proxy是es6里面标准化构造对象拦截器的类
使用方法
new Proxy(target, handler)
基本用法
let data = {
name: 'jack',
age: 20
}
let handler = {
get: function(target, key, proxy){
const today = new Date();
console.log(`GET request made for ${key} at ${today}`);
return Reflect.get(target, key, proxy);
}
}
let p = new Proxy(p, handler)
console.log(p.name)
操作转发
let target = {}
let p = new Proxy({}, target)
p.a = 12
console.log(target.a) // 12
