test.js

document.ready(){
  // Smooth Scroll for home page
	var buttons = ["#topbtn", "#whyusbtn"];
	var anchors = ["header", ".propellingAnchor"];

	for (let i = 0; i<anchors.length; i++) {
		document.querySelector(buttons[i]).addEventListener('click', function(e){
			e.preventDefault();
			document.querySelector(anchors[i]).scrollIntoView({
				behavior: "smooth"
			})
		})
	}
}