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JavaScript - String charAt() method example
4 points
xxxxxxxxxx1
var text = 'abc';2
console.log( text.charAt( 0) ); // a3
4
console.log( 'abc'.charAt(0) ); // a5
console.log( 'abc'.charAt(1) ); // b6
console.log( 'abc'.charAt(2) ); // c7
8
console.log( text.charAt() ); // a9
console.log( text.charAt(-1) == '' ); // true10
console.log( text.charAt(10) == '' ); // true11
console.log( text.charAt(null) ); // a| Syntax | String.prototype.charAt(index) |
| Parameters | index - integer number value (primitive value). |
| Result | Character from index position (primitive value). |
| Description | charAt takes only one parameter and return single character from index position inside string. |
Bracket operator is alternative approach to get specific character from string.
xxxxxxxxxx1
var text = 'abc';2
3
console.log( text[0] ); // a4
console.log( text[1] ); // b5
console.log( text[2] ); // c6
7
console.log( text[-1] ); // undefined8
console.log( text[10] ); // undefined9
console.log( text[null] ); // undefined