Component 构造器

Component({
  behaviors: [],

  properties: {
    myProperty: {
      // Type (required), currently accepted types include: String, Number, Boolean, Object, Array, null (indicating any type)
      type: String,

      // The initial value of the attribute (optional), if not specified, one will be selected according to the type
      value: '',

      // The function (optional) executed when the property is changed can also be written as the method name string defined in the methods section, such as:'_myPropertyChange'
      observer: function(newVal, oldVal) {
         // Usually newVal is the newly set data, oldVal is the old data
      }
    },
    myPropertyB: String // Simplified definition
  },

  // Private data, can be used for template rendering
  data: {},

  // Life cycle function, which can be a function or a method name defined in the methods section
  attached: function () {
    this.selectComponent('.class-name', function(res) {
      console.log(res)
    })

    //
  },
  ready: function() { },

  lifetimes: {
  	//  Support all life cycles
    attached() {},
    // ....
  },

  // Component custom method
  methods: {
    onMyButtonTap: function(){
      this.setData({ ... })
    },

    _myPrivateMethod: function(){
      // set data.A[0].B to'test'
      this.setData({
        'A[0].B': 'test'
      })
    },

    _myPropertyChange: function(newVal, oldVal) {

    }
  }
})

{
  "usingComponents": {}
}

Component({
  properties: {
    paramA: Number,
    paramB: String,
  },

  methods: {
    onLoad() {
      this.data.paramA; // Page parameter paramA value
      this.data.paramB; // Page parameter paramB value
    },
  },
});