【202308】字節前端一面 · 大廠前端面試真題

[1、Js數據類型有哪些？](1%E3%80%81Js%E6%95%B0%E6%8D%AE%E7%B1%BB%E5%9E%8B%E6%9C%89%E5%93%AA%E4%BA%9B%EF%BC%9F.md) [2、引用數據類型和基本數據類型的區別是什么？](2%E3%80%81%E5%BC%95%E7%94%A8%E6%95%B0%E6%8D%AE%E7%B1%BB%E5%9E%8B%E5%92%8C%E5%9F%BA%E6%9C%AC%E6%95%B0%E6%8D%AE%E7%B1%BB%E5%9E%8B%E7%9A%84%E5%8C%BA%E5%88%AB%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F.md) [3、如何判斷一個對象是不是空對象？](3%E3%80%81%E5%A6%82%E4%BD%95%E5%88%A4%E6%96%AD%E4%B8%80%E4%B8%AA%E5%AF%B9%E8%B1%A1%E6%98%AF%E4%B8%8D%E6%98%AF%E7%A9%BA%E5%AF%B9%E8%B1%A1%EF%BC%9F.md) [4、解釋代碼輸出](4%E3%80%81%E8%A7%A3%E9%87%8A%E4%BB%A3%E7%A0%81%E8%BE%93%E5%87%BA.md) [5、對閉包的理解？什么情況下會產生閉包？](5%E3%80%81%E5%AF%B9%E9%97%AD%E5%8C%85%E7%9A%84%E7%90%86%E8%A7%A3%EF%BC%9F%E4%BB%80%E4%B9%88%E6%83%85%E5%86%B5%E4%B8%8B%E4%BC%9A%E4%BA%A7%E7%94%9F%E9%97%AD%E5%8C%85%EF%BC%9F.md) [6、解釋代碼輸出](6%E3%80%81%E8%A7%A3%E9%87%8A%E4%BB%A3%E7%A0%81%E8%BE%93%E5%87%BA.md) [7、對Js單線程的理解？缺點是什么？設計初衷是什么？](7%E3%80%81%E5%AF%B9JS%E5%8D%95%E7%BA%BF%E7%A8%8B%E7%9A%84%E7%90%86%E8%A7%A3%EF%BC%9F%E7%BC%BA%E7%82%B9%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F%E8%AE%BE%E8%AE%A1%E5%88%9D%E8%A1%B7%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9F.md) [8、瀏覽器從輸入url到頁面渲染出來的過程？](8%E3%80%81%E6%B5%8F%E8%A7%88%E5%99%A8%E4%BB%8E%E8%BE%93%E5%85%A5url%E5%88%B0%E9%A1%B5%E9%9D%A2%E6%B8%B2%E6%9F%93%E5%87%BA%E6%9D%A5%E7%9A%84%E8%BF%87%E7%A8%8B%EF%BC%9F.md) [9、DOM樹的構建和JS代碼的執行的先后順序？](9%E3%80%81DOM%E6%A0%91%E7%9A%84%E6%9E%84%E5%BB%BA%E5%92%8CJS%E4%BB%A3%E7%A0%81%E7%9A%84%E6%89%A7%E8%A1%8C%E7%9A%84%E5%85%88%E5%90%8E%E9%A1%BA%E5%BA%8F%EF%BC%9F.md) [10、對webWorker的理解？使用限制有哪些？](10%E3%80%81%E5%AF%B9webWorker%E7%9A%84%E7%90%86%E8%A7%A3%EF%BC%9F%E4%BD%BF%E7%94%A8%E9%99%90%E5%88%B6%E6%9C%89%E5%93%AA%E4%BA%9B%EF%BC%9F.md) [11、對Js的事件循環的理解？](11%E3%80%81%E5%AF%B9Js%E7%9A%84%E4%BA%8B%E4%BB%B6%E5%BE%AA%E7%8E%AF%E7%9A%84%E7%90%86%E8%A7%A3%EF%BC%9F.md) [12、解釋代碼輸出](12%E3%80%81%E8%A7%A3%E9%87%8A%E4%BB%A3%E7%A0%81%E8%BE%93%E5%87%BA.md) [13、如果在async1()前面加上await會不會影響輸出結果？](13%E3%80%81%E5%A6%82%E6%9E%9C%E5%9C%A8%60async1%60%E5%89%8D%E9%9D%A2%E5%8A%A0%E4%B8%8A%60await%60%E4%BC%9A%E4%B8%8D%E4%BC%9A%E5%BD%B1%E5%93%8D%E8%BE%93%E5%87%BA%E7%BB%93%E6%9E%9C%EF%BC%9F.md) [14、 Promise和async/await有哪些相似性？](14%E3%80%81Promise%E5%92%8Casync-await%E6%9C%89%E5%93%AA%E4%BA%9B%E7%9B%B8%E4%BC%BC%E6%80%A7%EF%BC%9F.md) [15、有了解過React框架的哪些原理嗎？](15%E3%80%81%E6%9C%89%E4%BA%86%E8%A7%A3%E8%BF%87React%E6%A1%86%E6%9E%B6%E7%9A%84%E5%93%AA%E4%BA%9B%E5%8E%9F%E7%90%86%E5%90%97%EF%BC%9F.md) [16、React Fiber在哪個過程是可以中斷的？](16%E3%80%81ReactFiber%E5%9C%A8%E5%93%AA%E4%B8%AA%E8%BF%87%E7%A8%8B%E6%98%AF%E5%8F%AF%E4%BB%A5%E4%B8%AD%E6%96%AD%E7%9A%84%EF%BC%9F.md) [17、代碼題：實現一個convert函數，將扁平化的結構轉換成樹狀結構](17%E3%80%81%E4%BB%A3%E7%A0%81%E9%A2%98%EF%BC%9A%E5%AE%9E%E7%8E%B0%E4%B8%80%E4%B8%AAconvert%E5%87%BD%E6%95%B0%EF%BC%8C%E5%B0%86%E6%89%81%E5%B9%B3%E5%8C%96%E7%9A%84%E7%BB%93%E6%9E%84%E8%BD%AC%E6%8D%A2%E6%88%90%E6%A0%91%E7%8A%B6%E7%BB%93%E6%9E%84.md) [18、代碼題：實現輸出下一個質數](18%E3%80%81%E4%BB%A3%E7%A0%81%E9%A2%98%EF%BC%9A%E5%AE%9E%E7%8E%B0%E8%BE%93%E5%87%BA%E4%B8%8B%E4%B8%80%E4%B8%AA%E8%B4%A8%E6%95%B0.md) [19、代碼題：給一個有序數組和一個數字，要求返回該數字在有序數組中出現的起始位置和結束位置](19%E3%80%81%E4%BB%A3%E7%A0%81%E9%A2%98%EF%BC%9A%E7%BB%99%E4%B8%80%E4%B8%AA%E6%9C%89%E5%BA%8F%E6%95%B0%E7%BB%84%E5%92%8C%E4%B8%80%E4%B8%AA%E6%95%B0%E5%AD%97%EF%BC%8C%E8%A6%81%E6%B1%82%E8%BF%94%E5%9B%9E%E8%AF%A5%E6%95%B0%E5%AD%97%E5%9C%A8%E6%9C%89%E5%BA%8F%E6%95%B0%E7%BB%84%E4%B8%AD%E5%87%BA%E7%8E%B0%E7%9A%84%E8%B5%B7%E5%A7%8B%E4%BD%8D%E7%BD%AE%E5%92%8C%E7%BB%93%E6%9D%9F%E4%BD%8D%E7%BD%AE.md)