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I'm trying to show and hide list elements (that I can't advice a individual class to) in a sequence, i.e. delayed.

this is my html…

<ul id="aclass">
    <?php for ($i = 0; $i < count($enties); ++$i) :
    <li class="animation">
        <div id="frame">
            &nbsp;
        </div>
    </li>
    <?php endfor; ?>
</ul>

so far I have

$(document).ready(function() {
  function showpanel() {
    $("ul#aclass > li").each(function() {
        $(this).css("display", "none");
 });
     setTimeout(showpanel, 200)
});

I want to see the first li element for two seconds, then replaced but the second one for two seconds, then the next one etc. I don't know how to select the "next" li element and to run the function on each element successively.

Thanks for help.

I'm trying to show and hide list elements (that I can't advice a individual class to) in a sequence, i.e. delayed.

this is my html…

<ul id="aclass">
    <?php for ($i = 0; $i < count($enties); ++$i) :
    <li class="animation">
        <div id="frame">
            &nbsp;
        </div>
    </li>
    <?php endfor; ?>
</ul>

so far I have

$(document).ready(function() {
  function showpanel() {
    $("ul#aclass > li").each(function() {
        $(this).css("display", "none");
 });
     setTimeout(showpanel, 200)
});

I want to see the first li element for two seconds, then replaced but the second one for two seconds, then the next one etc. I don't know how to select the "next" li element and to run the function on each element successively.

Thanks for help.

  • javascript
  • jquery
  • html
  • css
Share Improve this question asked Apr 26, 2015 at 15:25 tgifredtgifred 1091 gold badge2 silver badges8 bronze badges
Add a ment  | 

5 Answers 5

Reset to default 5

Creative solution:

  • CSS: Hide all panels except the first (with the help of :first-child)
  • jQuery: keep moving the first child to the end periodically.

$(document).ready(function() {
    var panelInterval;

    panelInterval = setInterval(function () {
        $("ul#aclass > li:first-child").appendTo("ul#aclass");
    }, 200)
});
ul#aclass > li {
  display: none;
}
ul#aclass > li:first-child {
  display: block;
}
<script src="https://ajax.googleapis./ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<ul id="aclass">
  <li>Panel 1</li>
  <li>Panel 2</li>
  <li>Panel 3</li>
  <li>Panel 4</li>
  <li>Panel 5</li>
</ul>

@tgifred In the end, I managed to find the working solution. It is like this. I hope it helps.

<html>
<head>

    <script src="https://ajax.googleapis./ajax/libs/jquery/2.1.1/jquery.min.js"></script>
</head>

<body>
<ul id="aclass">
    <li class="animate">Panel 1</li>
    <li class="animate">Panel 2</li>
    <li class="animate">Panel 3</li>
    <li class="animate">Panel 4</li>
    <li class="animate">Panel 5</li>
</ul>

<script>
    $(function() {
        var elements = $("ul#aclass  li");
        elements.hide();
        elements.each(function (i) {
            $(this).delay(2000* i++).fadeIn(2000);
        });

    });
</script>
</body>
</html>

In case you want to have visible only one element at a time, you could do something like this:

<script>
    $(function() {
        var elements = $("ul#aclass  li");
        elements.hide();
        elements.each(function (i) {
            $(this).delay(2000 * i++).fadeIn(20).fadeOut(1800);
        });

    });
</script>

And you can play with the easing.

Try using $.next().

$(document).ready(function() {

    function showpanel($toShow, $toHide) {  
        if ($toHide) {
            $toHide.hide();
        }
        $toShow.show();
        setTimeout(showpanel, 200, $toShow.next(), $toShow)
    });

    showpanel($("ul#aclass > li").hide().first())

});

You could use a recursive function with a variable that increments for each run, something like

$(document).ready(function() {
    (function showpanel(i, elems) {
        i = i === elems.length-1 ? 0 : i+1;
        elems.eq(i).show(0).delay(1000).hide(0, function() {
            showpanel(i, elems);
        });
    })(-1, $("ul#aclass > li"));
});

FIDDLE

check it out:

function showpanel(current, elems) {
    return function() {
        current = current < elems.length - 1 ? current + 1 : 0;
        elems.hide().eq(current).show();
    }
 };

setInterval(showpanel(0, $("#aclass li")), 200)

DEMO

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