Using Underscore.js To Split an Array By Groups

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While working on a project today, I had to split an array of JSON objects into separate arrays based on one of the object's properties. Underscore.js makes this easy. In the example below, I'm splitting the sections array into a new, multidimensional array called regions.

var regions = _.toArray(_.groupBy(sections, function(section) {
              return section.region;
            }));

Here's an example of the output logged to the browser's console:

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