<view>
 <view>一:顯示后臺(tái)給的評(píng)分</view>
 <block wx:for="{{one_1}}" wx:key="item">
 <image src='../../image/star.png'></image>
 </block>
 <block wx:for="{{two_1}}" wx:key="item">
 <image src='../../image/starg.png'></image>
 </block>
</view>
<view>這里num給的是幾分就顯示幾顆星星</view>
 
<view style='margin-top:60px;'>二:顯示用戶選擇的評(píng)分</view>
<block wx:for="{{one_2}}" wx:key="index">
 <image catchtap='in_xin' id='{{index+1}}' data-in='star' src='../../image/star.png'></image>
</block>
<block wx:for="{{two_2}}" wx:key="index">
 <image catchtap='in_xin' id='{{index+1}}' data-in='starg' src='../../image/starg.png'></image>
</block>
<view>{{one_2}}星</view>

image{ 
 height: 60rpx; 
 width: 60rpx; 
 display: inline-block 
} 

/**
 * 頁(yè)面的初始數(shù)據(jù)
 * 滿分為5星
 */
 data: {
 num: 4,//后端給的分?jǐn)?shù)，顯示的星星
 one_1: '',//點(diǎn)亮的星星數(shù)
 two_1: '',//沒有點(diǎn)亮的星星數(shù)
 one_2: 0,//點(diǎn)亮的星星數(shù)
 two_2: 5//沒有點(diǎn)亮的星星數(shù)
 },
 
 /**
 * 生命周期函數(shù)--監(jiān)聽頁(yè)面加載
 */
 onLoad: function (options) {
 //情況一:展示后臺(tái)給的評(píng)分 
 this.setData({
 one_1: this.data.num,
 two_1: 5 - this.data.num
 })
 },
 in_xin: function (e) {
 var in_xin = e.currentTarget.dataset.in;
 console.log(e.currentTarget.dataset.in);
 console.log(e.currentTarget); 
 var one_2;
 if (in_xin == 'star') {
 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
 })
 },