Lodash.js – groupBy() function
By Bartłomiej Bartel
A simple Lodash.js example of the groupBy() function, which groups the initial values under the resulting keys.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0">
<meta name="description" content="Tizen Angular.js example"/>
<title>Tizen lodash.js example</title>
<script src="js/lodash.min.js"></script>
</head>
<body>
<div id="first">
</div>
<br>
<div id="second">
</div>
<script>
var firstDiv = document.getElementById('first');
var secondDiv = document.getElementById('second');
var firstValue = [3.2,2.4,2.6,2.8];
firstDiv.innerHTML = "Having the object: " + firstValue + " will group the initial values under the resulting keys...";
var result = _.groupBy(firstValue, function(num) {
return Math.ceil(num);
});
secondDiv.innerHTML = "... we get: " + result + " and in it:";
Object.keys(result).forEach(function (key) {
document.write("<br>key from result: " + key + ", values which pass the condition: " + result[key]);
});
</script>
</body>
</html>