2019最新Web前端经典面试试题

末蓝、 2021-12-11 14:11 284阅读 0赞

JavaScript常见面试题集

1.  [JavaScript类型][JavaScript]
2.  [this关键字][this]
3.  [什么是闭包（closure），为什么使用闭包？][closure]
4.  [说说你对 AMD 和 CommonJS 的了解。][AMD _ CommonJS]
5.  [请解释原型继承（prototypal inheritance）的工作原理。][prototypal inheritance]
6.  [请解释事件委托（event delegation）][event delegation]
7.  [null、undefined和未声明变量之间有什么区别？如何检查判断这些状态值？][null_undefined]
8.  [你如何组织自己的代码？][Link 1]
9.  [.call和.apply有什么区别？][.call_.apply]
10. [请尽可能详细地解释 Ajax。][Ajax]
11. [请说明 JSONP 的工作原理，它为什么不是真正的 Ajax？][JSONP _ Ajax]
12. [请解释变量提升（hosting）。][hosting]
13. [请描述事件冒泡。][Link 2]
14. [“attribute” 和 “property” 之间有什么区别？][attribute_ _ _property_]
15. [==和===的区别是什么？][Link 3]
16. [为什么不要使用全局作用域？][Link 4]
17. [请解释单页应用是什么，如何使其对 SEO 友好。][SEO]
18. Promise代替回调函数有什么优缺点？
19. 使用let、var和const创建变量有什么区别？
20. 什么是事件循环？调用堆栈和任务队列之间有什么区别？
21. 高阶函数（higher-order）的定义是什么？
22. 请给出一个解构（destructuring）对象或数组的例子。

微信小程序问题列表

1.  简单描述一下微信小程序的相关文件类型
2.  你是怎么封装微信小程序的数据请求的
3.  有哪些传递参数的方法
4.  你使用哪些方法，来提高微信小程序的应用速度
5.  小程序于原生app那个好
6.  简述微信小程序原理
7.  分析一下微信小程序的优劣势
8.  微信小程序和H5的区别
9.  怎么解决小程序的异步请求问题
10. 小程序的双向数据绑定和Vue哪里不一样
11. 说说你眼中的生命周期
12. 微信小程序如何调用登录接口

