JavaScript Symbol @@toPrimitive() Method

The symbol.@@toPrimitive() is an inbuilt method in JavaScript which is used to converts a given symbol object to a primitive value. Syntax:

Symbol()[Symbol.toPrimitive](hint);

Here Symbol() is the symbol object whose primitive value is to be found. Parameters: This method accepts an optional parameter "hint". 

Return value: This method returns the primitive value of the given symbol object. JavaScript code to show the working of this method. 

Example-1: 

// Some symbol objects are created
const symbol1 = Symbol('Geeks');
const symbol2 = Symbol("Geeks");
const symbol3 = Symbol(123);
const symbol4 = Symbol();

// Calling the symbol.@@toPrimitive() method
let result1 = symbol1[Symbol.toPrimitive]("Value");
let result2 = symbol2[Symbol.toPrimitive]("String");
let result3 = symbol3[Symbol.toPrimitive](789);
let result4 = symbol4[Symbol.toPrimitive]();

// Getting the primitive value
console.log(result1);
console.log(result2);
console.log(result3);
console.log(result4);

Output:

> Symbol(Geeks)
> Symbol(Geeks)
> Symbol(123)
> Symbol()

In the above code, it can be seen that the optional argument "hint" can be value, string, any integer value etc. Example-2: 

// a symbol object is created
const symbol = Symbol('gfg');

// Calling the symbol.@@toPrimitive() method
let result = symbol[Symbol.toPrimitive];

// Getting the primitive value
console.log(result);

Output:

> function [Symbol.toPrimitive]() { [native code] }

In the above code, it can be seen that the parentheses should be used for "hint" argument otherwise it gives the result like above output. Supported Browsers:

• Google Chrome 47 and above
• Firefox 44
• Edge 15 and above
• Opera 34 and above
• Apple Safari 10 and above

Reference: https://devdocs.io/javascript/global_objects/symbol/@@toprimitive