add new properties to object javascript code example
Example 1: how to add property to object in javascript
var data = {
'PropertyA': 1,
'PropertyB': 2,
'PropertyC': 3
};
data["PropertyD"] = 4;
alert(data.PropertyD);
alert(data["PropertyD"]);
Example 2: add property to object javascript
let yourObject = {};
let yourKeyVariable = "yourKey";
yourObject[yourKeyVariable] = "yourValue";
yourObject["yourKey"] = "yourValue";
yourObject.yourKey = "yourValue";
Example 3: how to a property from a JavaScript object
delete myObject.regex;
delete myObject['regex'];
var prop = "regex";
delete myObject[prop];
var myObject = {
"ircEvent": "PRIVMSG",
"method": "newURI",
"regex": "^http://.*"
};
delete myObject.regex;
console.log(myObject);
Example 4: Add New Properties to a JavaScript Object
var myDog = {
"name": "Happy Coder",
"legs": 4,
"tails": 1,
"friends": ["freeCodeCamp Campers"]
};
myDog.bark = "woof";
myDog["bark"] = "woof";