当悬停在 droppable 上时,或者当 droppable 被激活(即一个可接受的 draggable 被放置在 droppable 上)时,改变 droppable 的外观。使用 hoverClass
或 activeClass
选项来分别指定 class。
当悬停在 droppable 上时的反馈:
当激活 draggable 时的反馈:
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>jQuery UI 放置(Droppable) - 视觉反馈</title>
<link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css">
<script src="//code.jquery.com/jquery-1.9.1.js"></script>
<script src="//code.jquery.com/ui/1.10.4/jquery-ui.js"></script>
<link rel="stylesheet" href="http://jqueryui.com/resources/demos/style.css">
<style>
#draggable, #draggable2 { width: 90px; height: 90px; padding: 0.5em; float: left; margin: 10px 10px 10px 0; }
#droppable, #droppable2 { width: 120px; height: 120px; padding: 0.5em; float: left; margin: 10px; }
h3 { clear: left; }
</style>
<script>
$(function() {
$( "#draggable" ).draggable();
$( "#droppable" ).droppable({
hoverClass: "ui-state-hover",
drop: function( event, ui ) {
$( this )
.addClass( "ui-state-highlight" )
.find( "p" )
.html( "Dropped!" );
}
});
$( "#draggable2" ).draggable();
$( "#droppable2" ).droppable({
accept: "#draggable2",
activeClass: "ui-state-default",
drop: function( event, ui ) {
$( this )
.addClass( "ui-state-highlight" )
.find( "p" )
.html( "Dropped!" );
}
});
});
</script>
</head>
<body>
<h3>当悬停在 droppable 上时的反馈:</h3>
<div id="draggable" class="ui-widget-content">
<p>请拖拽我到目标</p>
</div>
<div id="droppable" class="ui-widget-header">
<p>请放置在这里</p>
</div>
<h3>当激活 draggable 时的反馈:</h3>
<div id="draggable2" class="ui-widget-content">
<p>请拖拽我到目标</p>
</div>
<div id="droppable2" class="ui-widget-header">
<p>请放置在这里</p>
</div>
</body>
</html>