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JavaScript String charCodeAt()

Last Updated on Sunday 9th Oct 2022

The String charCodeAt() method

The charCodeAt() method returns the Unicode of the character at a specified index (position) in a string.

Syntax

			
					str.charCodeAt(index)

			
	
  • Here str is a string

Parameters

The charCodeAt() method takes in

  • index – (Required) – A Number – The index (position) of the character.
  • If number is not provided, the default value is used.

Return Value

  • A number - The Unicode of the character at the specified index.

charCodeAt() returns NaN if index is negative or out of range.

Examples

Get the Unicode of the first character in a string

			
					const text = "Hello World";
const letter = text.charCodeAt(0);
console.log(letter)

			
	

Output

			
					72

			
	

Get the Unicode of the Third character in a string

			
					const text = "Hello World";
const letter = text.charCodeAt(2);
console.log(letter)

			
	

Output

			
					108

			
	

Get the Unicode of the Last character in a string

			
					const text = "Hello World";
const letter = text.charCodeAt(text.length - 1);
console.log(letter)

			
	

Output

			
					100