如何通过单击按钮来切换 div 的可见性

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

To switch the display-style between block and none you can do something like this:

function toggleDiv(id) {
    var div = document.getElementById(id);
    div.style.display = div.style.display == "none" ? "block" : "none";
}

working demo: http://jsfiddle.net/BQUyT/2/

Answer 2

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/

Answer 3

jQuery would be the easiest way if you want to use it, but this should work.

function showHide(){
    var e = document.getElementById('e');

    if ( e.style.display !== 'none' ) {
        e.style.display = 'none';
    } else {
        e.style.display = '';
    }
}

Answer 4

Try following logic:

<script type="text/javascript">
function showHideDiv(id) {
    var e = document.getElementById(id);
    if(e.style.display == null || e.style.display == "none") {
        e.style.display = "block";
    } else {
        e.style.display = "none";
    }
}
</script>

Answer 5

You can easily do it with jquery toggle. By this toggle or slideToggle you will get nice animation and effect also.

 $(function(){ $("#details_content").css("display","none"); $(".myButton").click(function(){ $("#details_content").slideToggle(1000); }) })

 <div class="main"> <h2 class="myButton" style="cursor:pointer">Click Me</h2> <div id="details_content"> <h1> Lorem Ipsum is simply dummy text</h1> <p> of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book.</p> </div> </div>

Answer 6

使用 JQuery .toggle()你可以轻松完成

$( ".target" ).toggle();

Answer 7

Bootstrap 4 provides the Collapse component for that. It's using JavaScript behind the scenes, but you don't have to write any JavaScript yourself.

This feature works for <button> and <a> .

If you use a <button> , you must set the data-toggle and data-target attributes:

<button type="button" data-toggle="collapse" data-target="#collapseExample">
  Toggle
</button>
<div class="collapse" id="collapseExample">
  Lorem ipsum
</div>

If you use a <a> , you must use set href and data-toggle :

<a data-toggle="collapse" href="#collapseExample">
  Toggle
</a>
<div class="collapse" id="collapseExample">
  Lorem ipsum
</div>