How to Toggle a div's visibility by using a button click

Question

Below is my javascript code which i used to show a div when clicked on a button.

How can I hide it when clicked again? And then on clicking it, div should be visible again?

<script type="text/javascript">
var _hidediv = null;
function showdiv(id) {
    if(_hidediv)
        _hidediv();
    var div = document.getElementById(id);
    div.style.display = 'block';
    _hidediv = function () { div.style.display = 'none'; };
}
</script>

Answer 1

In case you are interested in a jQuery soluton:

This is the HTML

<a id="button" href="#">Show/Hide</a>
<div id="item">Item</div>

This is the jQuery script

$( "#button" ).click(function() {
    $( "#item" ).toggle();
});

You can see it working here:

http://jsfiddle.net/BQUyT/

If you don't know how to use jQuery, you have to use this line to load the library:

<script src="http://code.jquery.com/jquery-1.10.1.min.js"></script>

And then use this line to start:

<script>
$(function() {
    // code to fire once the library finishes downloading.
});
</script>

So for this case the final code would be this:

<script>
$(function() {
    $( "#button" ).click(function() {
        $( "#item" ).toggle();
    });
});
</script>

Let me know if you need anything else

You can read more about jQuery here: http://jquery.com/