LoDash map

HTML

<script src="http:////cdnjs.cloudflare.com/ajax/libs/lodash.js/2.4.1/lodash.js"></script>
<div>
    <p>Unmapped array item type: <span id="unmappedArray"></span></p>
    <p>Mapped array item type: <span id="mappedArray"></span></p>
    <p>Unmapped type: <span id="unmapped"></span></p>
    <p>Mapped type: <span id="mapped"></span></p>
</div>

JavaScript

var test = [true, false, false]
var string = '';
string += _.map(test, function (e) {
	return e ? 1 : 0;
});
console.log(string);