LET LOOP

			
The CSS
			<style>
				#box {
					display: flex;
					justify-content: space-around;
				}

				#box &ht; div {
					height: 5em;
					width: 5em;
					background-color: purple;
				}
			</style>

			
The JavaScript code
			var div;
			var box = document.getElementById("box");

			for (let i=0; i<5; i++) {
				div = document.getElementById("")
				div.onclick = function() {
					"This is box # " + i);
				}
				box.appendChild(div);
			}
		</script>