Does Javascript support conditional if/then regular expressions?

1 Answer

Answer :

Javascript is an ECMA language whose regex implementation sadly doesn’t include the conditional syntax. Here’s a very thorough reference chart in case you’re curious about other implementations.

Related questions

Description : How do I make an HTTP request in JavaScript?

Last Answer : There are several ways to make an HTTP request in JavaScript, and the choice of which to use depends on the type of request you need to make and whether you want to use modern standards or not. ... .data)); Which option you choose will depend on your needs and which browsers you need to support.

Description : How to add 2 buttons that do 2 things in JavaScript?

Last Answer : Can you share some code? Can probably get you on the right track here. To start, I'd double check whatever you're using to target the form and make sure it's right. Some common things might be ... sure it's not shared between both and make sure you're calling the right target for the right button.

Description : How to make a javascript code between shortcodes showing in Wordpress?

Last Answer : answer:My guess is that Wordpress is stripping the javascript out. I found this: http://codex.wordpress.org/Using_Javascript

Description : Anyone here who is a good JavaScript coder or can recommend someone who is?

Last Answer : PMing you, @ETpro.

Description : How can client-side Javascript determine the iOS version of an iPhone?

Last Answer : This sums up the atate of the art pretty well.

Description : Is Google Docs developed by JavaScript?

Last Answer : It is developed in Javascript.

Description : My JavaScript code doesn't work in Firefox?

Last Answer : Frames…haven’t seen those in a long time.

Description : Do you know a website where an option selection list shows you a popup or lightbox of each option onMouseover or onSelect?

Last Answer : Can’t you invoke a Javascript function with onmouseover and onmouseout?

Description : Why is drag-and-drop image upload not implemented more often on websites?

Last Answer : answer:When you let people upload to your server there are always security risks, but as far as I know there are no extra security problems with the system you mention. At a guess, I'd say ... but IE also has problems some times understanding even the most basic of HTML code, so no surprises there.

Description : Why Won't My Lightbox Light Up in IE?

Last Answer : What version of IE is it?

Description : How to connect to the server on the chatroom on your website?

Last Answer : answer:This is the Blogger Chat Box: http://blog.chatroll.com/how-to/add-a-free-blogger-chat-box-widget-to-your-blogspot-blog You will have less control over the specs, but it would work :D Hope this helps.

Description : Best books for learning ActionScript?

Last Answer : read the adobe manual here. Not joking. If you know how to program already, this will be the most complete explanation. Plenty of inline go samples as well.

Description : How do I get MySpace music to play on Camino?

Last Answer : I think you can’t do it.

Description : jQuery or Mootools?

Last Answer : DOMAssistant ;-) Seriously, though, it's pretty much impossible to answer your question unless you tell us more. Specifically, what is/are your use case(s)? What are you trying to do that you want ... What do you value in a library (e.g., comprehensiveness? smallest possible download? ease of use?)?

Description : Scriptaculous effect on Element.insert?

Last Answer : answer:Assuming that you only want to highlight or blind down (or any other effect that you desire) only the content you've inserted and not the whole activity' object, then I think you'll be faced ... insert({ top: ''+transport.responseText+'' }); new Effect.BlindDown( newText'); Hope that helped!

Description : Regular expressions in windows shell to delete multiple files, is it possible?

Last Answer : Windows's cmd or command.com aren't real shells in the Unix sense. I'd say you're better off installing a scripting language like Perl (http://www.activeperl.com is the easiest Windows solution) and then run ... unlink $_ if -f and !/\.jpe?g$/i and $_ ne q{gallery.xml} }, q{directory_to_search})

Description : Any Yahoo Pipes / Regular expressions gurus around?

Last Answer : answer:Because it may help, here’s an example of the HTML that makes up the description section of the feed: Talk like a Pirate Source: www.youtube.com Learn to talk like a pirate. From loadingreadyrun.com

Description : Which module in Python supports regular expressions? -Web-Development

Last Answer : The Python "re" module provides regular expression support. The re.search() method takes a regular expression pattern and a string and searches for that pattern within the string. If the search is successful, search() returns a match object or None otherwise.

Description : Consider the following statements related to compiler construction: I. Lexical Analysis is specified by context-free grammars and implemented by pushdown automata. II. Syntax Analysis is specified by regular expressions and implemented by ... Only l (2) Only ll (3) Both I and II (4) Neither I nor Il

Last Answer : Answer: 4

Description : What is true about PaaS? A. PaaS tool is a fully integrated development environment. B. PaaS systems support standards such as HTML, JavaScript, or other rich media technologies. C. PaaS offers the runtime environment for applications. D. All of the above

Last Answer : All of the above

Description : is this conditional true or falseIf x2 = 25, then x = ±5.?

Last Answer : 1

Description : Is this statement true or falseThe (then) part of a conditional statement is the conclusion.?

Last Answer : 1

Description : is this conditional true or falseIf a month has 31 days, then it is March.?

Last Answer : Answers is the place to go to get the answers you need and to ask the questions you want

Description : is this conditional true or falseIf a year has 366 days, then it is a leap year.?

Last Answer : 1

Description : which figure is a counterexample to the following conditional statementIf a triangle has an angle that measures 60°, then it is equilateral.?

Last Answer : A+

Description : When an endorsee give up some of his/her rights then it is called __________ A. Restrictive Endorsement B. Partial Endorsement C. Conditional Endorsement D. Facultative Endorsement E. Blank Endorsement

Last Answer : D. Facultative Endorsement Explanation: When notice of dishonour is received by the endorsee instead of endorser it is known as facultative endorsement.

