So, you are also preparing for the Node.js Interview, and your interview is approaching. Are you getting nightmares about Node.js interview questions? Don’t worry, you are in the right place. We have come up with the most commonly askedNode.js interview questionsin this article. So leave...
Comprehensive, community-driven list of essential Node.js interview questions. Whether you're a candidate or interviewer, these interview questions will help prepare you for your next Node.js interview ahead of time.
JS 初学者总是对 this 关键字感到困惑,因为与其他现代编程语言相比,JS 中的这this关键字有点棘手。 “this” 一般是表示当前所在的对象,但是事情并没有像它应该的那样发生。JS中的this关键字由函数的调用者决定,谁调用就this就指向哪个。如果找不到调用者,this将指向windows对象。
function named(){ // write code here } 问题10:是否可以将匿名函数分配给变量并将其作为参数传递给另一个函数 可以。一个匿名函数可以分配给一个变量,它也可以作为参数传递给另一个函数。 问题11:JS中的参数对象是什么&如何获得传递给函数的参数类型 JS 变量arguments表示传递给函数的参数。 使用typeof运算符,...
原文:https://dev.to/macmacky/70-javascript-interview-questions-5gfi#1-whats-the-difference-between-undefined-and-null 文章分享自微信公众号: 本文参与腾讯云自媒体分享计划,欢迎热爱写作的你一起参与! 作者:前端小智 原始发表时间:2020-04-14 如有侵权,请联系cloudcommunity@tencent.com删除。
10 Interview Questions Every JavaScript Developer Should Know 第一,你知道哪两种 编程范型对 JavaScript开发者来很有用? 第二,什么是函数式编程? 第三,传统类继承和原型继承的区别在哪里? 第四,函数式编程(FP)和面向对象编程(OO)各自优点和不足是什么?
1、解释下事件代理。 事件代理就是指并不是在目标元素本身上绑定事件,而是在目标元素的某个父级元素绑定事件,在触发事件时通过target来执行相应的function。 2、解释下 JavaScript 中this是如何工作的。 this会随着不同的场合而改变,他总是指向调用函数的那个对象...
NodeJS Interview Questions – Entry Level What is Node.js? Node.js is : Open Source (Source code of Node.js is available openly and can be modified and built) Cross Platform (Works on different operating systems) Asynchronous Event Driven (Web Requests are considered as events) ...
Node.js is an open source and cross-platform JavaScript runtime environment. Run the V8 JavaScript engine (Google Chrome's core) outside the br...
back to Questions 2. What is the lexical scope? In JavaScript, lexical scope refers to the scope of a variable or a function based on its placement in the source code during the authoring phase. In other words, the visibility and accessibility of variables and functions are determined by the...