A simple equation input with bracket completion and highlighting.
Uses jquery. And needs styling.
Does not work for IE < 9
Usage: Load jquey.eqInput.js and jquery.eqInput.css
<div id="eq-input"></div>
To add a place holder use data-placeholder attribute
<div id="eq-input" data-placeholder="Insert formula"></div>
$('#eq-input').eqInput();
To change the highlight color and styling edit css or supply custom class
$('#eq-input').eqInput({highlightClass: 'some-custom-class'})
Use text method to get input contents