To remove a property from a JavaScript object, use the delete keyword, which is also called delete operator.
Example
You can try to run the following code to learn how to remove a property −
<!DOCTYPE html> <html> <body> <p id="demo"></p> <script> var cricketer = { name:"Amit", rank:1, points: 400 }; deletecricketer.rank; document.getElementById("demo").innerHTML= cricketer.name + "has " + cricketer.rank + " rank."; </script> </body> </html>