huiting/miniprogram/components/myButton/myButton.js

// components/myButton/myButton.js
Component({
  options: {
    styleIsolation: 'apply-shared'
  },

  behaviors: ['wx://form-field-button'],

  /**
   * 组件的属性列表
   */
  properties: {
    type: String,
    size: String
  },

  lifetimes: {
    attached: function () {
      if (this.data.type !== 'default' && this.data.type !== 'primary') {
        this.setData({
          type: 'default'
        })
      }
      if (this.data.size !== 'default' && this.data.type !== 'large') {
        this.setData({
          size: 'default'
        })
      }
    }
  },

  /**
   * 组件的初始数据
   */
  data: {

  },

  /**
   * 组件的方法列表
   */
  methods: {
    handleTap: function () {
      this.triggerEvent('tap');
    }
  }
})