common javascript interview questions

Questions about function call variables var a =10; function aaa(){ alert(a); } function bbb(){ var20; //10 } bbb(); Variable declaration issues function aaa(){ var a=b=10; } aaa(); alert(a);//not defined alert(b);//10 Variable lookup is the nearest principle to find, Var defined variables, when the nearest is not found, will look for the outer layer: var10 funct

5 typical JavaScript interview questions and javascript interview questions Companies in the IT industry still have high requirements for JavaScript developers. However, if the skills

10 most common HTML5 interview questions with answers, html5 interview questions with answers This article shares the 10 most common HTML5 interview

7 JavaScript interview questions for true and false javascript questions The following seven JavaScript interview questions should be asked

. NET Common interview questions,. net questions Interview question 1 What are CTS, CLS, and CLR The Common Language Runtime Library (CLR) is an implementation of CLI, including the. NET runtime engine and a class library conformi

25 JavaScript interview questions that you need to know, javascript questions 1. Use typeof bar === "object" to determine if bar is an object with potential drawbacks? How can we avoid such disadvantages? The disadvantage of using typeof is obvious (this disadvantage is the

Introduction to common interview pen questions, interview pen questions 1. # include # Include Using namespace std; Void main () { Int c = 5; If (c ++ = 5) { Printf ("% d \ n", c --); Printf ("% d", c ); } Else { Printf ("% d", c

C/c ++ common interview questions, interview questions 1. What is the role of static in C? (1) Hide. When we compile multiple files at the same time, all global variables and functions without the static prefix have global visibility. Therefore, we use static to define funct

7 JavaScript interview questions for true and false javascript questions The following seven JavaScript interview questions should be asked

This article focuses on the question of Ajax questions and answers, you can take a look at the interview of those who are how to issue, and see what the correct answer is. Now, let's see this article. 1. Do you interact with the background during work? Well, can you tell me a few parameters in the encapsulated Ajax? URL: The address where the request was sent. Type: The request method (post or get) defaults

As programmers, we are people who have dreams, sometimes when we are not satisfied with the status quo, want to further enhance their ability to expand their horizons, job-hopping may be a choice we will eventually face. But our work is all day and computer dealings, resulting in our interpersonal communication, communication is not very strong, in the interview we often have to prepare very well, in order to get a good job of the right, then I give y

Inspection by half of technology companiesProgramMember'sAlgorithm, Data structures, operating systems, programming capabilities, big companies also have IQ questions. The following are the top 10 most challenging tech companies in the United States: 1. thoughtworks; Second: Google (there will be multiple rounds of interviews involving IQ tests and instant mathematical questions ); Third: Unisys

This article describes in detail a javascript interview question that is easily overlooked, if you are interested, you can refer to this question as the last question in a set of front-end interview questions. It is used to assess the comprehensive JavaScript capabilities of

Share several typical javascript interview questions and several javascript questions These questions are a bit interesting. You can study them to help you improve your skills. 1. What is output during the call process? Functio

Several common js interview questions and js interview 1. About the number type conversion in "+" and "-" Var a = ''+ 3; // try to convert 3 to the string var B = 4; console. log (typeof a); console. log (a + B); console. log (a-B); // try to convert the string to numbervar foo = "11" + 2 + "1 "; // Add a string '1' an

10 most common HTML5 Interview Questions and Answers, html5 Questions and answers 1. What is the new HTML5 document type and character set? HTML5 document type is simple: HTML5 uses UTF-8 Encoding 2. How to embed audio in HTML5? HTML5 supports audio in MP3, Wav, and Ogg formats. 3. How to embed videos in HTML5? Similar

This article mainly shares seven JavaScript interview questions to help you successfully pass the interview, interested friends can refer to the following seven JavaScript interview questions