Array functions and the rule of least power | Jesse Duffield

The various array methods in JavaScript can be thought of on a scale of power, or really flexibility. At the top end you've got the for loop, at the bottom the highly-specific functions .every and .some. Jesse makes the argument that you should always choose the least powerful option and I agree. The article is also just a generally excellent overview of array manipulation in JavaScript.

Circle chart showing how each array function can effectively be nested in those more powerful, with the for loop around them all, then "for each", reduce, both map and filter at the same level, and within filter find, then every and same together.
An incredibly useful reference guide to array functions.

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  • <p>The various array methods in JavaScript can be thought of on a scale of&nbsp;<em>power</em>, or really flexibility. At the top end you've got the for loop, at the bottom the highly-specific functions …</p>
  • Murray Adcock.
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