[JavaScript]: https://gitee.com/iwensxt/new-web-interview/blob/master/questions/JavaScript/JavaScript%E7%B1%BB%E5%9E%8B.md
[this]: https://gitee.com/iwensxt/new-web-interview/blob/master/questions/JavaScript/this%E5%85%B3%E9%94%AE%E5%AD%97.md
[closure]: https://gitee.com/iwensxt/new-web-interview/blob/master/questions/JavaScript/%E4%BB%80%E4%B9%88%E6%98%AF%E9%97%AD%E5%8C%85%EF%BC%88closure%EF%BC%89%EF%BC%8C%E4%B8%BA%E4%BB%80%E4%B9%88%E4%BD%BF%E7%94%A8%E9%97%AD%E5%8C%85.md
[AMD _ CommonJS]: https://gitee.com/iwensxt/new-web-interview/blob/master/questions/JavaScript/%E8%AF%B4%E8%AF%B4%E4%BD%A0%E5%AF%B9%20AMD%20%E5%92%8C%20CommonJS%20%E7%9A%84%E4%BA%86%E8%A7%A3.md
[prototypal inheritance]: https://gitee.com/iwensxt/new-web-interview/blob/master/questions/JavaScript/%E8%AF%B7%E8%A7%A3%E9%87%8A%E5%8E%9F%E5%9E%8B%E7%BB%A7%E6%89%BF%EF%BC%88prototypal%20inheritance%EF%BC%89%E7%9A%84%E5%B7%A5%E4%BD%9C%E5%8E%9F%E7%90%86.md
[event delegation]: https://gitee.com/iwensxt/new-web-interview/blob/master/questions/JavaScript/%E8%AF%B7%E8%A7%A3%E9%87%8A%E4%BA%8B%E4%BB%B6%E5%A7%94%E6%89%98%EF%BC%88event%20delegation%EF%BC%89.md
[null_undefined]: https://gitee.com/iwensxt/new-web-interview/blob/master/questions/JavaScript/null%E3%80%81undefined%E5%92%8C%E6%9C%AA%E5%A3%B0%E6%98%8E%E5%8F%98%E9%87%8F%E4%B9%8B%E9%97%B4%E6%9C%89%E4%BB%80%E4%B9%88%E5%8C%BA%E5%88%AB%EF%BC%9F%E5%A6%82%E4%BD%95%E6%A3%80%E6%9F%A5%E5%88%A4%E6%96%AD%E8%BF%99%E4%BA%9B%E7%8A%B6%E6%80%81%E5%80%BC.md
[Link 1]: https://gitee.com/iwensxt/new-web-interview/blob/master/questions/JavaScript/%E4%BD%A0%E5%A6%82%E4%BD%95%E7%BB%84%E7%BB%87%E8%87%AA%E5%B7%B1%E7%9A%84%E4%BB%A3%E7%A0%81.md
[.call_.apply]: https://gitee.com/iwensxt/new-web-interview/blob/master/questions/JavaScript/call%E5%92%8Capply%E6%9C%89%E4%BB%80%E4%B9%88%E5%8C%BA%E5%88%AB.md
[Ajax]: https://gitee.com/iwensxt/new-web-interview/blob/master/questions/JavaScript/%E8%AF%B7%E5%B0%BD%E5%8F%AF%E8%83%BD%E8%AF%A6%E7%BB%86%E5%9C%B0%E8%A7%A3%E9%87%8A%20Ajax.md
[JSONP _ Ajax]: https://gitee.com/iwensxt/new-web-interview/blob/master/questions/JavaScript/%E8%AF%B7%E8%AF%B4%E6%98%8E%20JSONP%20%E7%9A%84%E5%B7%A5%E4%BD%9C%E5%8E%9F%E7%90%86%EF%BC%8C%E5%AE%83%E4%B8%BA%E4%BB%80%E4%B9%88%E4%B8%8D%E6%98%AF%E7%9C%9F%E6%AD%A3%E7%9A%84%20Ajax.md
[hosting]: https://gitee.com/iwensxt/new-web-interview/blob/master/questions/JavaScript/%E8%AF%B7%E8%A7%A3%E9%87%8A%E5%8F%98%E9%87%8F%E6%8F%90%E5%8D%87.md
[Link 2]: https://gitee.com/iwensxt/new-web-interview/blob/master/questions/JavaScript/%E8%AF%B7%E6%8F%8F%E8%BF%B0%E4%BA%8B%E4%BB%B6%E5%86%92%E6%B3%A1.md
[attribute_ _ _property_]: https://gitee.com/iwensxt/new-web-interview/blob/master/questions/JavaScript/%E2%80%9Cattribute%E2%80%9D%20%E5%92%8C%20%E2%80%9Cproperty%E2%80%9D%20%E4%B9%8B%E9%97%B4%E6%9C%89%E4%BB%80%E4%B9%88%E5%8C%BA%E5%88%AB.md
[Link 3]: https://gitee.com/iwensxt/new-web-interview/blob/master/questions/JavaScript/==%E5%92%8C===%E7%9A%84%E5%8C%BA%E5%88%AB%E6%98%AF%E4%BB%80%E4%B9%88.md
[Link 4]: https://gitee.com/iwensxt/new-web-interview/blob/master/questions/JavaScript/%E4%B8%BA%E4%BB%80%E4%B9%88%E4%B8%8D%E8%A6%81%E4%BD%BF%E7%94%A8%E5%85%A8%E5%B1%80%E4%BD%9C%E7%94%A8%E5%9F%9F.md
[SEO]: https://gitee.com/iwensxt/new-web-interview/blob/master/questions/JavaScript/%E8%AF%B7%E8%A7%A3%E9%87%8A%E5%8D%95%E9%A1%B5%E5%BA%94%E7%94%A8%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%8C%E5%A6%82%E4%BD%95%E4%BD%BF%E5%85%B6%E5%AF%B9%20SEO%20%E5%8F%8B%E5%A5%BD.md