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Notice: Undefined index: Review in /home/webpro/public_html/library/common-functions.php on line 353 JavaScript Interview Questions You'll Most Likely Be Asked - JavaScript
JavaScript Interview Questions You'll Most Likely Be Asked is a perfect companion to stand ahead above the rest in today’s competitive job market. Rather than going through comprehensive, textbook-sized reference guides, this book includes only the information required immediately for job search to build an IT career. This book puts the interviewee in the driver's seat and helps them steer their way to impress the interviewer.
Includes:
a) 200 JavaScript Interview Questions, Answers and Proven Strategies for getting hired as an IT professional
b) Dozens of examples to respond to interview questions
c) 51 HR Questions with Answers and Proven strategies to give specific, impressive, answers that help nail the interviews
For 15 years, dynamic web content has been written in a single language: JavaScript. Now, for the first time, programmers have an alternative that doesn't add an extra layer of abstraction or require plugins. CoffeeScript provides all of JavaScript's functionality wrapped in a cleaner, more succinct syntax that encourages use of "the good parts" of the language.
CoffeeScript: Accelerated JavaScript Development is aimed at programmers who want to get a grip on this new language while improving their understanding of JavaScript. You'll learn about time-saving features like list comprehensions and splats, organize your code into modules with extensible classes, and get your feet wet with jQuery by building a fast-paced word game.
The book also introduces Node.js, the foremost server-side JavaScript environment. Node and CoffeeScript turn out to be a great match, allowing you to develop the front and back ends of a web application in the same language. With CoffeeScript in your toolkit, you can write great code anywhere.
JavaScript has evolved quite a bit since its earliest days, from a relatively basic scripting language to a full-blown programming language in its own right. You can use JavaScript to create even more breathtakingly cool Web sites than ever before. You've probably seen Web sites with the following features:
Images that change when your mouse moves over them
Slide-show animations
Input forms with pop-up messages that help you fill in the fields correctly
Customized messages that welcome repeat visitors
All of these features (and much more) can be created with JavaScript. The thing is, JavaScript isn't easy to use. The JavaScript language itself has become more complex than its earlier incarnations – but that's where his new, improved, better-tasting edition of JavaScript For Dummies comes in! Even if you're not a crackerjack programmer, you can use the techniques and sample scripts in this book to create interactive, "intelligent" Web pages bursting with animated effects.
JavaScript For Dummies, 3rd Edition, gives you all you need to know to get started with JavaScript, plus some really cool JavaScript tricks, all explained from the point of view of the first-time JavaScript programmer. Here are just a few of the topics you'll find covered:
Understanding JavaScript programming concepts
Writing your first script
Sampling browser cookies
Making your pages interactive with button events and mouse rollovers
Fiddling with forms and frames
Automating your Web site
Top Ten lists on online resources, common mistakes (and how to avoid them), and debugging your scripts
Appendixes on JavaScript reserved words, color values, special characters, and the document object model reference
JavaScript For Dummies, 3rd Edition, also includes a CD-ROM with trial versions of popular Web creations tools, such as HomeSite, Dreamweaver, NetObjects ScriptBuilder, and SurfMap JavaScript.
So if you've worked with HTML before but want to add more flexibility and punch to your pages, or even if you've never written a stick of code in your life but are eager to hop on the JavaScript bandwagon, JavaScript For Dummies, 3rd Edition, is the book for you.
Foundation Website Creation with CSS, XHTML, and JavaScript covers the entire process of building a website. This process involves much more than just technical knowledge, and this book provides you with all the information you'll need to understand the concepts behind designing and developing for the Web, as well as the best means to deliver professional, best-practice-based results.
There is far more to building a successful website than knowing a little Hypertext Markup Language (HTML). The process starts long before any coding takes place, and this book introduces you to the agile development process, explaining why this method makes so much sense for web projects and how best to implement it. Planning is vital, so you'll also learn how to use techniques such as brainstorming, wireframes, mockups, and prototypes to get your project off to the best possible start and help ensure smooth progress as it develops.
