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jQWidgets is a JavaScript framework for making web-based applications for PC and mobile devices. It is a very powerful and optimized framework, platform-independent, and widely supported. jqxChart is a lightweight and powerful chart widget written 100% in javascript. It offers many advanced features and supports three different rendering technologies – SVG, HTML5 Canvas & VML.
The rangeSelectionChanging event is triggered whenever the position of the visible range selector in the displayed jqxChart is altered before the chart begins returning.
Syntax:
$('#Selector').on('rangeSelectionChanging',
function () {
// Code
});
Linked Files: Download jQWidgets from the given 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/jqxcore.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxchart.core.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxdraw.js”></script>
<script type=”text/javascript” src=”jqwidgets/jqxdata.js”></script>
Example 1: The below example illustrates the jQWidgets jqxChart rangeSelectionChanging event.
HTML
<!DOCTYPE html>
<html lang="en">
<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/jqxcore.js">
</script>
<script type="text/javascript"
src="jqwidgets/jqxchart.core.js">
</script>
<script type="text/javascript"
src="jqwidgets/jqxdraw.js">
</script>
<script type="text/javascript"
src="jqwidgets/jqxdata.js">
</script>
<script type="text/javascript"
src="jqwidgets/jqxchart.api.js">
</script>
</head>
<body>
<center>
<h1 style="color: green">
GeeksforGeeks
</h1>
<h3>jQWidgets jqxChart rangeSelectionChanging event</h3>
<div id='gfg1' style="width:400px; height: 200px" />
</center>
<center>
<div id="log"></div>
</center>
<script type="text/javascript">
$(document).ready(function () {
var json = [
{ Day: 'Monday', A: 3, B: 1, C: 2, D: 1 },
{ Day: 'Tuesday', A: 3, B: 1, C: 2, D: 1 },
{ Day: 'Wednesday', A: 3, B: 1, C: 2, D: 1 },
{ Day: 'Thursday', A: 3, B: 1, C: 2, D: 1 },
{ Day: 'Friday', A: 3, B: 1, C: 2, D: 1 },
{ Day: 'Saturday', A: 3, B: 1, C: 2, D: 1 },
{ Day: 'Sunday', A: 3, B: 1, C: 2, D: 1 }
];
var obj = {
title: "Coding Score",
description: "Coding Questions Solved Daily",
source: json,
categoryAxis: {
dataField: 'Day',
showGridLines: true
},
seriesGroups: [{
type: 'column',
columnsGapPercent: 30,
seriesGapPercent: 0,
xAxis: {
rangeSelector: true
},
valueAxis: {
minValue: 0,
maxValue: 10,
unitInterval: 10,
description: 'Questions Solved'
},
series: [
{ dataField: 'A', displayText: 'A' },
{ dataField: 'B', displayText: 'B' },
{ dataField: 'C', displayText: 'C' },
{ dataField: 'D', displayText: 'D' }
]
}]
};
$('#gfg1').jqxChart(obj);
$('#gfg1').on('rangeSelectionChanging', function () {
$('#log').text("Event Triggered!");
});
});
</script>
</body>
</html>
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Output:
Example 2: The following is another example of the jqxChart rangeSelectionChanging event in jQWidgets.
HTML
<!DOCTYPE html>
<html lang="en">
<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/jqxcore.js">
</script>
<script type="text/javascript"
src="jqwidgets/jqxchart.core.js">
</script>
<script type="text/javascript"
src="jqwidgets/jqxdraw.js">
</script>
<script type="text/javascript"
src="jqwidgets/jqxdata.js">
</script>
<script type="text/javascript"
src="jqwidgets/jqxchart.api.js">
</script>
</head>
<body>
<center>
<h1 style="color: green">
GeeksforGeeks
</h1>
<h3>jQWidgets jqxChart rangeSelectionChanging event</h3>
<div id='gfg1' style="width:400px; height: 200px" />
</center>
<center>
<div id="log"></div>
</center>
<script type="text/javascript">
$(document).ready(function () {
var json = [
{ Day: 'Monday', A: 3, B: 1, C: 2, D: 1 },
{ Day: 'Tuesday', A: 3, B: 1, C: 2, D: 1 },
{ Day: 'Wednesday', A: 3, B: 1, C: 2, D: 1 },
{ Day: 'Thursday', A: 3, B: 1, C: 2, D: 1 },
{ Day: 'Friday', A: 3, B: 1, C: 2, D: 1 },
{ Day: 'Saturday', A: 3, B: 1, C: 2, D: 1 },
{ Day: 'Sunday', A: 3, B: 1, C: 2, D: 1 }
];
var obj = {
title: "Coding Score",
description: "Coding Questions Solved Daily",
source: json,
categoryAxis: {
dataField: 'Day',
showGridLines: true
},
seriesGroups: [{
type: 'column',
columnsGapPercent: 30,
seriesGapPercent: 0,
xAxis: {
rangeSelector: true
},
valueAxis: {
minValue: 0,
maxValue: 10,
unitInterval: 10,
description: 'Questions Solved'
},
series: [
{ dataField: 'A', displayText: 'A' },
{ dataField: 'B', displayText: 'B' },
{ dataField: 'C', displayText: 'C' },
{ dataField: 'D', displayText: 'D' }
]
}]
};
$('#gfg1').jqxChart(obj);
$('#gfg1').on('rangeSelectionChanging',
function (e) {
var args = e.args;
if (args === null) {
$('#log').text("Null!");
}
else {
$('#log').text("Not Null!");
}
});
});
</script>
</body>
</html>
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Output:
Reference: https://www.jqwidgets.com/jquery-widgets-documentation/documentation/jqxchart/jquery-chart-api.htm?search=
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.gif){kind=small}
