randomimage.js

<script>
	// stolen from https://electrictoolbox.com/pad-number-two-digits-javascript/
	function pad(number) {
		return (number < 10 ? '0' : '') + number;
	}

	function set_random_image(artwork_id, image_count){
		// Generate a random index
		random_index = Math.ceil(Math.random() * image_count);
		// ceil in plaats van floor zodat het niet bij 0 maar 1 begint en eindigt bij het aantal plaatjes
		
		// Select an image with the index
		padded_index = pad(random_index)
			
		// Display the image by inserting code into the html
		document.getElementById(artwork_id).src = `./img/${artwork_id}/${artwork_id}-${padded_index}.svg`
	}
		
	window.onload = function() {
		set_random_image('squares-in-orbit', 12)
	}
	</script>