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<!DOCTYPE html>
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< html lang = "en" >
< head >
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< meta charset = "utf-8" >
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< title > jQuery UI Droppable - Prevent propagation< / title >
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< link rel = "stylesheet" href = "../../themes/base/jquery.ui.all.css" >
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< script src = "../../jquery-1.8.0.js" > < / script >
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< script src = "../../ui/jquery.ui.core.js" > < / script >
< script src = "../../ui/jquery.ui.widget.js" > < / script >
< script src = "../../ui/jquery.ui.mouse.js" > < / script >
< script src = "../../ui/jquery.ui.draggable.js" > < / script >
< script src = "../../ui/jquery.ui.droppable.js" > < / script >
< link rel = "stylesheet" href = "../demos.css" >
< style >
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#draggable { width: 100px; height: 40px; padding: 0.5em; float: left; margin: 10px 10px 10px 0; }
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#droppable, #droppable2 { width: 230px; height: 120px; padding: 0.5em; float: left; margin: 10px; }
#droppable-inner, #droppable2-inner { width: 170px; height: 60px; padding: 0.5em; float: left; margin: 10px; }
< / style >
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< script >
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$(function() {
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$( "#draggable" ).draggable();
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$( "#droppable, #droppable-inner" ).droppable({
activeClass: "ui-state-hover",
hoverClass: "ui-state-active",
drop: function( event, ui ) {
$( this )
.addClass( "ui-state-highlight" )
.find( "> p" )
.html( "Dropped!" );
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return false;
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}
});
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$( "#droppable2, #droppable2-inner" ).droppable({
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greedy: true,
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activeClass: "ui-state-hover",
hoverClass: "ui-state-active",
drop: function( event, ui ) {
$( this )
.addClass( "ui-state-highlight" )
.find( "> p" )
.html( "Dropped!" );
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}
});
});
< / script >
< / head >
< body >
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< div class = "demo" >
< div id = "draggable" class = "ui-widget-content" >
< p > Drag me to my target< / p >
< / div >
< div id = "droppable" class = "ui-widget-header" >
< p > Outer droppable< / p >
< div id = "droppable-inner" class = "ui-widget-header" >
< p > Inner droppable (not greedy)< / p >
< / div >
< / div >
< div id = "droppable2" class = "ui-widget-header" >
< p > Outer droppable< / p >
< div id = "droppable2-inner" class = "ui-widget-header" >
< p > Inner droppable (greedy)< / p >
< / div >
< / div >
< / div > <!-- End demo -->
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< div class = "demo-description" >
< p > When working with nested droppables — for example, you may have an editable directory structure displayed as a tree, with folder and document nodes — the < code > greedy< / code > option set to true prevents event propagation when a draggable is dropped on a child node (droppable).< / p >
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< / div > <!-- End demo - description -->
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< / body >
< / html >
