let timelineColor = getRamdomColor();
let clickDay;
let clickDay1;

for (i = 0; i < dayArray.length; i++) {
    if (dayArray[i] === 'monday') {
        clickDay = 'mon' + timeArray[i];
        let table = document.getElementById(clickDay);
        table.style.backgroundColor = timelineColor;
        clickDay1 = 'mon' + (Number(timeArray[i]) + 1);
        console.log(clickDay1);
        let table1 = document.getElementById(clickDay1);
        table1.style.backgroundColor = timelineColor;
    } else if (dayArray[i] === 'tuesday') {
        clickDay = 'tue' + timeArray[i];
        let table = document.getElementById(clickDay);
        table.style.backgroundColor = timelineColor;
        clickDay1 = 'tue' + (Number(timeArray[i]) + 1);
        let table1 = document.getElementById(clickDay1);
        table1.style.backgroundColor = timelineColor;
    } else if (dayArray[i] === 'wednesday') {
        clickDay = 'wed' + timeArray[i];
        let table = document.getElementById(clickDay);
        table.style.backgroundColor = timelineColor;
        clickDay1 = 'wed' + (Number(timeArray[i]) + 1);
        let table1 = document.getElementById(clickDay1);
        table1.style.backgroundColor = timelineColor;
    } else if (dayArray[i] === 'thursday') {
        clickDay = 'tur' + timeArray[i];
        let table = document.getElementById(clickDay);
        table.style.backgroundColor = timelineColor;
        clickDay1 = 'tur' + (Number(timeArray[i]) + 1);
        let table1 = document.getElementById(clickDay1);
        table1.style.backgroundColor = timelineColor;
    } else if (dayArray[i] === 'friday') {
        clickDay = 'fri' + timeArray[i];
        let table = document.getElementById(clickDay);
        table.style.backgroundColor = timelineColor;
        clickDay1 = 'fri' + (Number(timeArray[i]) + 1);
        let table1 = document.getElementById(clickDay1);
        table1.style.backgroundColor = timelineColor;
    }
}