console 命令行工具 X clear

console

"use strict"
const target = {
  msg: "hello"
};

const handler = {
    set: function(target, prop, value, receiver){
        target[prop] = value
        return false
    }
};

const proxy = new Proxy(target, handler);
proxy.msg = 'wow' // Uncaught TypeError: 'set' on proxy: trap returned falsish for property 'msg'

<!DOCTYPE html>
<html>
<body>
    Proxy:  handler.set返回false
</body>
</html>