The JavaScript string substr() method retrieves the part of the given string on the basis of the specified starting position and length. The original string will not be modified.
Syntax:
string.substr(position, length)
Parameters:
position: It represents the position of the string from where the string retrieves starts.
length: It represents the number of characters to be retrieved.
Return:
It will return a substring from the specified string.
Example:
<!DOCTYPE html> <html> <body> <script> var a ="HELLO WORLD!"; document.write(a.substr(0,5)); </script> </body> </html>