What is NaN in JavaScript?

1.	What is NaN in JavaScript?
Answer» The double NOT Bitwise operator is a “double tilde” (~~) operator in JavaScript. Let’s SAY we have the following variable: var val1 = 3.7; var val2; Now, use the double tilde operator and assign it to another variable: val2 = ~~val1; The example to work with double tilde operator: &LT;!DOCTYPE html> <html> <body> <script> var val1 = 3.7; var val2; val2 = ~~val1; document.write(val2); </script> </body> </html> The output: 3 You can ACHIEVE the same RESULT from Math.floor() in JavaScript, but double tilde is considered faster: <!DOCTYPE html> <html> <body> <script> var val1 = 3.7; document.write(Math.floor(val1)); </script> </body> </html> The same output is VISIBLE: 3

Answer»

The double NOT Bitwise operator is a “double tilde” (~~) operator in JavaScript.

Let’s SAY we have the following variable:

var val1 = 3.7; var val2;

Now, use the double tilde operator and assign it to another variable:

val2 = ~~val1;

The example to work with double tilde operator:

&LT;!DOCTYPE html> <html> <body> <script> var val1 = 3.7; var val2; val2 = ~~val1; document.write(val2); </script> </body> </html>

The output:

You can ACHIEVE the same RESULT from Math.floor() in JavaScript, but double tilde is considered faster:

<!DOCTYPE html> <html> <body> <script> var val1 = 3.7; document.write(Math.floor(val1)); </script> </body> </html>

The same output is VISIBLE:

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