Cut and Reverse JS Fundamentals

function cutAndReverse(str) {
    let leftHalf = '';
    let rightHalf = '';
    for (let i = str.length / 2 - 1; i >=0; i--) {
        leftHalf += '' + str[i] + '';
    }
    console.log(leftHalf);
    for (let i = str.length - 1; i >= str.length / 2; i--) {
        rightHalf += '' + str[i] + '';
    }
    console.log(rightHalf);
}