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@mini-dev/hook

v0.2.0

Published

miniapp lifecycle hook

Downloads

8

Readme

微信小程序 Hook

拦截并增强小程序组件(App, Page, Component)的 Option 方法。

Usage

开启微信小程序的 npm 支持: https://developers.weixin.qq.com/miniprogram/dev/devtools/npm.html

    npm install @mini-dev/hook

配置钩子

由于 App,Page 等方法是框架提供的,最好是不要覆盖框架的方法,指不定那天就出问题了。

建议使用包装的方式创建新的构造函数。一个示例如下:

app.new.js

const { _App, _Page, _Component} = require('@mini-dev/hook');
_App.use({
    onLaunch(host) { //host is App
        return {
            before(options) {
                console.log('App.onLaunch...... before 1', options);
            },
            afterReturn(res, options) {
                console.log('App.onLaunch...... afterReturn 1', options);
            }
        };
    }
})

_Page.use({
    onLoad(host) { //host is page
        return {
            before(query) {
                console.log(this.route, 'Page.onLoad...... before', this.data, query);
            }
        };
    }
});

_Component.use({
    'methods.onTap': function (host) { //host is Component
      return {
          before(e) {
              wx.showModal({
                  content: 'newComponent.onTap'
              });
          }
      }
    }
});

app.js

import {_App as App} from './app.new';
App({
    onLaunch () {
    }
})

如果你的小程序原本就已经包装了 App, Page 等框架方法,那么也可以创建自定义的包装器,以 App 为例:

app.new.js

import OldApp from './App.old';
const { _App } = require('@mini-dev/hook');
const newApp = _App.create(OldApp); // OldApp 是你自定义的App包装函数
newApp.use({
    onLaunch() {
        return {
            before(option) {
                console.log('App.onLaunch...... before 1', this.data, option);
            }
        };
    }
})
export default newApp;

app.js

import {_App as App} from './app.new';
App({
    onLaunch () {
    }
})

pages/sample/index.js

import {_Page as Page} from './page.new';
Page({
    onLoad () {
    }
})

ChangeLogs

0.2.0

  1. 修正示例代码。