An understanding of correct, semantic markup is essential to any web professional, so this book explains how XHTML should be used to structure content so that the markup adheres to current web standards. You'll learn about the wide range of HTML elements available to you, and you'll learn how and when to use them through building example web pages.
Without creative use of Cascading Style Sheets (CSS), websites would all look largely the same. CSS gives you the ability to set your website apart from the rest while maintaining the integrity of your markup. You'll learn how CSS works and how to apply styles to your pages, enabling you to realize your design ideas in the browser.
JavaScript can be used to make your website easier and more interesting to use. This book provides information on appropriate uses of this technology and introduces the concepts of programming using it. You'll also see how JavaScript works as part of the much-hyped technique Ajax and in turn where Ajax fits into the wider Web 2.0 picture.
While a website is being built, it needs to be tested across multiple browsers and platforms to ensure that the site works for all users, regardless of ability or disability, and the book explains how best to do these tasks. Then, it discusses the process of launching and maintaining the site so that it will continue to work for all its users throughout its life-cycle.
The book concludes by covering server-side technologies, acting as a guide to the different options available and explaining differences between available products. With insights from renowned experts such as Jason Fried of 37signals, Daniel Burka of Digg and Pownce, and Chris Messina of Citizen Agency, this book provides invaluable information applicable to every web project, regardless of size, scope, or budget.
Create dynamic, interactive Web pages with the latest upgrade to this flexible development tool. Coverage includes event handling, object oriented programming, IE specific content, XML, and sample code that lets you work through projects and provides groundwork for your own creations. Provides information for new and non-professional developers and also more advanced coverage for experienced JS developers who want a comprehensive reference.
Question : How do I code a text that shows up only if Javascript isn't enabled in the browser?
What is the code to display text only when the user doesn't have javascript enabled (so it would say "you need javascript enabled to view this) but doesn't show up when javascript IS enabled, just running the script? I hope that makes sense. Thanks!
Answer:
You need to have JavaScript enabled.
The simplest way would perhaps be to use the
Question : How can i get JavaScript on my blackberry pearl? Would it be safe to download if necessary?
I just got a blackberry pearl. I wanted to get access to my bank account information on line but when i try log in in, it says: Your browser is not capable of viewing this site because it does not support JavaScript or JavaScript may be disabled. Please enable JavaScript. Were i can i get JavaScript? Or is it already on my phone, i just have to enable it? If i have to download it, will it be safe to do so?
Answer:
It depends on the bank site whether the BlackBerry Java Script will actually work.Try these solutions. Open your browser, click the menu button, scroll to Options. Go into Browser Configuration and check "Support JavaScript". Try the website. If it still doesn't work, go back into the same setting, keep Support JavaScript checked and go to "Browser Identification", select Internet Explorer. This can also be known as "Browser Emulation Mode". Now try the website. If it still doesn't work, then you're sunk. But these are the best attempts and they do sometimes work. Under normal circumstances I can't login to by bank, but with these settings mine works.Good luck.
Question : How ethical to use Javascript libraries that are available on the net?
I want to do something with JavaScript on my website but don't know how to implement it, but i've found it has already been written by someone and is available to download free as they've put it on net.So is it right morally to use something that someone has already been written? does this count as cheating? does it infringe any copyright?
Answer:
I have used jquery libraries after making sure that the libraries are covered under the GPL license. Most, if not all jquery libraries are under such libraries. Please read the license before you use it on your site. In most cases, you have to include the lib in your distribution. I go a head and do that anyway.Take a look at http://whatiscopyright.org/ it will help a lot.
Question : JavaScript?
Does anyone know programs or software that creates the JavaScript tags for you? Im in a class and we have to build sites using JavaScript manually in notepad.
Answer:
I agree with Joanna... you are better off in a simple editor... but you need a good implementation of javascript! Not that stuff that comes with Internet Explorer!I suggest you use Firefox (http://getfirefox.com) for your debugging and syntax checking. Much more helpful errors!and when you get serious you can get a plug-in call firebug... it can trace and debug even easier!
Question : Javascript?
