Lodash

by findango

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.4/lodash.js"></script>
<script>
function stringify(value) {
	return typeof value === 'object'
    	? JSON.stringify(value, null, 2)
        : value;
}

function log() {
    var args = Array.prototype.slice.call(arguments, 0);
    document.getElementById('output').innerHTML += args.map(stringify).join(" ") + "\n";
}
</script>

<pre id="output"></pre>

JavaScript

log(_.isEmpty([]));
log(_.isEmpty({}));
log(_.isEmpty());
log(_.isEmpty(null));

log(_.isEmpty([1, 2,3]));
log(_.isEmpty({a: 1, b: 2}));