JavaScript: filter() for Objects

Never ever extend Object.prototype. Horrible things will happen to your code. Things will break. You’re extending all object types, including object literals. Here’s a quick example you can try: Instead create a function that you pass the object.

Best way to store a key=>value array in JavaScript?

That’s just what a JavaScript object is: You can loop through it using for..in loop: See also: Working with objects (MDN). In ECMAScript6 there is also Map (see the browser compatibility table there): An Object has a prototype, so there are default keys in the map. This could be bypassed by using map = Object.create(null) since ES5, but was seldomly done. … Read more

Jquery change background color

The .css() function doesn’t queue behind running animations, it’s instantaneous. To match the behaviour that you’re after, you’d need to do the following: The .queue() function waits for running animations to run out and then fires whatever’s in the supplied function.

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