JavaScript object get value by key | Example code

Use dot notation property to get the object get value by key in JavaScript. obj["a"] is equivalent to obj.a so use obj[name] you get “A“.

var obj = {
   a: "A",
   b: "B",
   c: "C"
}

console.log(obj.a); // return string : A

JavaScript objects get value by key

Simple example code.

    var myObject = {
      'DateOfBirth' : '06/11/1978',
      'Phone' : '770-786',
      'Email' : '[email protected]' ,
      'Ethnicity' : 'Declined' ,
      'Race' : 'OtherRace'
    };

    var race = myObject.Race;
    console.log(race)

Output:

If the Objects are inside an array var ArrayValues = [{object}, {object}, ...]; then regular array accessors will work:

var raceName = ArrayValues[0].Race;

Or, if you want to loop over the values:

for (var i = 0; i < ArrayValues.length; i++) {
    var raceName = ArrayValues[i].Race;
}

Or use

const person = {
  name: 'Bob',
  age: 47
}

Object.keys(person).forEach((key) => {
  console.log(person[key]); // 'Bob', 47
});

Source: stackoverflow.com

Get JS object keys

ar myObj = {name:'John',age:45}
    
var keys = Object.keys(myObj);

console.log(keys)

Output: [ “name”, “age” ]

Do comment if you have any doubts or suggestions on this Js object topic.

Note: The All JS Examples codes are tested on the Firefox browser and the Chrome browser.

OS: Windows 10

Code: HTML 5 Version