The JavaScript Symbol.search property finds out the index within a string that matches with the regular expression.
Syntax:
[Symbol.search](string)
Parameters:
string: It represents the string that matches against the regular expression.
Returns:
Index of the specified string with a match.
Example 1:
<!DOCTYPE html> <html> <body> <script> class obj { constructor(a) { this.a = a; } [Symbol.search](string) { return string.indexOf(this.a); } } document.write('HELLO'.search(new obj('O'))); </script> </body> </html>
Example 2:
<!DOCTYPE html> <html> <body> <script> class Searchtest { constructor(value) { this.value = value; } [Symbol.search](string) { return string.indexOf(this.value); } } document.write('w3schools'.search(new Searchtest('java'))); </script> </body> </html>