Run results for: JSON.stringify vs structuredClone ++

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/111.0.0.0 Safari/537.36

Browser: Chrome 111

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
JSON.stringify + parse	280695.3 Ops/sec
structuredClone	299157.1 Ops/sec

Script Preparation code:

var MyObject = {
    description: 'Creates a deep copy of source, which should be an object or an array.',
    myNumber: 123456789,
    myDate: new Date(),
    myNullishVar: null,
    myUndefinedProp: undefined,
    myInfiniteVar: Infinity,
    myBoolean: true,
    jayson: {
        stringify: 'JSON.stringify() method converts a JavaScript value to a JSON string....',
        parse: 'JSON.parse() method parses a JSON string...'
    }
};

var myCopy = null;

Tests:

JSON.stringify + parse
myCopy = JSON.parse(JSON.stringify(MyObject));
structuredClone
myCopy = structuredClone(MyObject);

Run results for: JSON.stringify vs structuredClone ++

JSON.stringify + parse

structuredClone