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38 of 40š¢ JavaScript String to Number Conversion & Number Methods
š 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.
šø Convert String to Number using Number()
Number() is used to convert string or boolean values into numbers.
Code Example
šø Convert Boolean to Number
Using Number(true) returns 1 and Number(false) returns 0.
Code Example
šø parseInt() Method
parseInt() converts a string to an integer by removing decimal values.
Code Example
šø parseFloat() Method
parseFloat() converts a string to a floating-point number.
Code Example
šø Number.isFinite() Method
Number.isFinite() checks whether the value is a finite number (not Infinity or NaN).
Code Example
šø Number.isInteger() Method
Number.isInteger() checks if a value is an integer.
Code Example
šø toFixed() Method
toFixed() formats a number using fixed-point notation (number of decimals).
Code Example
šø toPrecision() Method
toPrecision() formats a number to a specified length (significant digits).