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Get Clearer Code With Underscore.js’s Chaining Syntax

Recently, I was looking for a way to do a task N times in JavaScript (like Ruby's N.times method), which I found (_.times) in the Underscore.js library. This discovery exposed me to an alternate way to call the Underscore methods, using its chaining syntax.

If you do a lot of work with Backbone, this syntax will be familiar. In Backbone, you can call many of the Underscore methods on models and collections:

But what might not be obvious is that if you want to iterate over an object with Underscore, you can do the following:

Which is the same as doing this:

This becomes beneficial if you're working on a Backbone project and have a non-Backbone object that you want to iterate over. Going from collection.each(function(){}) to _.each(objs, function(){}) can be jarring, while _(objs).each(function(){}) is less confusing due to its similiarity.

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