Ultra compact Bootstrap breakpoint detection with jQuery (Dirty)

breakpoint-detection.js

var cw, pcw;
$(window).on('load resize', function () {
	// get width as int
	cw = parseInt($('.container').css('width'));

	// make 'current !== previous' equation easier
	if (cw < 750) {cw = 'xs';}

	// execute breakpoint-specific action if the current container width is not the same as the previous one
	if (cw !== pcw) {
		if (cw === 'xs') {
			console.log('xs');
		} else if (cw === 750) {// default bs value,change if needed (and look back up a bit ;))
			console.log('sm');
		} else if (cw === 970) {
			console.log('md');
		} else if (cw === 1170) {
			console.log('lg');
		};
	};
	
	// current container width becomes previous one
	pcw = cw;
});