How to quickly test some javascript code?
What would be a good way to test Javascript on a browser? Should there be a localhost in my computer? and how to create one?
javascript
Deleting array elements in JavaScript – delete vs splice
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
Working with $scope.$emit and $scope.$on
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?
stop all instances of node.js server
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
React Hook Warnings for async function in useEffect: useEffect function must return a cleanup function or nothing
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
jquery SlideToggle effect in upward direction?
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 🙂
How to Create simple drag and Drop in angularjs
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..
What’s the source of Error: getaddrinfo EAI_AGAIN?
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
Pure JavaScript: a function like jQuery’s isNumeric()
There’s no isNumeric() type of function, but you could add your own: NOTE: Since parseInt() is not a proper way to check for numeric it should NOT be used.
React with ES7: Uncaught TypeError: Cannot read property ‘state’ of undefined
Make sure you’re calling super() as the first thing in your constructor. You should set this for setAuthorState method Another alternative based on arrow function: