JSON vs Object Literals

    //JavaScript
    //Object literals (.js)
    
    let obj1 = {
        'prop1': "string",
        "prop2": 'string',
        prop3: 123,
        prop4: ['array', "value", obj2, 123],
        prop5: function(){
            console.log('message');
        },
        prop6: null,
        prop7: true
    }
    
    let obj2 = function(){
        console.log('obj2');
    }

    //JSON file (.json)
    {
        "prop1": "string",
        "prop2": "string",
        "prop3": 123,
        "prop4": ["array", "value", "obj2", 123],
        "prop5": {
            "p1": "v1",
            "p2": "v2",
            "p3": false,
            "p4": 654,
            "p5": null
        },
        "prop6": null,
        "prop7": true
    }