Use the Number() method in JavaScript to convert to Number. You can try to run the following code to learn how to convert -Infinity Number in JavaScript.
Example
<!DOCTYPE html> <html> <body> <p>Convert -Infinity to Number</p> <script> var myVal = -Infinity; document.write("Number : " + Number(myVal)); </script> </body> </html>
Output
Convert -Infinity to Number Number : -Infinity