(PCC)::[How-to-use-The--=-assignment-operator-in-JavaScriptHow-to-use-decrement-the-left-hand-operator-in-JavaScript]::[js]
<!DOCTYPE html> <html> <body> <h2>The -= Operator</h2> <p id="demo"></p> <script> var x = 10; x -= 5; document.getElementById("demo").innerHTML = x; </script> </body> </html>