Underscores as number separators

Underscores as number separators

Making calculations with longer numbers? You can improve readability by using underscores (_) in numeric primitives:

// Hard to read:
Math.floor(Math.random() * 1000000); // 337083

// Better
Math.floor(Math.random() * 1_000_000); // 337083

1_000_000 === 1000000 // true

The underscore doesn't have to be placed where a comma would go - it can be used anywhere in the number except at the very beginning or end. Just a small way to improve your code and prevent errors!

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