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
