Nearby lessons

38 of 40

šŸ”¢ JavaScript String to Number Conversion & Number Methods

šŸ“Œ What are JavaScript Number Methods?

This section demonstrates how to convert strings and other values to numbers in JavaScript using built-in methods.

It also showcases how to work with numeric precision, validation, and formatting using various Number methods.

šŸ”ø Convert String to Number using Number()

Number() is used to convert string or boolean values into numbers.

Code Example
PREVIEW READY
Loading Editor...
Live Preview

šŸ”ø Convert Boolean to Number

Using Number(true) returns 1 and Number(false) returns 0.

Code Example
PREVIEW READY
Loading Editor...
Live Preview

šŸ”ø parseInt() Method

parseInt() converts a string to an integer by removing decimal values.

Code Example
PREVIEW READY
Loading Editor...
Live Preview

šŸ”ø parseFloat() Method

parseFloat() converts a string to a floating-point number.

Code Example
PREVIEW READY
Loading Editor...
Live Preview

šŸ”ø Number.isFinite() Method

Number.isFinite() checks whether the value is a finite number (not Infinity or NaN).

Code Example
PREVIEW READY
Loading Editor...
Live Preview

šŸ”ø Number.isInteger() Method

Number.isInteger() checks if a value is an integer.

Code Example
PREVIEW READY
Loading Editor...
Live Preview

šŸ”ø toFixed() Method

toFixed() formats a number using fixed-point notation (number of decimals).

Code Example
PREVIEW READY
Loading Editor...
Live Preview

šŸ”ø toPrecision() Method

toPrecision() formats a number to a specified length (significant digits).

Code Example
PREVIEW READY
Loading Editor...
Live Preview

🧠 Test Your Knowledge

10 Questions

Progress: 0 / 10
Keep Going!JS - Math Methods