JSFiddle - React, Tailwind, and code Playground

JavaScript

var JSON_Object = {
"Diabites": [
    {
        "Day1": [
            {
                "Breakfast": [
                    {
                        "food1": "Bread",
                        "food2": "Tea",
                        "food3": "Edd"
                    }
                ]
            },
            {
                "Lunch": [
                    {
                        "food1": "Bread",
                        "food2": "Tea",
                        "food3": "Edd"
                    }
                ]
            },
            {
                "Dinner": [
                    {
                        "food1": "Bread",
                        "food2": "Tea",
                        "food3": "Edd"
                    }
                ]
            }
        ]
    },
    {
        "Day2": [
            {
                "Breakfast": [
                    {
                        "food1": "Bread",
                        "food2": "Tea",
                        "food3": "Edd"
                    }
                ]
            },
            {
                "Lunch": [
                    {
                        "food1": "Bread",
                        "food2": "Tea",
                        "food3": "Edd"
                    }
                ]
            },
            {
                "Dinner": [
                    {
                        "food1": "Bread",
                        "food2": "Tea",
                        "food3": "Edd"
                    }
                ]
            }
        ]
    }
]
};

    for(var i=0;i<JSON_Object.Diabites.length;i++) {
        
        for(var key in JSON_Object.Diabites[i]) {
        
          //key will be Day1,Day2 etc.
          alert(key);
          alert(JSON_Object.Diabites[i][key].length);
        
        }
        
    }