Array & function

Source

<script>
var category = ["역사", "인류진화", "HTML5"];
document.getElementById("self").innerHTML = category;
document.getElementById("toString").innerHTML = category.toString();
var x = category.pop();  
var y = category.push("Java"); 
document.getElementById("pp).innerHTML = "pop : "+x+ " , push : "+y;
document.getElementById("join").innerHTML = category.join(" * ");
</script>

Result

JavaScript Arrays