var data = { 'PropertyA': 1, 'PropertyB': 2, 'PropertyC': 3 }; data["PropertyD"] = 4; // dialog box with 4 in it alert(data.PropertyD); alert(data["PropertyD"]);
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);
var myDog = { "name": "Happy Coder", "legs": 4, "tails": 1, "friends": ["freeCodeCamp Campers"] }; myDog.bark = "woof"; // or myDog["bark"] = "woof";