Web1020/14.ts/3.编译选择/src/c.ts

console.log("这是第三个ts文件1");
let c;
c = 12;
c = '1'

let d = 10;
console.log(c + d,'x')
// document.getElementById
// document.getElementById
// c='12';
let box = document.getElementById("box");
box?.addEventListener('click',function() {
    console.log('一个盒子')
})