为什么我点击之后出现报错

// components/like.js
Component({
/**

• 组件的属性列表
  */
  properties: {
  like: {
  type: Boolean
  },
  count: {
  type: Number
  }
  },

/**

• 组件的初始数据
  */
  data: {
  like: true,
  count: 9,
  like1: ‘/components/ly4.png’,
  like2: ‘/components/ly3.png’

}
/**

• 组件的方法列表
  */
  methods: {
  onLike: function(e) {
  let like = this.properties.like
  let count = this.properties.count
  count = like?count-1:count+1
  this.SetData({
  count: count,
  like:!like

  })

}

}
})