remove property from object JS
var person = {"first_name": "Billy","last_name": "Johnson"};
delete person.last_name; //delete last_name propertyremove property from object JS
var person = {"first_name": "Billy","last_name": "Johnson"};
delete person.last_name; //delete last_name propertyhow to add property to object in javascript
var data = {
'PropertyA': 1,
'PropertyB': 2,
'PropertyC': 3
};
data["PropertyD"] = 4;
// dialog box with 4 in it
alert(data.PropertyD);
alert(data["PropertyD"]);add property to object javascript
let yourObject = {};
//Examples:
//Example 1
let yourKeyVariable = "yourKey";
yourObject[yourKeyVariable] = "yourValue";
//Example 2
yourObject["yourKey"] = "yourValue";
//Example 3
yourObject.yourKey = "yourValue";how to a property from a JavaScript object
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);Add New Properties to a JavaScript Object
var myDog = {
"name": "Happy Coder",
"legs": 4,
"tails": 1,
"friends": ["freeCodeCamp Campers"]
};
myDog.bark = "woof";
// or
myDog["bark"] = "woof";add property with value in js
var myObject = {
sProp: 'some string value',
numProp: 2,
bProp: false
};Copyright © 2021 Codeinu
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