includes method
The includes method performs
a case-sensitive search for a given
string within the current string. The
first parameter of the method is the
string to be found, the second
optional parameter is the position
from which to start the search. After
execution, the method returns
true or false.
Syntax
string.includes(what to search, [where to start searching]);
Example
Let's check if there is the string
'ab' in the string 'abcde':
let res = 'abcde'.includes('ab');
console.log(res);
The code execution result:
true
Example
Now let's search from the fifth character of the current string:
let res = 'ab cd ef'.includes('cd', 5);
console.log(res);
The code execution result:
false
Example
Let's do a case-sensitive search for a string:
let res = 'abcde'.includes('AB');
console.log(res);
The code execution result:
false
See also
-
the
atmethod
that searches a character by its position number in a string -
the
startsWithmethod
that checks the start of a string -
the
endsWithmethod
that checks the end of a string -
the
indexOfmethod
that searches for a substring -
the
lastIndexOfmethod
that searches for the last occurrence of a substring
