc2' src='../../images/use_sc2.png'></image>
</block>
<block wx:for="{{two_2}}" wx:key="index">
<image catchtap='in_xin' id='{{index+1}}' data-in='use_sc' src='../../images/use_sc.png'></image>
</block>
<view>{{one_2}}星</view>

// pages/test/test.js
Page({
    /**
     * 统一满分为5星
     */
    data: {
        num: 4,//后端给的分数,显示相应的星星
        one_1: '',
        two_1: '',
        one_2: 0,
        two_2: 5
    },
    onLoad: function (options) {
        //情况一:展示后台给的评分
        this.setData({
            one_1: this.data.num,
            two_1: 5 - this.data.num
        })
    },

    //情况二:用户给评分
    in_xin: function (e) {
        var in_xin = e.currentTarget.dataset.in;
        var one_2;
        if (in_xin === 'use_sc2') {
            one_2 = Number(e.currentTarget.id);
        } else {
            one_2 = Number(e.currentTarget.id) + this.data.one_2;
        }
        this.setData({
            one_2: one_2,
            two_2: 5 - one_2
        })
    }
})