Writing good code is necessary — writing code that is simply human readable is a subsequent stage talent. It isn’t usually that APIs are launched whose seemingly solely helpful operate is making code extra readable, however let me introduce you to JavaScript numeric separators: an API that lets builders use underscores to make numbers extra readable!

Think about the next quantity in your code:

// No commas for numbers in JavaScript
const oneHundredThousand = 100000;

Massive numbers have all the time been tough to mentally parse for engineers, so utilizing underscores to make code extra readable is a complete win:

const oneMillion = 1_000_000; // 1000000
const decimals = 1_000_00.01_02_03 // 100000.010203

The one actual rule with numeric separators is that the quantity can not begin or finish with an underscore.

Numeric separators inside JavaScript seem to be spec creators gifting builders a function. As an engineer, I will take all I can get. You by no means cease studying on this planet of JavaScript!