If both the bits are 1, then 1 is returned when Bitwise AND (&) operator is used.
Example
You can try to run the following code to learn how to work with JavaScript Bitwise AND Operator −
<!DOCTYPE html> <html> <body> <script> document.write("Bitwise AND Operator<br>"); // 7 = 00000000000000000000000000000111 // 1 = 00000000000000000000000000000001 document.write(7 & 1); </script> </body> </html>