ReactJS: setTimeout() not working?
Do Otherwise, you are passing the result of setState to setTimeout. You can also use ES6 arrow functions to avoid the use of this keyword:
javascript
How to use iMonkey in an iOS app
iMonkey looks like an interesting way of embedding a JS runtime in an iOS app, but I can’t find any examples on how to actually run some JS code. I can build/link the lib, include the jsapi.h header (from the src directory), but it trips over various linker errors (‘undefined symbol for architecture…’) when I try … Read more
TypeError: Cannot Set property ‘onclick’ of null
ids are case sensitive. So you element is #stop and not #Stop Just make sure to do this for all the elements.
What is the fastest factorial function in JavaScript?
You can search for (1…100)! on Wolfram|Alpha to pre-calculate the factorial sequence. The first 100 numbers are: If you still want to calculate the values yourself, you can use memoization: Edit: 21.08.2014 Solution 2 I thought it would be useful to add a working example of lazy iterative factorial function that uses big numbers to get exact result with memoization and cache as comparison I assume you would use some kind … Read more
AJAX response error: net::ERR_EMPTY_RESPONSE
The response you’re getting is actually correct. Per the docs, Firebase returns a 200 status code and an empty response. net::ERR_EMPTY_RESPONSE is exactly that. What you should do is check for both null and a 200 status code in the response; if true, you can safely assume that the post was deleted. My personal opinion is that Firebase should really consider returning something more … Read more
Should I use JSLint or JSHint JavaScript validation?
[EDIT]This answer has been edited. I’m leaving the original answer below for context (otherwise the comments wouldn’t make sense). When this question was originally asked, JSLint was the main linting tool for JavaScript. JSHint was a new fork of JSLint, but had not yet diverged much from the original. Since then, JSLint has remained pretty … Read more
How do I format date in jQuery datetimepicker?
Here you go. You need to pass datepicker() the date formatted correctly.
Preloading images with JavaScript
Yes. This should work on all major browsers.
Why is window.showModalDialog deprecated? What to use instead?
Why is window.showModalDialog deprecated? From http://tjvantoll.com/2012/05/02/showmodaldialog-what-it-is-and-why-you-should-never-use-it/, In general the idea of putting a native dialog implementation into the browser was a really good idea, but window.showModalDialog was a bad implementation that is riddled with issues and poor browser support. (…) Note that (…) [a modal dialog using showModalDialog] is a full HTML document, not a snippet that is injected … Read more
How do I do a Date comparison in Javascript?
Reference to Date object