lib/Add Element to Start of an Array.js
// Add Element to Array Using concat()
Add Element to Array Using concat()
Add Element to Array Using concat ()
function addElement(arr) {
    arr = [4].concat(arr);
    console.log(arr);
}
function addElement ( arr ) { arr = [ 4 ] . concat ( arr ) ; console . log ( arr ) ; }
Add Element to Array Using concat()
Add Element to Array Using concat ()
// adding element to array