DOM access is expensive; it’s the most common bottleneck when it comes to JavaScript performance. The bottom line is that DOM access should be reduced to minimum. This means: Avoiding DOM access in loops Assigning DOM references to local variables and working with the locals Using selectors API where available Caching the length when iterating ... Read more
The main difference is that apply() lets you invoke the function with arguments as an array; call() requires the parameters be listed explicitly.
Intro JavaScript Garden is a growing collection of documentation about the most quirky parts of the JavaScript programming language. It gives advice to avoid common mistakes and subtle bugs, as well as performance issues and bad practices, that non-expert JavaScript programmers may encounter on their endeavors into the depths of the language. JavaScript Garden does ... Read more
Given an integer n, write a function to return an array of size n, containing each of the numbers from 0 to n-1 in a random order. The numbers should not repeat and each number must be in array only once. Example: if n = 3, one possible array returned would be [2, 0, 1]. ... Read more
Given an array of unknown size and containing only integers between 0 to 30 (inclusive), write an algorithm to find which numbers are duplicated, if any.
Adding a prototyped method to a function Adding a prototyped method to all string objects Adding a prototyped method to all array objects Adding a prototyped method to a function Properties added in the constructor (or later) override prototyped properties Prototyped properties affect all objects of the same constructor, simultaneously, even if they already exist ... Read more
Songs: 00:00 - Climb up on my Music 04:54 - A most disgusting Song 09:43 - I think of You 13:08 - Heikki's suburbia bus tour 16:32 - Silver words? 18:36 - Sandrevan lullaby - Lifestyles 25:13 - To whom it may concern 28:35 - It started out so nice 32:36 - Halfway up the ... Read more
Why flexbox? In a nutshell, flexbox provides simpler and more flexible layout options in CSS. More specifically, it provides: Easy vertical alignment of content within a parent element. Easy reordering of content across devices and screen resolutions with the help of media queries. Easy CSS-only equal height columns for your grid-based layouts. No need to ... Read more
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