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jQuery children a href click does not work

I have this code:

<html>
<head>
<title>site</title>

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.6.1/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript">
$(document).ready(function() {
    $('#wlink a').click(function() {
        $('.box:visible').fadeOut('fast', function() {
            $('#' + (this.id).replace('link', '')).fadeIn('fast');
        });
        $('#wlink a').removeClass('selected');
        $(this).addClass('selected');
    });
    $('#wlink div').click(function() {
        var child = $(this).children();
        child.click();
    });
    $('#linkbox1').addClass('selected');
    $('#box1').fadeIn('fast');
});
</script>
</head>

<style>
a { outline: none; cursor: pointer; }
#wrapper { border:1px solid #cccccc; border:solid 1px #ddd; width:806px; height:255px; overflow: hidden; }
#wrapperBox { width:6000px; }
span.text { font-size:100px; color:#aaa; }
div.box { float:left; width:805px; height:255px; background:#efefef; display: none; }
#wlink div { width: 200px; text-align:center; display: block; float:left; border: solid 1px #ddd; }
a.selected { background: #eee; }
</style>

<body>
<div id="wrapper">
    <div id="wrapperBox">
        <div id="box1" class="box">
            <span class="text">Box 1</span>
        </div>
        <div id="box2" class="box">
            <span class="text">Box 2</span>
        </div>
        <div id="box3" class="box">
            <span class="text">Box 3</span>
        </div>
        <div id="box4" class="box">
            <span class="text">Box 4</span>
        </div>
    </div>
</div>
<div id="wlink">
    <div><a id="linkbox1">Box 1</a></div>
    <div><a id="linkbox2">Box 2</a></div>
    <div><a id="linkbox3">Box 3</a></div>
    <div><a id="linkbox4">Box 4</a></div>
</div>
</body>
</html>

Now what I want to do is when the parent DIV of the A HREF is clicked, I want to simulate an HREF click. But it does not work, and I get this error:

too much recursion
[Break On This Error] )});return}if(e.nodeType===3||e.nodeTy...nt=="undefined"&&(b=b.ownerDocument|| 

What is wrong with my code?

Thanks, J

like image 961
Tech4Wilco Avatar asked Sep 15 '11 13:09

Tech4Wilco


3 Answers

sillyMunky is correct in that your div click handler will also be fired, creating an infinite loop, but his approach to solving this issue is not best practice. What you want to do is explicitly stop event propagation with e.stopPropagation() in your click handler and not return false. Using return false will do more than you need/intend. If you also want to prevent the default click action and stop the page jump, you'll also want to add e.preventDefault().

$('#wlink a').click(function(e) {
    e.stopPropagation();
    e.preventDefault(); //not part of fixing your issue, but you may want it.
    $('.box:visible').fadeOut('fast', function() {
        $('#' + (this.id).replace('link', '')).fadeIn('fast');
    });
    $('#wlink a').removeClass('selected');
    $(this).addClass('selected');
});

For more info: Stop (Mis)using Return False

like image 171
Adam Terlson Avatar answered Nov 18 '22 23:11

Adam Terlson


@Adam Terlson has a good solution if you don't want to change your code. Here's my solution:

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>site</title>

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.6.1/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript">
$(document).ready(function() {
$('#wlink a').click(function() {
    var l = (this.id).replace('link', '');
    $('.box:visible').fadeOut('fast', function() {
        $('#' + l).fadeIn('fast');
    });
    $('#wlink a').removeClass('selected');
    $(this).addClass('selected');
});
$('#linkbox1').addClass('selected');
$('#box1').fadeIn('fast');
});
</script>

</head>

<style>
a { outline: none; }
#wrapper { border:1px solid #cccccc; border:solid 1px #ddd; width:806px; height:255px; overflow: hidden; }
#wrapperBox { width:6000px; }
span.text { font-size:100px; color:#aaa; }
div.box { float:left; width:805px; height:255px; background:#efefef; display: none; }
a.linkBox { cursor: pointer; width: 200px; text-align:center; display: block; float:left; border: solid 1px #ddd; }
a.selected { background: #eee; }
</style>

<body>

<div id="wrapper">
   <div id="wrapperBox">
       <div id="box1" class="box">
           <span class="text">Box 1</span>
       </div>
       <div id="box2" class="box">
           <span class="text">Box 2</span>
       </div>
       <div id="box3" class="box">
           <span class="text">Box 3</span>
       </div>
       <div id="box4" class="box">
           <span class="text">Box 4</span>
       </div>
   </div>
</div>
<div id="wlink">
   <a class="linkBox" id="linkbox1">Box 1</a>
   <a class="linkBox" id="linkbox2">Box 2</a>
   <a class="linkBox" id="linkbox3">Box 3</a>
   <a class="linkBox" id="linkbox4">Box 4</a>
</div>

</body>
</html>

It does not invoked any of the previous answered but rather use HREF without DIVs and use CSS to do the magic. This way, you don't have to select childrens, parents etc...

like image 29
Book Of Zeus Avatar answered Nov 19 '22 00:11

Book Of Zeus


It is enough to add return false; to the end of the anchor's click handler. The problem seems to be that the click handler being fired is then bubbling up to the div which contains it making an infinite recursive loop. Adding the return false will prevent both the event propagating (reaching up the hierarchy to parent elements) and the default action being performed (following the link if it was clicked).

You could do this using the individual functions of the event object (e.stopPropagation and e.preventDefault respectively) if you prefer, however you are more likely (in my experience) to have problems in your target browsers doing this than doing both at once with the return false; technique.

 $('#wlink a').click(function() {
    $('.box:visible').fadeOut('fast', function() {
        $('#' + (this.id).replace('link', '')).fadeIn('fast');
    });
    $('#wlink a').removeClass('selected');
    $(this).addClass('selected');
    return false;
 })
like image 15
sillyMunky Avatar answered Nov 18 '22 23:11

sillyMunky