@chenng/aop-js
v1.0.0
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Function Decorator
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aop-js
Function Decorator。
《JavaScript 设计模式与开发实践》中装饰者模式给出的例子。
使用
yarn add @chenng/aop-js
import '@chenng/aop-js';
例子
分离非业务代码
let showLogin = function() {
console.log('打开登陆浮层');
}
let log = function() {
console.log(`上报标签为:${this.getAttribute('tag')}`);
}
showLogin = showLogin.after(log); // 打开浮层上报数据
document.getElementById('button').onclick = showLogin;
动态改变函数参数
let ajax = function(type, url, params) {
console.log(params);
}
ajax = ajax.before((type, url, params) => {
params.Token = 'Token';
});
ajax('get', 'https://xxx.com/userinfo', {name: 'chenng'}); // {name: 'chenng', Token: 'Token'}
表单校验
const validata = function() {
if (username.value === '') {
alert('查询用户不能为空');
return false;
}
}
const formSubmit = function() {
const param = {
username: username.value
}
ajax('https://xxx.com/getUserInfo', param);
}
formSubmit = formSubmit.before(validata);