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Javascript Object getOwnPropertyDescriptor() Method

Javascript Object getOwnPropertyDescriptor() Method with example on javascript, object, getOwnPropertyDescriptor(), getOwnPropertyDescriptors(), defineProperties(), defineProperty(), entries(), freeze(), javascript tutorial, javascript array etc.

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JavaScript Object.getOwnPropertyDescriptor() Method

The Object.getOwnPropertyDescriptor method allows to query the full information about a property and returns a property descriptor for an own property (that is, one directly present on an object and not in the object's prototype chain) of a given object.

Syntax:

bject.getOwnPropertyDescriptor(obj, prop)

Parameter

obj: It is the object in which to look for the property.

Prop: It is the name of the property whose description is to be retrieved.

Return value:

It returns a property descriptor of the given property if it exists on the object.

Browser Support:

Chrome 4
Edge Yes
Firefox 12
Opera 4

Example 1

const object1 = {
  property1: 42
}
const object2 = {
  property2: 34
}
const descriptor1 = Object.getOwnPropertyDescriptor(object1, 'property1');
const descriptor2 = Object.getOwnPropertyDescriptor(object2, 'property2');
console.log(descriptor1.enumerable);
console.log(descriptor2.enumerable);
console.log(descriptor1.value);
console.log(descriptor2.value);

Output:

true
true
42
34

Example 2

const object1 = {
  property1: 42
}
const descriptor1 = Object.getOwnPropertyDescriptor(object1, 'property1');
console.log(descriptor1.configurable);
console.log(descriptor1.enumerable);
console.log(descriptor1.value);

Output:

true
true
42

Example 3

const object1 = {
  property1: 56
}
const descriptor1 = Object.getOwnPropertyDescriptor(object1, 'property1');
console.log(descriptor1.writable);
console.log(descriptor1.value);

Output:

true
56

Next TopicJavaScript Objects




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