Create Your Own Custom JavaScript Dollar Function To Select An Element
The "dollar" function has become famous in recent years due to its inception in many popular JavaScript frameworks. MooTools, for example, uses the dollar function to select a single element from the DOM. This functionality is extremely helpful as it allows you to keep your code extremely short and readable, not to mention document.getElementById(''); can get annoying quickly.
The Code
function $(id)
{
return document.getElementById(id);
}
You don't need to use a JavaScript framework to compact your code. If you frequently select unique DOM elements, you should create a dollar function for the sake of yourself and your users.
![9 More Mind-Blowing WebGL Demos]()
With Firefox OS, asm.js, and the push for browser performance improvements, canvas and WebGL technologies are opening a world of possibilities. I featured 9 Mind-Blowing Canvas Demos and then took it up a level with 9 Mind-Blowing WebGL Demos, but I want to outdo...
![Detect DOM Node Insertions with JavaScript and CSS Animations]()
I work with an awesome cast of developers at Mozilla, and one of them in Daniel Buchner. Daniel's shared with me an awesome strategy for detecting when nodes have been injected into a parent node without using the deprecated DOM Events API.
![Redacted Font]()
Back when I created client websites, one of the many things that frustrated me was the initial design handoff. It would always go like this:
Work hard to incorporate client's ideas, dream up awesome design.
Create said design, using Lorem Ipsum text
Send initial design concept to the client...
![Implementing Basic and Fancy Show/Hide in MooTools 1.2]()
One of the great parts of MooTools is that the library itself allows for maximum flexibility within its provided classes. You can see evidence of this in the "Class" class' implement method. Using the implement method, you can add your own methods to...
To cut the number of
getElementById()calls in half, you could just do:function $(id) { return document.getElementById(id); }Hi, lets make it smaller ^^
function $(i) { return document.getElementById(i); }Can you just do:
? I didn’t test this.
This function returns null and does not work when I do
$('x').style.background='orange';function $(e) { if(e.substring(0,1) == '#') { return document.getElementById(e.substring(1)); } else { return document.getElementByClass(e.substring(1)); } }