I'm not allowed to use spellcheck, cannot edit my questions, cannot press "show" on hidden (-5) answers. It says "must have Javascript enabled."I've gone to Tools, Internet Options, followed that whole thing.I've gone to Java.com and downloaded the latest version.Any other ideas? This sucks
Answer:
Welll, either it's a temporary thing due to the tinkering that Yahoo is doing today in Answers (although I'm not having that problem today) or perhaps you could retrace your steps: Tools, Internet Options, Security tab, Custom Level, look for "Scripting" heading (there are lots of scripting items, you want the one that just says Scripting), the sub-heading is Active Scripting, click enable, click OK at the bottom, click Yes to the warning message, click OK again.
Question : How to use Javascript animation to change the size of a div?
Im trying to use purely Javascript to animate the sizing of a div. Basically I want the div to slide up and down when called to do so. Any help? Thanks.
Answer:
What you're talking about is a combination of JavaScript and CSS. You must use CSS relative positioning on the div you want to move, then adjust its "top" setting with JavaScript. To create an actual slide effect (and not just have the div jump around), you need to implement timers. I pasted the basic idea as a test webpage. Simply copy and paste into a blank html document. If you want to use this code to change the height of the div (your question wasn't very clear), you should replace the style.top code with style.height.Movement JS
Question : How can JavaScript be used to display things differently in two different browsers?
Hey everyone, I started programming and was wondering how JavaScript can be used to display things differently in two different browsers? Thanks for all help!Sorry, I mean like explain to me? I understand the code but what are the different ways in which Javascript can be used to display things differently in two different browsers? Thanks!
Answer:
Use this to have all details of the browser in use:(Put "document.write ( " sign for BR " );" between each for clarity.)Use any of these variables to decide what to do...UA (User agent) is the name of the browser (a long string)Get the screen width (resolution)function GetW ( ){var myWidth = 0;if( typeof( window.innerWidth ) == 'number' ) //Non-IEmyWidth = window.innerWidth;else if ( document . documentElement && ( document . documentElement . clientWidth || document . documentElement . clientHeight ) ) {//IE 6+ in 'standards compliant mode'myWidth = document . documentElement . clientWidth;}else if ( document.body &&( document . body . clientWidth || document . body . clientHeight ) ) {//IE 4 compatiblemyWidth = document.body.clientWidth;}return (myWidth);}(spaces and CR added for clarity and YA line cutter!)
Question : How do you fix JavaScript errors using debugger/developer tools, in interent explorer?
As of two days ago I can no longer attach things or send emails using my university email account with internet explorer because of JavaScript errors. I think it is a runtime error?! Anyway, I kow how to open the debugger from selecting it from the tools menu in IE and it does detect problems with this website, but I have no idea what I need to do with the debugger to fix them. Can you please help. Thanks.It is meant for anyone to use. Look at developer tools in the dropdown menu of tools. It isn't an ie problem, its my pc which I can fix.
Answer:
I don't know what debugger you are talking about, but I'm pretty shure the tool is meant for developers, not users.Aks the administrator to fix it, and until then, you can't do much but use another browser.
Question : How can I use Javascript to write to a text file locally?
Hi,can i use javascript on my computer to write to a text file locally?Thanks!
Answer:
yes it can be done using JavaScripthere goes the codehttp://www.geocities.com/asadwithcaliber/Document1.txtdon't know why but seemed to work only on IE :(
Question : How do I make my javascript work for youtube?
I recently downloaded firefox and youtube no longer works on my laptop. I downloaded the most recent flash player and I checked to see that the javascript was turned on and it is. I looked it up and those were the two suggestions everyone seemed to have, but its not working. What do I do?
