I need to convert a js object to another object for passing onto a server post where the names of the keys differ for example needs to turn into where I have lookup obj available for mapping all the keys Is there a function available in underscore.js or jQuery that I can use that does this functionality? than…
How to parse link header from github API
the github API sends the pagination data for the json results in the http link header: since the github API is not the only API using this method (i think) i wanted to ask if someone has a useful little snippet to parse the link header (and convert it to an array for example) so that i can use it
how to get all parent nodes of given element in pure javascript?
I mean an array of them. That is a chain from top HTML to destination element including the element itself. for example for element <A> it would be: Answer A little shorter (and safer, since target may not be found):
How to fire event s in a dynamically generated List in jQuery
I have created a list dynamically using JavaScript and I want to invoke click event as go in normally HTML generated list. This is what I have tried so far but I could not fire a single event. Can any one help? Answer Try: $(‘.addnew’).delegate(‘li’, ‘click’, function () { …
JavaScript strings – UTF-16 vs UCS-2?
I’ve read in some places that JavaScript strings are UTF-16, and in other places they’re UCS-2. I did some searching around to try to figure out the difference and found this: Q: What is the difference between UCS-2 and UTF-16? A: UCS-2 is obsolete terminology which refers to a Unicode implementat…
Constructor function vs Factory functions
Can someone clarify the difference between a constructor function and a factory function in Javascript. When to use one instead of the other? Answer The basic difference is that a constructor function is used with the new keyword (which causes JavaScript to automatically create a new object, set this within t…
Event listener for html5 details node state change
I am trying to add an event listener to detect a change in the state of an HTML5 details node. Initially I tried attaching a listener to the open and close events as it makes logical sense to me for a details node to have those listeners, but it doesn’t and I do not see any mention of them in
How to play only the audio of a Youtube video using HTML 5?
Is it possible to play only the audio from a YouTube video using HTML 5 and Javascript? Answer Embed the video player and use CSS to hide the video. If you do it properly you may even be able to hide only the video and not the controls below it. However, I’d recommend against it, because it will be a
Chrome extension: Get last used tab
I’m trying to create a simple plugin for Google Chrome. One of the functions would be a return to the last used tab, but I don’t know how to do it. So, is there any way to get the last used tab? Answer You could try adding a hook into the onSelected event of the tabs and just saving that
JavaScript code to stop form submission
One way to stop form submission is to return false from your JavaScript function. When the submit button is clicked, a validation function is called. I have a case in form validation. If that condition is met I call a function named returnToPreviousPage(); I am using JavaScript and Dojo Toolkit. Rather going …