JavaScript Object getOwnPropertySymbols() Method
Last Updated :
26 May, 2023
The Object.getOwnPropertySymbols() method in JavaScript is a standard built-in object which returns an array of all symbol properties that are present in a given object. An empty array is returned until symbol properties are set on the object.
Syntax:
Object.getOwnPropertySymbols(obj)
Parameters:
- obj: This parameter is the object whose symbol properties are to be returned.
Return value: This method returns an array of all symbol properties that correspond to the properties found directly in the given object.
Below are some examples of this method
Example 1: In this example, we will check for the symbol properties of the objects using the Object.getOwnPropertySymbols() Method in Javascript.
javascript
<script>
const object1 = {};
let vala = Symbol('geek1');
let valb = Symbol.for('geek2');
object1[vala] = 'localSymbol';
object1[valb] = 'globalSymbol';
const objectSymbols = Object.getOwnPropertySymbols(object1);
console.log(objectSymbols.length);
const object2 = {};
let a = Symbol('a');
let b = Symbol.for('b');
const objectSymbols1 = Object.getOwnPropertySymbols(object2);
console.log(objectSymbols1.length);
</script>
|
Output:
2
0
Example 2: In this example, we will check for the symbol properties of the objects using the Object.getOwnPropertySymbols() Method in Javascript.
javascript
<script>
const object1 = {};
let vala = Symbol('geek1');
let valb = Symbol.for('geek2');
let valc = Symbol.for('geek3');
object1[vala] = 'localSymbol';
object1[valb] = 'globalSymbol';
object1[valc] = 'globalSymbol';
const objectSymbols = Object.getOwnPropertySymbols(object1);
console.log(objectSymbols.length);
console.log(objectSymbols);
console.log(objectSymbols[0]);
console.log(objectSymbols[2]);
console.log(objectSymbols[1]);
</script>
|
Output:
3
Array [Symbol(geek1), Symbol(geek2), Symbol(geek3)]
Symbol(geek1)
Symbol(geek3)
Symbol(geek2)
We have a complete list of Javascript Object methods, to check those please go through this JavaScript Object Complete Reference article.
Supported Browsers:
- Google Chrome 38 and above
- Edge 12 and above
- Firefox 36 and above
- Opera 25 and above
- Safari 9 and above
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