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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 Draggable - Events< / 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 >
< link rel = "stylesheet" href = "../demos.css" >
< style >
#draggable { width: 16em; padding: 0 1em; }
#draggable ul li { margin: 1em 0; padding: 0.5em 0; } * html #draggable ul li { height: 1%; }
#draggable ul li span.ui-icon { float: left; }
#draggable ul li span.count { font-weight: bold; }
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< / style >
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< script >
$(function() {
var $start_counter = $( "#event-start" ),
$drag_counter = $( "#event-drag" ),
$stop_counter = $( "#event-stop" ),
counts = [ 0, 0, 0 ];
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$( "#draggable" ).draggable({
start: function() {
counts[ 0 ]++;
updateCounterStatus( $start_counter, counts[ 0 ] );
},
drag: function() {
counts[ 1 ]++;
updateCounterStatus( $drag_counter, counts[ 1 ] );
},
stop: function() {
counts[ 2 ]++;
updateCounterStatus( $stop_counter, counts[ 2 ] );
}
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});
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function updateCounterStatus( $event_counter, new_count ) {
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// first update the status visually...
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if ( !$event_counter.hasClass( "ui-state-hover" ) ) {
$event_counter.addClass( "ui-state-hover" )
.siblings().removeClass( "ui-state-hover" );
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}
// ...then update the numbers
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$( "span.count", $event_counter ).text( new_count );
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}
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});
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< / script >
< / head >
< body >
< div class = "demo" >
< div id = "draggable" class = "ui-widget ui-widget-content" >
< p > Drag me to trigger the chain of events.< / p >
< ul class = "ui-helper-reset" >
< li id = "event-start" class = "ui-state-default ui-corner-all" > < span class = "ui-icon ui-icon-play" > < / span > "start" invoked < span class = "count" > 0< / span > x< / li >
< li id = "event-drag" class = "ui-state-default ui-corner-all" > < span class = "ui-icon ui-icon-arrow-4" > < / span > "drag" invoked < span class = "count" > 0< / span > x< / li >
< li id = "event-stop" class = "ui-state-default ui-corner-all" > < span class = "ui-icon ui-icon-stop" > < / span > "stop" invoked < span class = "count" > 0< / span > x< / li >
< / ul >
< / div >
< / div > <!-- End demo -->
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< div class = "demo-description" >
< p > Layer functionality onto the draggable using the < code > start< / code > , < code > drag< / code > , and < code > stop< / code > events. Start is fired at the start of the drag; drag during the drag; and stop when dragging stops.< / p >
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< / div > <!-- End demo - description -->
< / body >
< / html >
