ES6 implements the observer mode through proxy and reflection

// Observer mode 
let queueObserve = new Set();// Observation pool 
let observe = fn=>queueObserve.add(fn);// The observer 
let observable=data=>new Proxy(data,{set});// Data trigger , Through the agent 
function set(t,k,v,r) {
    let d = Reflect.set(t,k,v,r);
    // @ts-ignore
    queueObserve.forEach(v=>v());// Traverse the pool and call the methods in the pool 
    return d;
}
// Observe the data object 
let data=observable({
    name:'RemoteDev',
    job:'IT'
});

function print() {
    console.log(`${data.name},${data.job}`);
}
observe(print);// The observer 
data.name='RM';// Data changes , call observable--->set---> Traversal pool