css media query actions in javascript

cssmq-js.js

var queries = [{
	'match_this': 'only screen and (-webkit-min-device-pixel-ratio : 1.5), only screen and (min-device-pixel-ratio : 1.5)',
	'action': function () {
		$('.post .entry-content img').each(function (index, element) {
			$(this).attr('width', '100%');
			$(this).removeAttr('height');
		});
	}
}, {
	'match_this': 'only screen and (min-width : 321px)',
	'action': function () {
		$('.post .entry-content img').each(function (index, element) {
			$(this).attr('width', '100%');
			$(this).removeAttr('height');
		});
	}
}, {
	'match_this': 'only screen',
	'action': function () {
		console.warn('NO MQ MATCHES: RESORT TO DEFAULT');
	}
}];