2021年10月百度前端面试经验一面凉了_外派百度前端面试题难吗-优快云博客

本文链接：https://blog.youkuaiyun.com/qq_37594428/article/details/121112050

1. 项目亮点

下拉框加载数据太多了，提供了简单的解决方案被采纳

在输入框输入内容，把输入的内容传给后台，获取包含输入内容的数据，展示在下拉列表中

2. 手写布局

<style>
    * {
      margin: 0;
      padding: 0;
    }
    html,body {
      width: 100%;
      height: 100%;
    }
    .header {
      width: 100%;
      height: 60px;
      background-color: red;
    }
    .middle {
      width: 100%;
      min-height: calc(100% - 140px);
      background-color: purple;
      overflow: hidden;
    }
    .left {
      width: 160px;
      height: 400px;
      background-color: yellow;
      float: left;
    }
    .content {
      overflow: hidden;
      background-color: pink;
      
    }
    .footer {
      width: 100%;
      height: 80px;
      background-color: lightblue;
      overflow: hidden;
    }
    .content1 {
      width: 250px;
      height:950px;
      word-break: break-all;
      word-wrap: break-word;
    }
  </style>
</head>
<body>
    <div class="header">1111</div>
    <div class="middle">
      <div class="left">lllllll</div>
      <div class="content">
        <div class="content1">ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc</div>
      </div>
    </div>
    <div class="footer">3333</div>
</body>

3. promise源码 promise A+

4. async await 和 promise的区别

5. promise.race有一个抛出异常了，会走then么

promise.race看哪个promise实例的状态先改变如果先变fulfilled, 就走then，如果先变rejected，就走catch

let p1 = Promise.resolve(1)
let p2 = Promise.reject(2)
Promise.race([p1, p2]).then(res=>console.log('thenres', res))
    .catch(err=>console.log('catcherr', err))
// thenres1

let p1 = Promise.reject(1)
let p2 = Promise.resolve(2)
Promise.race([p1, p2]).then(res=>console.log('thenres', res))
    .catch(err=>console.log('catcherr', err))
// catcherr 1