String includes()
In JavaScript, String.includes()
method is used to check if a search string is present in the string or not.
Syntax
str.includes(search, start)
where
str
is a string.search
is a string.start
is an integer, index position.
includes()
method returns true
if the string str
contains the specified search
string, else it returns false
. If start
is provided, the string str
from the start
position is considered for checking.
Examples
1. In the following program, we check if string value in name
contains search string 'pl'
.
let name = 'apple';
let output = name.includes('pl');
console.log(output);
2. In the following program, we check if string value in name
contains search string 'nana'
.
let name = 'apple';
let output = name.includes('nana');
console.log(output);
3. Check if string value in name
contains search string 'ap'
from a start position of 2
.
let name = 'apple';
let output = name.includes('ap', 2);
console.log(output);