Danilo Rago Danilo Rago - 7 months ago 17
Javascript Question

Collapsing Tree with Table in HTML starting closed

I'm using the code in this example http://jsfiddle.net/Vd5BH/5/ and I want to start the tables with the collapsing closed, but I dont have idea on how to do this.
Somebody know?
Link http://jsfiddle.net/Vd5BH/5/
Thanks a lot!

HTML

<table id="mytable">
<tr data-depth="0" class="collapse level0">
<td><span class="toggle collapse"></span>Item 1</td>
<td>123</td>
</tr>
<tr data-depth="1" class="collapse level1">
<td><span class="toggle"></span>Item 2</td>
<td>123</td>
</tr>
<tr data-depth="2" class="collapse level2">
<td>Item 3</td>
<td>123</td>
</tr>
<tr data-depth="1" class="collapse level1">
<td>Item 4</td>
<td>123</td>
</tr>
<tr data-depth="0" class="collapse collapsable level0">
<td><span class="toggle collapse"></span>Item 5</td>
<td>123</td>
</tr>
<tr data-depth="1" class="collapse collapsable level1">
<td>Item 6</td>
<td>123</td>
</tr>
</table>


STYLE

table td {
border: 1px solid #eee;
}
.level1 td:first-child {
padding-left: 15px;
}
.level2 td:first-child {
padding-left: 30px;
}

.collapse .toggle {
background: url("http://mleibman.github.com/SlickGrid/images/collapse.gif");
}
.expand .toggle {
background: url("http://mleibman.github.com/SlickGrid/images/expand.gif");
}
.toggle {
height: 9px;
width: 9px;
display: inline-block;
}


JAVASCRIPT

$(function() {
$('#mytable').on('click', '.toggle', function () {
//Gets all <tr>'s of greater depth
//below element in the table
var findChildren = function (tr) {
var depth = tr.data('depth');
return tr.nextUntil($('tr').filter(function () {
return $(this).data('depth') <= depth;
}));
};

var el = $(this);
var tr = el.closest('tr'); //Get <tr> parent of toggle button
var children = findChildren(tr);

//Remove already collapsed nodes from children so that we don't
//make them visible.
//(Confused? Remove this code and close Item 2, close Item 1
//then open Item 1 again, then you will understand)
var subnodes = children.filter('.expand');
subnodes.each(function () {
var subnode = $(this);
var subnodeChildren = findChildren(subnode);
children = children.not(subnodeChildren);
});

//Change icon and hide/show children
if (tr.hasClass('collapse')) {
tr.removeClass('collapse').addClass('expand');
children.hide();
} else {
tr.removeClass('expand').addClass('collapse');
children.show();
}
return children;
});
});

Answer

Add $('.toggle').click(); as the last item inside $(document).ready().

See the revised jsFiddle

        //Change icon and hide/show children
        if (tr.hasClass('collapse')) {
            tr.removeClass('collapse').addClass('expand');
            children.hide();
        } else {
            tr.removeClass('expand').addClass('collapse');
            children.show();
        }
        return children;
    });
    $('.toggle').click();
});