# Chart with Point Addition Capability

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We have already seen the configuration used to draw a chart in Highcharts Configuration Syntax chapter.

An example of a Chart with point addition capability is given below.

## Configurations

Let us now see the additional configurations/steps taken.

## chart.events

Add a click method to the chart.event property. This method adds a new point using the x, y co-ordinate of the clicked area in the chart to the series.

```chart: {
events: {
click: function (e) {
// find the clicked values and the series
var x = e.xAxis[0].value,
y = e.yAxis[0].value,
series = this.series[0];

}
}
}
```

## Example

highcharts_dynamic_click.htm

```<html>
<title>Highcharts Tutorial</title>
</script>
<script src = "https://code.highcharts.com/highcharts.js"></script>

<body>
<div id = "container" style = "width: 550px; height: 400px; margin: 0 auto"></div>
<script language = "JavaScript">
var chart = {
type: 'scatter',
margin: [70, 50, 60, 80],

events: {
click: function (e) {
// find the clicked values and the series
var x = e.xAxis[0].value,
y = e.yAxis[0].value,
series = this.series[0];

}
}
};
var title = {
text: 'User supplied data'
};
var subtitle = {
text: 'Click the plot area to add a point. Click a point to remove it.'
};
var xAxis = {
gridLineWidth: 1,
maxZoom: 60
};
var yAxis = {
title: {
text: 'Value'
},
maxZoom: 60,

plotLines: [{
value: 0,
width: 1,
color: '#808080'
}]
};
var legend = {
enabled: false
};
var exporting = {
enabled: false
};
var plotOptions = {
series: {
lineWidth: 1,
point: {
events: {
'click': function () {
if (this.series.data.length > 1) {
this.remove();
}
}
}
}
}
};
var series = [{
data: [[20, 20], [80, 80]]
}];

var json = {};
json.chart = chart;
json.title = title;
json.subtitle = subtitle;
json.xAxis = xAxis;
json.yAxis = yAxis;
json.legend = legend;
json.exporting = exporting;
json.series = series;
json.plotOptions = plotOptions;
\$('#container').highcharts(json);
});
</script>
</body>

</html>
```

## Result

Verify the result.

highcharts_dynamic_charts.htm