面试-dh

FE

  1. 项目中的难点和取得的成绩

  2. Event Loop

  3. vue的更新是在微任务还是宏任务之后? nextTick 是promise

  4. Http1.0 http1.1 http2.0 和 https

    Http2 多路复用的具体实现原理

    https 具体的过程

  5. vue-router的原理以及自己实现的话怎么实现

  6. 怎样判断两个对象是否相等

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    let a = {name: undefined,age: 13}
    let b = {name1: undefined,age: 13}

    function shallowEqual(a,b) {
        const keysA = Object.keys(a)
        const keysB = Object.keys(b)
        if(keysA.length !== keysB.length){
            return false
        }
        for(let i = 0; i < keysA.length; i++){
            if(!b.hasOwnProperty(keysA[i]) || !Object.is(a[keysA[i]],b[keysA[i]])){
                return false
            }
        }

        return true
    }
    console.log(shallowEqual(a,b))