The jQuery search() method is used to check whether a string contains a substring in JavaScript.
You can try to run the following code to check whether the string “Tutorialspoint: Free Video Tutorial” contains a substring “point” in JavaScript:
<html> <head> <title>JavaScript String search() Method</title> </head> <body> <script> var re = "point"; var str = "Tutorialspoint: Free Video Tutorials"; if ( str.search(re) == -1 ) { document.write("Does not contain Point" ); } else { document.write("Contains Point!" ); } </script> </body> </html>