The spread operator will allow you to split an array into single arguments. These arguments are those, which is the function of separate arguments.
Syntax
function myfunction(...iterableObj);
Example
Live Demo
<html>
<body>
<script>
var a, b, c, d, e, f, g;
a = [10,20];
b = "rank";
c = [30, "points"];
d = "run"
// concat method.
e = a.concat(b, c, d);
// spread operator
f = [...a, b, ...c, d];
document.write(e);
document.write("<br>"+f);
</script>
</body>
</html>