To remove a property from an object (mutating the object), you can do it like this:
delete myObject.regex; // or, delete myObject['regex']; // or, var prop = "regex"; delete myObject[prop];
Demo
var myObject = { "ircEvent": "PRIVMSG", "method": "newURI", "regex": "^http://.*" }; delete myObject.regex; console.log(myObject);
For anyone interested in reading more about it, Stack Overflow user kangax has written an incredibly in-depth blog post about the delete
statement on their blog, Understanding delete. It is highly recommended.
If you’d like a new object with all the keys of the original except some, you could use the destructuring.
Demo
let myObject = { "ircEvent": "PRIVMSG", "method": "newURI", "regex": "^http://.*" }; const {regex, ...newObj} = myObject; console.log(newObj); // has no 'regex' key console.log(myObject); // remains unchanged