Same Numbers

function sameNumber(input) {
    let isTrue = false
    let sum = 0;
    input = input.toString().split("").map(Number)
    let checker = input[0]
    for (let i = 0; i < input.length; i++) {
        if (checker === input[i]) {
            isTrue = true
        } else {
            isTrue = false
        }
        sum += input[i]
    }
    console.log(isTrue)
    console.log(sum)
}