jQWidgets jqxListBox dragStart Property
Last Updated :
19 Sep, 2021
jQWidgets is a JavaScript framework for making web-based applications for PC and mobile devices. It is a very powerful, optimized, platform-independent, and widely supported framework. The jqxListBox is used to illustrate a jQuery ListBox widget which comprises a list of electable elements.
The dragStart property is a callback function that is invoked whenever a drag action begins. It is of type Function and its by default value is null.
Syntax:
To set the dragStart property:
$("#jqxListBox").jqxListBox({dragStart: function (item)
{
// disable dragging of 'item2' from listbox.
if (item.label == 'item2')
return false;
// to enable dragging of item2 from listbox.
return true;
}
});
To get the dragStart property:
var dragStart = $('#jqxListBox').jqxListBox('dragStart');
Linked Files: Download jQWidgets from the link. In the HTML file, locate the script files in the downloaded folder.
<link rel=”stylesheet” href=”jqwidgets/styles/jqx.base.css” type=”text/css” />
<script type=”text/javascript” src=”scripts/jquery-1.11.1.min.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqx-all.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxcore.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxbuttons.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxscrollbar.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxlistbox.js”></script>
Example: The below example illustrates the jqxListBox dragStart property in jQWidgets.
HTML
< html >
< head >
< link rel = "stylesheet"
href = "jqwidgets/styles/jqx.base.css"
type = "text/css" />
< script type = "text/javascript"
src = "scripts/jquery-1.11.1.min.js" >
</ script >
< script type = "text/javascript"
src = "jqwidgets/jqx-all.js" >
</ script >
< script type = "text/javascript"
src = "jqwidgets/jqxcore.js" >
</ script >
< script type = "text/javascript"
src = "jqwidgets/jqxbuttons.js" >
</ script >
< script type = "text/javascript"
src = "jqwidgets/jqxscrollbar.js" >
</ script >
< script type = "text/javascript"
src = "jqwidgets/jqxlistbox.js" >
</ script >
</ head >
< body >
< center >
< h1 style = "color: green;" >
GeeksforGeeks
</ h1 >
< h3 >
jQWidgets jqxListBox
dragStart Property
</ h3 >
< div id = "jqxLB" ></ div >
< br />
< div id = "log" ></ div >
</ center >
< script type = "text/javascript" >
$(document).ready(function () {
var data =
["CS", "CSS", "C++", "Java", "Scala"];
$("#jqxLB").jqxListBox({
source: data,
allowDrop: true,
allowDrag: true,
width: "210px",
height: "100px",
dragStart: function (i) {
$("#log").text(
"Dragging item: " + i.label
);
},
});
});
</ script >
</ body >
</ html >
|
Output:
Reference: https://www.jqwidgets.com/jquery-widgets-documentation/documentation/jqxlistbox/jquery-listbox-api.htm
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