JavaScript Tutorial

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Javascript Remove Property from Object

In this tutorial, we will learn how to delete a property of an object using the inbuilt delete function in JavaScript. The delete function removes a property from an object and returns true if the operation is successful. We will give two examples to demonstrate how to use the delete function. In the first example, we will create a simple object with three properties and delete one of them. In the second example, we will create an array of objects and delete a property from each object using a loop.

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Remove Property from Object Javascript

<button onclick="deleteProperty()">Delete Property</button>
<script>
 let shop = {
  number: '1',
  location: 'America',
  vacancy: '34'
 };

 function deleteProperty() {
  let beforeDeletion = JSON.stringify(shop);
  document.getElementById('beforeDeletion').textContent = beforeDeletion;
  delete shop.vacancy;
 }
 ntent = JSON.stringify(shop);
</script>undefined</body>undefined</html>

Run

Output of Javascript delete object property

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Javascript Remove Property From Array of Object

<button onclick="deleteProperty('city')">Delete City Property</button>
<script>
let arrayOfObjects = [{
    name: 'John',
    age: 30,
    city: 'New York'
   }, {
    name: 'Alice',
    age: 25,
    city: 'San Francisco'
   }, {
    name: 'Bob',
    age: 35,
    city: 'Seattle'
   }];

   function deleteProperty(propertyToDelete) {
    arrayOfObjects.forEach(obj => {
     delete obj[propertyToDelete];
    });
   }
</script>

Run

Before Delete

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After Delete

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JavaScript Tutorial

Javascript Remove Property from Object

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Remove Property from Object Javascript

Output of Javascript delete object property

Javascript Remove Property From Array of Object