javascript technical interview questions

David Posin helps you land this next programming position by understanding important JavaScript fundamentals.JavaScript is a fun, powerful, and important language with a low barrier of entry. People from all kinds of backgrounds and careers find themselves choosing to wrestle with the chaos, is JavaScript Pro Gramming. With such a varied set of backgrounds, does everyone has the same broad knowledge of

Read the originalIn the IT world, a lot of JavaScript developers are needed. If you are capable of this role, you will have many opportunities to change jobs and raise salaries. But before you get accepted into the company, you need to demonstrate your technical prowess in order to pass the interview session. In this article, I'll show you the 5 typical

The basics of how we often get capsized in the gutter Before summing up are some of the knowledge, will be, will not be able to answer, but in the JavaScript written writing process often encountered some of their own think it is very simple, but the answer is inexplicable problems, but also some of the questions will be stunned the problem, in the written process is almost all the mistakes of this kind o

Interview Questions are a topic of great interest to recruitment companies and developers. The company hopes to learn the real level and detailed processing capabilities of developers through this topic, developers want to maximize their own level (or even play exceptionally well ). This article provides a wide range of front-end development interview

Javascript some of the questions to make many students feel headache, the following on the basis of Brother Lian Education ( www.lampbrother.net graduate students interview face questions, to make a simple share, I hope that the first into the workplace you have some help: parsing of

This article for everyone to share about-javascript: Interview frequently appear several easy wrong point, hope to help everyone 1. Preface This time, gold three silver four, many people interview, many people share face questions. In the previous period, I also temporarily as an interviewer, in order to understand th

Why do you say that, if you receive an interview invitation a few days ago, you can try it. You haven't had an interview for a few years. And interviewer This article aims to allow more programmers to understand some concepts of javascript. We already know enough about it. It's time to move closer to the deeper understanding. Why do you say that, if you receive

some of the questions in Javascript make a lot of students feel headache, the following is based on brother Lian EducationGraduate students interview face questions, to make a simple share, I hope that the first into the workplace you have some help:JavaScript face question analysis. First question/*parsing:+ priority

store small test files on a computer that are created when a user accesses a website to store the information they need.29. What are the two basic groups of dataypes in JavaScript? Primitive Reference types 34. What is the push method used in JavaScript?The push method is used to add or append one or more elements to the end of an array. With this approach, multiple elements can be attach

Basic Bubble and capture:Their definitions, their differences, and how to prevent bubbles? Basic knowledge, classic questions. But not everyone can answer this question completely and comprehensively. The interviewer needs to have his own understanding of the DOM tree. Closure:Closure is a good interview question and can be used to examine different levels of interviewers. Understand what is a closure, how

I gather a lot of questions about the JS Foundation, and share with you the success of the interviewWhat are the Q1,javascript data types?Don't underestimate the problem oh, this question is very humble but difficult to answerThe answer I recommend is from the essence of javacript language.The simple types of JavaScript include numbers, strings, Boolean values (T

Analyze the differences between fn () and return fn () in JavaScript with an elegant interview question. In js, other functions are often called in the function. In this case, fn () is called, and return fn () is called, some beginners are often confused by these two methods. Here we use an elegant interview question to analyze the differences between the two met

This article mainly introduces five typical JavaScript interview questions, which may appear in javascript interviews of various companies. For more information, see 1: Scope The Code is as follows: (Function (){Var a = B = 5;})();Console. log (B ); What will be printed on the console? Answer The above code will pr

write-only, and some6, how do you make sure that you do not traverse the properties of the prototype when using the For In loop object?Recommendation: Use the hasOwnProperty method to determine7,json formatted data, what is the case error prone?Suggestion: This question I did not answer out, just checked the information, should be the problem of anti-slash, refer to this information: http://www.cnblogs.com/lengyuhong/archive/2012/01/07/2262390.html8, how is the grouping of regular expressions d

Javascript allows you to preview images before uploading (TX interview questions). If you do not know the file control before, you can also use onchange, which leads to a loss of opportunity during the interview. Script Function yulan () { Var fileext = document. form1.UpFile. value. substring (document. form1.Up

Question about the javascript prototype chain and scope during the interview Now the school recruitment is almost over, so I have time to summarize the problems encountered during this period. I found a lot of tests on JS scope in many pen-level questions, so I will summarize the materials. As we all know, unlike other OOP languages, js is a weak type language a

Text: JavaScript for front-end questionsYesterday we shared a question about HTML and CSS , HTML and CSS for front-end questions, and today we share questions about JavaScript. I was most afraid of the interview when the interviewer asked me JS, because I really do not good