Comprehensive, community-driven list of essential JavaScript interview questions. Whether you're a candidate or interviewer, these interview questions will help prepare you for your next JavaScript interview ahead of time.
浏览器包含一个方法来管理事件冒泡。事件处理程序可以调用 stopPropagation 告诉 DOM 事件停止冒泡,第二个方式是调用 stopImmediatePropagation ,它不仅停止冒泡,也会阻止这个元素上其它监听当前事件的处理程序触发。然而,停止传播事件时要小心,因为你不知道是否有其它上层的DOM元素可能需要知道当前事件。还有第三个可以控制...
Object.keys(counterArray).length // Output 3 面试题参考自:21 Essential JavaScript Interview Questions | Codementor 本文给出的面试题答案只是很多合理答案中的几个,可能会不全面,欢迎大家补充。 由于个人疏忽等原因,本文中难免会存在少量错误,欢迎大家批评指正。
这在 JavaScript 中很重要,因为它非常适合用户界面代码,并且对服务器性能非常有益。原文:https://medium.com/javascript-scene/10-interview-questions-every-javascript-developer-should-know-6fa6bdf5ad95,本文经翻译整理后发布
Review 30 general, experience and in-depth JavaScript interview questions and analyse 5 questions with insights into why employers use them and example answers.
Posted in 'General, JavaScript' by James on June 7th, 2011 The questions below were asked in a preliminary check before the actual interview.
JavaScript 未声明变量直接使用会抛出异常:var name is not defined,如果没有处理异常,代码就停止运行了。 但是,使用typeof undeclared_variable并不会产生异常,会直接返回 undefined。 var x; // 声明 x console.log(x); //output: undefined console.log(typeof y); //output: undefined console.log(z); ...
Key Javascript topics to help ace your coding interview. 1. Why JavaScript? 2. Type Coersion 3. Scoping and Closures. 4. Asynchronous Programming.
Traverse(list[i],p_callback); // recursive call } } 注:译文链接:http://www.codeceo.com/article/25-essential-javascript-interview-questions.html,英文原文:25 Essential JavaScript Interview Questions,翻译作者:码农网– 小峰,转载请注明出处。做一只勤劳的IT干货搬运工,喜欢就给个赞呗。
题目来自 25 Essential JavaScript Interview Questions。闲来无事,正好切一下。 一 What is a potential pitfall with using typeof bar "object" to