htsclch的博客

1.递归 function deepCopy(a) { let cloned = Array.isArray(a)? [] : {}; if(a && typeof a === "object") { for (let i in a) { if(a.hasOwnProperty(i)) { if(a[i] && typeof a[i] === "object") { cloned[i] = deepCopy(

一. 异步任务 微任务： Promise，process.nextTick 宏任务：整体代码script，setTimeout，setInterval setTimeout(()=>{ console.log("1") }) var p = new Promise((resolve, reject) => { console.log("2") resolve() }) p.then(() => { console.log("3") }) console.log(".