The Javascript check string contains method is also useful for searching for specific words or phrases within a larger string. This can be very useful when validating user input, for example.

This type of string manipulation can come in handy when programming a web page, as it allows you to quickly check if a given string contains other specific strings. Javascript check string contains is a method for determining if a given string contains a specific substring. What is Javascript Check String Contains? But how do you know if a particular string contains a specific substring in Javascript? Let’s explore this topic in detail and review the Javascript syntax for checking strings. Note: In this example, we haven't used the second parameter (starting_index).Javascript is one of the most popular programming languages out there, used to create dynamic and interactive web content. Here in this example, we will make a string 's1' and then by using the includes() method, we will find if the string 'SCALER' is present in the string s1 or not. There are no exceptions in the string includes() function in javascript. Exceptions of String includes() in Javascript It returns true if the set of characters(string) that is being searched is found in the original string, else it returns false. The string includes() method in javascript returns boolean values only. Return Value of String includes() in Javascript

By default, the value of the starting index is zero. Name_of_the_string.includes(search_string) name_of_the_string.includes(search_string, starting_index) Parameters of String Includes() in Javascriptįor the parameter of string includes() function in javascript, we use the 'set of characters'(string) that we want to search and the second parameter is optional that is, the starting index (the index from where the search will begin in the original string).

Javascript string includes