I have the following problem: I’m trying to write a Javascript game, and the character is being controlled by the arrow keys. The problem is, when one keeps the key pressed, there is a short delay between firing the first keypress and the repeated keypress. Also, when one presses the “right arrow key” and keeps it pressed, and then presses
How can I get pixel data of every frame in a HTML5 element
I’m thinking I’ll have to wait for the video to finish loading, then set up an interval (at 1/24 sec.) to get the current frame data, for the duration of the video. But that seems pretty hacky and looks like it might skip frames and such… So, is there a “onFrameChange” listener I can hook on to, so I can
Incrementing a date in JavaScript
I need to increment a date value by one day in JavaScript. For example, I have a date value 2010-09-11 and I need to store the date of the next day in a JavaScript variable. How can I increment a date by a day? Answer Three options for you: 1. Using just JavaScript’s Date object (no libraries): My previous answer
IE6 Covering Div
I have a Google Map on one web page where I want to disable both scrolling and zooming. I accomplish this by having an empty DIV element with absolute positioning cover the map area. Firefox/Chrome work fine, but IE6 doesn’t really care about this DIV. For some reason, it just lets me drag the map. I set the DIVs background
How do I include – and ‘ in this regular expressions?
I have a this regular expression below for some input name fields. How do I include an apostrophe and a hyphen in this? Answer Hyphen is already included (twice), you can add the apostrophe by just editing it into the character class: You can rewrite it to look like this, so that there’s no need to escape the hyphen and
How do I check if file exists in jQuery or pure JavaScript?
How do I check if a file on my server exists in jQuery or pure JavaScript? Answer With jQuery: EDIT: Here is the code for checking 404 status, without using jQuery Small changes and it could check for status HTTP status code 200 (success), instead. EDIT 2: Since sync XMLHttpRequest is deprecated, you can add a utility method like this
Preloading images with JavaScript
Is the function I wrote below enough to preload images in most, if not all, browsers commonly used today? I have an array of image URLs that I loop over and call the preloadImage function for each URL. Answer Yes. This should work on all major browsers.
How to serialize current div by using $(this).parent() with JQuery?
I am trying to serialize the current div by using a clickevent. See code for good explanation: Alert will show nothing, which means the div is not being serialized. This is the html in question. It’s inside a dialog, which is also the reason why I have to use live(). Also this code is working without a problem to remove
Why do results vary based on curly brace placement?
Why do the code snippets below, taken from this article, produce different results due to only a single change in the placement of curly braces? When the opening curly brace { is on a new line, test() returns undefined, and “no – it broke: undefined” is displayed in the alert. When the brace is on the same line as return,
Get CSS path from Dom element
I got this function to get a cssPath : But i got something like this : html > body > div#div-id > div.site > div.clearfix > ul.choices > li But to be totally right, it should look like this :html > body > div#div-id > div.site:nth-child(1) > div.clearfix > ul.choices > li:nth-child(5) Did someone have any idea to implement it