javascript coding interview questions

function. Therefore, the context here points to the latter and the function returns the properties of the object fullname . Conversely, when getFullname() test the variable is specified, that context points to the global object ( window ). Because it test is equivalent to a property set to a global object. For this reason, the function returns window a fullname property, which in this case is set in the first line of the code fragment.Question 5:call()Andapply()Fix the last problem and let the

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

The requirements for JavaScript developers in the IT community are still high, but if JavaScript developers have the skills and experience to reach a certain level, they can easily jump to a good company, and of course the salary is not a problem. But before the interview, the interview preparation should be sufficient

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

Yesterday 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 at this. But I am in the study of hard work.The first time the baby

Yesterday 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 at this. But I am in the study of hard work.650) this.width=650; "class=" AlignCenter

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 questions

it is not delayed by the number and is not queued. Then, the remaining "2", "3", both are queued, but the former needs to wait a second, the latter waiting for 0 seconds (which means that the engine completes the first two outputs immediately after the completion of the). This explains why "3" precedes "2". Issue 5: Algorithm Write a IsPrime () function that determines the prime number and returns True if it is a prime number, otherwise false. Answer I think this is one of

, explain the output of the following code, and fix the existing problems var hero = { _name: ' John Doe ', getsecretidentity:function () {return this._name; } }; var stolesecretidentity = hero.getsecretidentity; Console.log (Stolesecretidentity ()); Console.log (Hero.getsecretidentity ()); Assigning getsecretidentity to stolesecretidentity is equivalent to defining the Stolesecretidentity function: var stolesecretidentity = function () {return this._name; }

A pitfall of object questions to understand Javascript objects, The example in this article is mainly intended to attract understanding and attention to Javascript objects. In fact, it is a kind of challenge during the interview, and it is rarely used in actual projects. However, in order to improve the vigilance, let'

JavaScript is not only a low threshold, but also an interesting, powerful and very important language. People from all walks of life find their most confusing choice is the Javasscript programming language. Because there are all kinds of backgrounds, not everyone has a broad understanding of JavaScript and its rationale. Usually book, unless you go to a job interview