Question

我在html文档中有2个可拖动的div，并且在2个可拖动的文件旁边有1个可放置的div。

当你将一个可拖动的div拖到droppable div上时，droppable div会显示一些文本，而draggable div会恢复到原来的位置。

我的问题是如何根据我放在droppable div上的可拖动div来更改droppable div中的文本？

我希望这是有道理的，下面是我的代码。

非常感谢

<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<title>jQuery UI Droppable - Revert draggable position</title>
<link rel="stylesheet" href="http://code.jquery.com/ui/1.10.1/themes/base/jquery-ui.css" />
<script src="http://code.jquery.com/jquery-1.9.1.js"></script>
<script src="http://code.jquery.com/ui/1.10.1/jquery-ui.js"></script>
<style>
#draggable, #draggable2 { width: 100px; height: 100px; padding: 0.5em; float: left; margin: 10px 10px 10px 0; }
#draggable, #draggable1 { width: 100px; height: 100px; padding: 0.5em; float: left; margin: 10px 10px 10px 0; }
#droppable { width: 150px; height: 150px; padding: 0.5em; float: left; margin: 10px; }
</style>
<script>
$(function() {
$( "#draggable" ).draggable({ revert: "valid" });
$( "#draggable1" ).draggable({ revert: "valid" });
$( "#droppable" ).droppable({
activeClass: "ui-state-hover",
hoverClass: "ui-state-active",
drop: function( event, ui ) {
$( this )
.addClass( "ui-state-highlight" )
.find( "p" )
.html( "Dropped!" );
}
});
});
</script>
</head>
<body>
<div id="draggable" class="ui-widget-content">
<p>I revert when I'm dropped</p>
</div>

<div id="draggable1" class="ui-widget-content">
<p>I revert when I'm dropped</p>
</div>

<div id="droppable" class="ui-widget-header">
<p>Drop me here</p>
</div>
</body>
</html>

Answer 1

使用您提供的示例，试试这个：

$(function() {
    $( "#draggable" ).draggable({ revert: "valid" });
    $( "#draggable1" ).draggable({ revert: "valid" });
    $( "#droppable" ).droppable({
        activeClass: "ui-state-hover",
        hoverClass: "ui-state-active",
        drop: function( event, ui ) {
            $( this )
            .addClass( "ui-state-highlight" )
            .find( "p" )
            .html( ui.draggable[0].id );
        }
    });
});

样本： http://jsfiddle.net/dirtyd77/SLGdE/23/

Answer 2

您可以从draggable对象中获取ui元素的ID（拖动的元素），如下所示：

drop: function( event, ui ) {
    ui.draggable[0].id
}

Fiddle

您的完整drop回调在您的示例中将如下所示：

drop: function (event, ui) {
    $(this)
        .addClass("ui-state-highlight")
        .find("p")
        .html("Dropped! " + ui.draggable[0].id);
}

Jquery拖放以更改div内容

2 个答案:

Fiddle