js-anim.js

    function animate(obj, initVal, lastVal, duration) {

        let startTime = null;

        //get the current timestamp and assign it to the currentTime variable

        let currentTime = Date.now();

        //pass the current timestamp to the step function

        const step = (currentTime ) => {

        //if the start time is null, assign the current time to startTime

            if (!startTime) {
            startTime = currentTime ;
            }

        //calculate the value to be used in calculating the number to be displayed

            const progress = Math.min((currentTime  - startTime) / duration, 1);

        //calculate what to be displayed using the value gotten above

            obj.innerHTML = Math.floor(progress * (lastVal - initVal) + initVal);

        //checking to make sure the counter does not exceed the last value(lastVal)

            if (progress < 1) {
                window.requestAnimationFrame(step);
            }
        };

        //start animating
        window.requestAnimationFrame(step);
    }

let text1 = document.getElementById('0101');
let text2 = document.getElementById('0102');
let text3 = document.getElementById('0103');

const load = () =>{

    animate(text1, 0, 907, 5000);
    animate(text2, 0, 432, 5000);
    animate(text3, 100, 12, 5000);

}