javascript technical interview questions

There are a lot of small partners who are particularly concerned about interviewing web front-end development engineers, which questions the interviewer will ask. Today, Zhuo to collect the "Ali Web front-end development of the question" to organize to share to the big guys to see, and quickly collection to prepare it ~ ~CSS box model, absolute positioning and relative positioning1) Clear floating, when need to clear the float, clear the float what ar

When interviewing the SQL Server database developer, I used a set of standard benchmark technical questions. The following problems are the problems that I think can really help eliminate unqualified candidates. They are arranged in the order of ease to difficulty. When you ask questions about the primary key and foreign key, the following

briefly summarize below: TCP multiplexing: TCP connection multiplexing is the reuse of HTTP requests from multiple clients to a single server-side TCP connection, while HTTP multiplexing is the processing of multiple HTTP requests by one client over a TCP connection. The former is a unique feature of the load balancer device, which is a new feature supported by the HTTP 1.1 protocol and is currently supported by most browsers. Content caching: Caches the content that is often used,

Preface life always needs to go forward, wait for a day without Alibaba's interview notice, and the mood is quite gloomy, but life is always going on, still need to look forward, do several PHP interview questions, after all, my main development language is PHP.Question 1: How to obtain the natural length of a string containing Chinese and English charactersConsi

Php interview question 1. use PHP to print the time format of the previous day in the format of 22:21:21 (2 points) "u % j q! S $} 0 V8 ~ 4? #? Date ("Y-m-d H: I: s", strtotime ("-1 days ")); 2. differences between echo (), print (), and print_r () (3 points)Echo is a PHP statement, print and print_r are functions, and the statement does not return values. the function can return values (even if it is not used)Print () can only print values of s

The Spring framework is now almost a standard framework for Java WEB development. So, as a Java programmer, how much do you know about Spring's main technical points? You may want to use the questions in this article to check.1. General questions1.1. What are the main features of different versions of the Spring Framework?Versionfeaturespring 2.5 was released in 2007. This is the first version that supports

PB and Database interview questions First part: PB (PB6 ~ PB7) (10 points per topic) 1. Write a global function f_center (), and the parameter Aw_window to the window type so that it is centered automatically. 2. For information on how to access image or text type data in Pb, please give an example. 3. How to detect whether the data window has been modified. 4. Write a global function F_getparentwindo

For the PHP interview questions compiled by NLP, from basic to advanced, if you want to apply for a php job, refer. The basic PHP knowledge section is also referenced by recruitment institutions. 1. evaluate the value of $ The code is as follows: $ A = "hello "; $ B = $; Unset ($ B ); $ B = "world "; Echo $; 2. evaluate the value of $ B The code is as follows: $ A = 1; $ X = $; $ B = $ a ++; Echo $

For ASP. NET programmers, there are often some technical problems during interviews. This article collects 130 common ASP. NET interview questions for your reference. 1. Briefly describe the access permissions of private, protected, public, and internal modifiers.A. private: private Members can be accessed within the class.Protected: protects members, which can b