Untitled

<html>
<head>

<script>
	let colors = ["green", "blue", "red", "orange", "purple", "white", "gray", "brown", "black", "magenta"];

function remove(idx) {
	console.log("remove(" + idx + ")");

}

</script>
<head>

	<body>
<ul>
<li id="0">green<button onClick="remove(0);">-</button></li>
<li id="1">blue<button onClick="remove(1);">-</button></li>
<li id="2">red<button onClick="remove(2);">-</button></li>
</ul>
</body>