Inconsistent Animation Issue with jQuery Toggle for Expanding Div and Text

My expanding div functionality is almost perfect, but I've noticed that the transition when opening abruptly on divs with text. However, the closing transition is smooth. Can anyone help me make the opening transition as smooth as the closing one? Below is my code and a link to a jsFiddle demo.

How can I achieve a smoother transition effect when opening?

Demo: http://jsfiddle.net/phamousphil/s34fA/1/

HTML:

<div class="grid_6 containerExpand collapsedExp">
    <div class="headerExpand"><a href="http://www.google.com">the google</a><br /></div>
    <div class="contentExpand">
        <p>google stuff google stuff google stuff!  google stuff google stuff google stuff!  google stuff google stuff google stuff!  google stuff google stuff google stuff!</p><br />
        <p>google stuff google stuff google stuff!  google stuff google stuff google stuff!  google stuff google stuff google stuff!  google stuff google stuff google stuff!</p>
    </div>
</div>
<div class="grid_6 containerExpand collapsedExp">
    <div class="headerExpand"><a href="http://www.yahoo.com">YAHOO</a><br /></div>
    <div class="contentExpand">
        <p>Yahoo!.</p>
    </div>
</div>

CSS:

.containerExpand {
}

.headerExpand {
cursor: pointer;
}

.headerExpand:hover {
background-color: #d3d3d3;
}

.collapsedExp .headerExpand {}

.collapsedExp .headerExpand:hover {
background-color: #d3d3d3;
}

.contentExpand {
height: auto;
min-height: 100px;
overflow: hidden;
transition: all 0.3s linear;
-webkit-transition: all 0.3s linear;
-moz-transition: all 0.3s linear;
-ms-transition: all 0.3s linear;
-o-transition: all 0.3s linear;
}

.collapsedExp .contentExpand {
min-height: 0px;
height: 0px;
}

JavaScript:

$(function(){
    $('.headerExpand').click(function(){
        $(this).closest('.containerExpand').toggleClass('collapsedExp');
        $(".headerExpand").find("a").click(function(e){e.stopPropagation()});
    });
});

Answer №1

Here's a more streamlined version of your code that appears to be functioning well.

To see a demo, click here.

Your HTML:

<div class="heading">the google</div>
<div class="content">
    <p>google stuff google stuff google stuff!  google stuff google stuff google stuff!  google stuff google stuff google stuff!  google stuff google stuff google stuff!</p><br />
    <p>google stuff google stuff google stuff!  google stuff google stuff google stuff!  google stuff google stuff google stuff!  google stuff google stuff google stuff!</p>
</div>

<div class="heading">YAHOO</div>
<div class="content">
    <p>Yahoo!.</p>
</div>

Your CSS:

.heading {
    cursor: pointer;
}
.heading:hover {
    background-color: #d3d3d3;
}
.content {
    padding: 5px 10px;
}

Your jQuery:

jQuery(".content").hide();
    //toggle the componenet with class msg_body
jQuery(".heading").click(function() {
    jQuery(this).next(".content").slideToggle(300);
});

I hope this solution proves useful for you!

Answer №2

When the browser transitions, it is crucial that it understands the boundaries of each value in order to execute smooth animations. The current code dictates a transition from 0px to 100px (the min-height) as these are recognized values. After completion, the browser adjusts the size of the div to accommodate the text. Achieving the desired effect may be challenging, but there are a few options available:

  1. Adjust the height: If the content in your divs is similar in length, consider setting height: 150px (or similar) in the contentExpand class.
  2. Modify the font-size:

    .collapsedExp .contentExpand {
        min-height: 0px;
        height: 0px;
        font-size: 0;
    }

Either of these approaches could work well with a lighter design. For more robust solutions, you might explore utilizing Twitter's Bootstrap framework which offers popover features similar to this, though it may be excessive for your needs. Best of luck!

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