I recently encountered a brain teaser that asked to take an amount of change and return the equivalent in dollars and coins. Here's the five-minute solution I first came up with. function makeChange (money) { var i, num, output = [], coins = [ [100, "dollar", "dollars" ], [25, "quarter", "quarters"], [10, "dime", "dimes" ], […]

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How many times have you needed to run multiple replacement operations on the same string? It's not too bad, but can get a bit tedious if you write code like this a lot. str = str. replace( /&(?!#?\w+;)/g , '&amp;' ). replace( /"([^"]*)"/g , '“$1”' ). replace( /</g , '&lt;' ). replace( />/g , '&gt;' […]

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