I do not understand why this is was so difficult to figure out.
You'll need Underscore.js to play along at home.
Start with an array like
var sizes = [4, 1, 10, 8];
If you just use JavaScript's built in .sort()
method, you'll end up with
sizes.sort();
// results in [1, 10, 4, 8]
This is because it sorts lexicographically by default. Why? Because it (doesn't) love you.
Here's how to do it using Underscore's sortBy
method:
sizes = _.sortBy( sizes, function( val ){ return val; } );
// results in [1, 4, 8, 10]
Why does this work? I'm not sure. Ask your dad.
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