Answer:
If you keep getting "HELLO, YOU EITHER HAVE JAVASCRIPT TURNED OFF OR AN OLD VERSION OF ADOBE'S FLASH PLAYER....GET THE LATEST FLASH PLAYER":don't bother downloading and re-installing the latest Flash over and over and over again.You will get absolutely nowhere doing that, because that is only adding to the problem.There can really be only 3 possibilities:1) something is wrong with YouTube2) something is wrong with your cache3) something is wrong with your Flash1) YOUTUBE:Your problem may fix itself within a couple hours, or by thenext day, because YouTube often "shuts down" a bunch oftheir own servers every single day without warning anybody, in order to update all kinds of stuff. During those occasions, it's really YouTube's data transmissions of "Java" or "Flash"that are poor -- not your reception of it.2) CACHE:If the following day your YouTube is still stuck and showingyou those awful "JavaScript" and "Flash Player" messages, it's possible that your sub-directories of "temporary internet files" and "cache" memory are full, and can't take anymore.This typically results in videos being totally unable to bufferand make it onto your computer screen. "Temporary internet files" are 1000s of tiny bits of websitespermanently put on your computer's hard-drive. They'll stay there forever and ever, gradually plugging up your computer much like hair slowly clogs a sink drain, until you get rid ofthem once and for all (or at least everytime things go awry).Because your computer now has such little space in which to "cache" a video, YouTube will mistakenly think that yourJavaScript is off or that your Flash player (unable to absorbany more videos) is old -- meaning Flash 7 or older.The solution to all that is to exit YouTube (but not your web browser), then clear your "cache" of all its "TIFs", "cookies"and "history". (See below.) After that, shutdown and reboot.3) FLASH:Nothing about watching YouTube has really changed in thepast 2 years. (Technically, you could still even use Flash 8if you wanted to.) It looks like the newest Flash players arecausing many YouTubers a whole lot of grief, especially all 8 variations of version 10.It's absolutely nuts that there's 10.0.525, 10.1.218, 10.2.26,10.2.54, 10.12.10, 10.12.36, 10.15.3 and 10.22.87. Usuallymost updates are good for only 1 thing:...software conflicts.I have never strayed away from 9.47, and there are a bunchof "flashers" who still live by 9.45. Think of those 2 Flasheslike Windows XP compared to Vista. Please have a look atthe "Asker's" response to this other "Best Answer" of mine:http://answers.yahoo.com/question/index?qid=20081125075929AABZpVSIf that seems interesting to you, here is the appropriate link:http://www.oldapps.com/flash_player.php?old_flash_player=14Note 1: if you've got Google Web Accelerator or somethingsimilar to it...dump it, burn it, trash it, disable it, uninstall it, -- do everything you can to get rid of it. GWA conflicts with YouTube. Clicking "Don't Accelerate This Website" will nothelp you whatsoever. Also, most "Messenger" applicationshave a way of mucking up YouTube.Note 2: longer videos may require "Flash" and "Shockwave"in order to play properly. Other than that, avoid those sales pitches that some Yahooers may be shilling, because they are really disguised salespeople & peddlers. Their answershave nothing to do with your question, and their wares mayactually worsen your problem. Besides, what kind of idioticanswer is "Despite the fact you can't even watch or access videos, buy our downloader." [my paraphrase]Note 3: a very odd fix that once worked for me was alteringthe URL from "www.youtube.com" to simply "youtube.com"(or you could even try "ca.youtube.com").Note 4: there's always the strange possibility that you mayhave gone through the whole process of downloading Flash, BUT DID YOU ACTUALLY INSTALL IT? If you have Firefox,did you "enable" the Flash "add-on"?I hope that my information proves to be quite helpful to you.Internet Explorer 6:→ Tools → Internet Options → Delete Cookies → OK→ Delete Files → OK→ Clear History → Yes → OKInternet Explorer 7:→ Tools → Internet Options → Delete...→ Delete files → Yes→ Delete cookies → OK→ Delete history → OK→ Close (browsing history window)→ OKMozilla Firefox→ Tools → Clear Private Data[x] Browsing History[x] Download History[x] Saved Form and Search History[x] Cache[x] Cookies→ Clear Private Data NowApple Safari 3:→ Edit → Preferences→ Security (tab) → Show Cookies→ Remove All → Doneafter that:→ Safari → Empty Cache → Emptyafter that:→ History → Clear History
