Generating random mock data with specific time range using javascript

You can use this for a random name generator. For a random number generator you can use Math.random() (which always returns a number between 0-1) in combination with Math.floor(). For example:

Math.floor(Math.random() * 101);  // returns a random integer from 0 to 100

For date generation see this answer

If I include the interval it should look like this:

let generated_data = []; // this will be the final data
let colors = ["Blue", "Red", "Green"]; // define all the colors you need


function getRandomInt(min, max) { // generate random number
    return Math.floor(Math.random() * (max - min)) + min;
}

function capFirst(string) { // make the first letter capital letter
    return string.charAt(0).toUpperCase() + string.slice(1);
}


function generateName(){ //generates random Name
    var name1 = ["abandoned","able","absolute","adorable"]; // you can add more elements in this list, if you want a wider choice
    var name2 = ["people","history","way","art","world"]; // you can add more elements in this list, if you want a wider choice
    var name = capFirst(name1[getRandomInt(0, name1.length)]) + ' ' + capFirst(name2[getRandomInt(0, name2.length + 1)]);
    return name;
}


function randomDate(date1, date2){ // generates random date
    var date1 = date1 || '01-01-1970'
    var date2 = date2 || new Date().toLocaleDateString()
    date1 = new Date(date1).getTime()
    date2 = new Date(date2).getTime()
    if( date1>date2){
            return new Date(getRandomInt(date2,date1)).toLocaleDateString()   
    } else{
        return new Date(getRandomInt(date1, date2)).toLocaleDateString()  
    }
}

function generateRandomObject() { // adds a random object in the objects list
    let obj = {
        Id: getRandomInt(1, 1000),
        Subject: generateName(),
        StartTime: randomDate('01/01/2000', '01/01/2020'),
        EndTime: randomDate('01/01/2000', '01/01/2020'),
        CategoryColor: colors[getRandomInt(0, colors.length)]
    }
    generated_data.push(obj);
}


setInterval(generateRandomObject, 30 * 60 * 1000); // sets an interval of 30 mins in which the function  will be executed