js:

data: {

    stars: {

      stars: [1,1,1,0,0],

    },

  },

  onLoad: function (options) {

  },

  changeBoolen: function (e) {

    var num  = (e.currentTarget.dataset.index+1)*10;

    this.setData({

      stars:util.convertToStarsArray(num),

      score:num

    })

  }

wxml:

<block wx:for="{{stars}}" wx:for-item='i' >

        <image wx:if='{{i}}' data-index='{{index}}' src='/images/icon/star.png' catchtap='changeBoolen' />

        <image wx:else data-index='{{index}}' src="/images/icon/none-star.png" catchtap='changeBoolen' />