Read searching string in javascript for more information.

More "Try it Yourself" examples below. Definition and Usage. The search()
method searches a string for a specified value, and returns the position of the
The search() method executes a search for a match between a regular
expression and this String object.
searching string in javascript
The indexOf() method returns the position of the first occurrence of a specified
value in a string. This method returns -1 if the value to search for never occurs.
The is an inbuilt function in JavaScript which is used to search for
a match in between regular expressions and a given string object. Syntax :
Covers JavaScript methods for searching strings: indexOf, lastIndexOf, search,
and the regular expression test method.
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JavaScript String search() Method – Learn Javascript in simple and easy steps
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