There are several ways to convert a string to a number (integer) in JavaScript.
let number = "100"
+number
number*1
parseInt(number)
Number(number)
// and so on...
What is the difference between these methods and when to use them?
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Tolotra Raharison
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1`+`, `Number` and `*1` are all exactly equivalent. – Bergi Jun 21 '19 at 14:19
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1Use `parseInt(number, 10)`. Tricks like `+` and `*1` are just trying to save characters; be explicit and intent-revealing instead. – jonrsharpe Jun 21 '19 at 14:19
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1First two equivalent. `parseInt` allows invalid number strings and stops at first non-numeric, `Number(s)` doesn't. – Dave Newton Jun 21 '19 at 14:19
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@DaveNewton ugh I forgot that `parseInt` will take as much number as it can! That's a good point. – jonrsharpe Jun 21 '19 at 14:22