console.log("你好");
let a = 12;
// document.getElementById
// document
// a = '12';
// console.log(this);
let b = {
    name: "孙悟空"
};
function fn1() {
    console.log(this);
    return this.name;
}
var box = document.getElementById("box");
box.addEventListener("click", function () {
    console.log("盒子");
});