Description : Where the transfer of the property in the goods is to take place at a future time or subject to some condition, then such contract is called: A. An agreement to sell B. A contract to Sale C. Future Contract D. Conditional contract

Last Answer : A. An agreement to sell

Description : If the expressions (px^3 + 3x^2 – 3) and (2x^3 – 5x + p) when divided by (x – 4) leave the same remainder, then what is the value of p ? -Maths 9th

Last Answer : Given that the following polynomials leave the same remainder when divided by (x - 4) : We are to find the value of a. Remainder theorem: When (x - b) divides a polynomial p(x), then the remainder is p(b). So, from (i) and (ii), we get Thus, the required value of a is 1.

Description : If the sum and difference of two expressions are 5a^2 – a – 4and a^2 + 9a – 10 respectively, then what is their LCM ? -Maths 9th

Last Answer : answer:

Description : If `alpha, beta` are the roots of the quadratic equation `lx^(2) + mx + n = 0`,then evaluate the following expressions. (a) `alpha^(2) + beta^(2)` (b)

Last Answer : If `alpha, beta` are the roots of the quadratic equation `lx^(2) + mx + n = 0`,then evaluate the following ... ) `1/(alpha^(3)) + 1/(beta^(3))`

Description : If A over B and C over D are rational expressions then?

Last Answer : 1

Description : Consider the following statements : (a) Boolean expressions and logic networks correspond to labelled acyclic digraphs. (b) Optimal Boolean expressions may not correspond to simplest networks. (c) Choosing essential blocks first in a Karnaugh map ... (b) only (C) (a) and (b) (D) (a), (b) and (c)

Last Answer : (D) (a), (b) and (c) 

Description : How can I become advanced in javascript in 2 months?

Last Answer : Study hard…work hard!!!

Description : How do I simply repeat a line of code 4x in Javascript?

Last Answer : something like a for loop is pretty simple, and gives you a handy counter if needed. for(var i = 0; i < 4; i++) { forward(); }

Description : Help making a questionaire with javascript/html?

Last Answer : Are you familiar with Javascript? Are you using any type of framework like jquery?

Description : Any way to directly download an audio source file when the web page is using a javascript audio player (that doesn't use filenames like "x.mp3")?

Last Answer : Could try file2hd.com to see if you can find the resource.

Description : What's bugging my simple JavaScript toggle script?

Last Answer : answer:The toggle_visibility function specifies (eng, met), not (var1, var2), so it seems not to matter what order of parameters you send it, it's going to read (eng, met) always. function toggle_visibility(eng, ... = block'; } else { e1.style.display = block'; e2.style.display = none'; }

Description : How can I swap two integers without temporary variables using JavaScript code?

Last Answer : answer:This is a trick using the exclusive or operator ^ that was used when computers were short on memory. a = (a ^ b) /* a^b, b */ b = (a ^ b) /* a^b, a */ a = (a ^ b) /* b, a */ You can also do it using subtraction for numeric ... = a - b /* a - b, b */ b = b -a /* a-b, a */ a = b - a /* b, a */

Description : How to inherit a Javascript class?

Last Answer : answer:There is no such thing as classes or object-oriented programming when it come to Javascript. Are you sure you didn't mean Java? Java is a full programming language, developed by Sun. ... used to do thing like change the background color when you hover your mouse over a certain image.

Description : Why should I use JavaScript Library if it may effect the performance of a web site?

Last Answer : You might want to check out some extremely lightweight Javascript libraries such as xui, zepto, or jQuery Mobile. However, 17KB should not be a huge concern on iOS and Android devices. On phones with ... .example.com or mobile.example.com with minimal CSS, small page size, and no Javascript at all.

Description : How to implement a JavaScript code that doing "Set as my Home Page" in Google Chrome?

Last Answer : So, you’re saying the JavaScript code for doing this works in IE and Firefox, but not Chrome? That’s weird. Let me see if I can find a script for you.

Description : What's more powerful, JavaScript or Python?

Last Answer : Python is server side. You use python to output HTML/CSS/Javascript that the browser interprets. Your browser doesn’t know what Python is.

Description : Is JQuery much slower than pure JavaScript ?

Last Answer : answer:You might be correct, there can potentially be more abstraction in JQuery with what you are doing when compared to pure JavaScript. But do note, JavaScript is client side based so it depends on your ... But if you are OK with the delay then keep using JQuery, if not, back to pure JavaScript.

Description : Has anyone ever created a timer using JavaScript?

Last Answer : answer:I think the easiest thing to do is just use an existing timer that uses 1,2,3,4 syntax and convert it to hh:mm:ss yourself. It should be a fairly straightforward conversion. You're basically just ... (I imagine there are also some existing conversions you can find, but I'd say just dive in).

Description : Name that Script. Can you help me find a JavaScript for this?

Last Answer : Sounds similar to a “Recently Viewed Items” script or module. However, you can also use a shopping cart module to set the items aside for review.

Description : Is there a code for CSS/Javascript to keep your contents in place when re-sizing a window?

Last Answer : Is your site fixed width?

Description : Which is the best javascript and actionscript editor?

Last Answer : if you have a Mac, Textmate, I use it for all my code. love it.

Description : What is the difference between javascript and AJAX?

Last Answer : Javascript is a client-side language that runs in the browser. AJAX Is javascript that for the most part uses the XMLHTTPREQUEST object to grab snippets from a server. For example.. I have a website. I want ... . The user never has to reload the page. It is all real-time. This site is AJAX heavy.

Description : How, in javascript/jquery, can I change what "this" refers to in an event handling function?

Last Answer : By using the call and apply prototype methods of Functions. For example: function example () { console.log(this); } example.call(window); this will be the window variable. example.call( a string'); this will ... 2'); Hope this helps. If you need any more help with this, feel free to just ask.

Description : Javascript help, please?

Last Answer : any ideas, anyone?