A ‘$’ in a variable means nothing special to the interpreter, much like an underscore. From what I’ve seen, many people using jQuery (which is what your example code looks like to me) tend to prefix variables that contain a jQuery object with a $ so that they are easily identified and not mixed up with, say, … Read more
delete will delete the object property, but will not reindex the array or update its length. This makes it appears as if it is undefined: Note that it is not in fact set to the value undefined, rather the property is removed from the array, making it appear undefined. The Chrome dev tools make this distinction clear by printing empty when … Read more
How can I send my $scope object from one controller to another using .$emit and .$on methods? It doesn’t work the way I think it should. How do $emit and $on work?
Windows Machine: Need to kill a Node.js server, and you don’t have any other Node processes running, you can tell your machine to kill all processes named node.exe. That would look like this: And if the processes still persist, you can force the processes to terminate by adding the /f flag: If you need more fine-grained control and … Read more
I suggest to look at Dan Abramov (one of the React core maintainers) answer here: I think you’re making it more complicated than it needs to be. Longer term we’ll discourage this pattern because it encourages race conditions. Such as — anything could happen between your call starts and ends, and you could have gotten new … Read more
$ is defined by jQuery, which you probably haven’t referenced. A simple way to get it is to add one of the CDN urls to your template HTML:
I need to make a jquery slidetoggle effect in upward direction., now the slide toggle is working only in downward direction. When i used slide up method i couldn’t use same button to slide up and slide down the div. Here is my code: } I am a beginner in jquery., please help me 🙂
I want to know how to do drag and drop by using AngularJs. This is what I have so far: http://plnkr.co/edit/llTH9nRic3O2S7XMIi6y?p=preview..
JavaScript itself has nothing built in for handling query string parameters. Code running in a (modern) browser you can use the URL object (which is part of the APIs provided by browsers to JS): Run code snippetExpand snippet For older browsers (including Internet Explorer), you can use this polyfill or the code from the original version of this answer that predates URL: You … Read more
My server threw this today, which is a Node.js error I’ve never seen before: I’m wondering if this is related to the DynDns DDOS attack which affected Shopify and many other services today. Here’s an article about that. My main question is what does dns.js do? What part of node is it a part of? How can I … Read more