The “double tilde” (~~) operator is a double NOT Bitwise operator. Use it as a substitute for Math.floor(), since it’s faster.
Example
You can try to run the following code to learn about double tilde operator −
<html> <body> <script> var a = 2; var b,c, d; b = ~~a; c = Math.floor(a); d = ~~b=== c; document.write(b); document.write("<br>"+c); document.write("<br>"+d); // They are equal </script> </body> </html>