Number Methods

Published Aug 5, 2021Updated Oct 8, 2022
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The Number object is used to represent numbers, like 3.14, -10, or 2022, and it comes with a handful of methods that’s useful for handling with numbers.

JavaScript treats primitive values as objects when it’s executing methods and properties.

Number Methods

.isFinite()
Determines whether the passed value is a finite number.
.isInteger()
Determines whether the passed value is an integer.
.isNaN()
Determines whether the passed value is NaN.
.parseFloat()
Converts a string to a floating-point number.
.parseInt()
Converts a string into an integer.
.toExponential()
Converts a number to a string of its exponential form.
.toFixed()
Converts a number to a string of its fixed-point decimal form.
.toLocaleString()
Converts a date to a string of its language-sensitive form.
.toPrecision()
Converts a number to a string of its specified precision form.
.toString()
Converts a number to a string.

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