我正在尝试管理droppable
中jqueryui
类别的“限制”功能。
这是下面的当前页。除一个项目外,每个类别中只有一个项目,当我单击最后一个项目:Item 8
时,所有类别都将突出显示,这表示我可以将项目8拖放到所需的任何droppable
类别中。
我要为每个droppable
类别分配一个限制,以确保没有其他项目可以放到那些类别中。假设限制为1
。在这种情况下,仅应突出显示空白的dropabble
类别,并且必须仅将该项目放在该类别中。当我单击Item 8
时,预期输出应为:
我该如何管理?任何帮助将不胜感激。
到目前为止,我的代码在下面。
HTML:
<div id="draggable" class="ui-widget-content">
<ul id="selectable" style="margin-top:2.5px">
<li id="selectable1" class="ui-widget-content">Item 1</li>
<li id="selectable2" class="ui-widget-content">Item 2</li>
<li id="selectable3" class="ui-widget-content">Item 3</li>
<li id="selectable4" class="ui-widget-content">Item 4</li>
<li id="selectable5" class="ui-widget-content">Item 5</li>
<li id="selectable6" class="ui-widget-content">Item 6</li>
<li id="selectable7" class="ui-widget-content">Item 7</li>
<li id="selectable8" class="ui-widget-content">Item 8</li>
</ol>
</div>
<div style="width: 800px; height: 100px; float: left; margin-top: 60px;">
<fieldset>
<legend style="color:blue;font-weight:bold;">Schedules</legend>
<table>
<tr>
<td>JAN 1 AM:</td>
<td><div id="droppable" class="ui-widget-header"></div></td>
<td><div id="droppable2" class="ui-widget-header"></div></td>
<td><div id="droppable3" class="ui-widget-header"></div></td>
<td><div id="droppable4" class="ui-widget-header"></div></td>
</tr>
<tr>
<td>JAN 1 PM:</td>
<td><div id="droppable5" class="ui-widget-header"></div></td>
<td><div id="droppable6" class="ui-widget-header"></div></td>
<td><div id="droppable7" class="ui-widget-header"></div></td>
<td><div id="droppable8" class="ui-widget-header"></div></td>
</tr>
</table>
</fieldset>
</div>
JavaScript:
<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<script>
$( function() {
$( "#selectable1" ).draggable();
$( "#selectable2" ).draggable();
$( "#selectable3" ).draggable();
$( "#selectable4" ).draggable();
$( "#selectable5" ).draggable();
$( "#selectable6" ).draggable();
$( "#selectable7" ).draggable();
$( "#selectable8" ).draggable();
$( "#droppable" ).droppable({
hoverClass: "hover",
activate: function() {
$('#droppable').css({
border: "1px dashed red",
backgroundColor: "yellow"
});
},
deactivate: function() {
$('#droppable').css("border", "").css("background-color", "");
}
});
...
...
...
$( "#droppable8" ).droppable({
hoverClass: "hover",
activate: function() {
$('#droppable8').css({
border: "1px dashed red",
backgroundColor: "yellow"
});
},
deactivate: function() {
$('#droppable8').css("border", "").css("background-color", "");
}
});
});
答案 0 :(得分:1)
您可以定义drop
事件并添加limit
和counter
变量,并在如下所示的drop事件函数中对其进行控制。
// I just randomly filled limit values
var limits = {
"droppable1" : 3,
"droppable2" : 4,
"droppable3" : 5,
"droppable4" : 3,
"droppable5" : 4,
"droppable6" : 5,
"droppable7" : 3,
"droppable8" : 4
};
var counters = {
"droppable1" : 0,
"droppable2" : 0,
"droppable3" : 0,
"droppable4" : 0,
"droppable5" : 0,
"droppable6" : 0,
"droppable7" : 0,
"droppable8" : 0
};
$('div[id^="droppable"]').each(function() {
var key = $(this).attr('id');
$(this).droppable({
hoverClass: "hover",
activate: function() {
$(this).css({
border: "1px dashed red",
backgroundColor: "yellow"
});
},
deactivate: function() {
$(this).css("border", "").css("background-color", "");
},
drop: function() {
counters[key]++;
if (counters[key] == limits[key]) {
$(this).droppable("disable");
$(this).css("border", "").css("background-color", "");
}
}
});
});