$(function () {
var highAverage = 60.8,
lowAverage = 53,
highAverageColor = "#ff9b52",
lowAverageColor = "#6199e6";
$("#chart").dxChart({
dataSource: dataSource,
series: [{
argumentField: "day",
valueField: "temperature",
type: "spline",
color: "#a3aaaa"
}],
valueAxis: {
label: {
customizeText: customizeText
},
strips: [{
label: {
text: "Above average",
font: {
color: highAverageColor
}
},
startValue: highAverage,
color: "rgba(255,155,85,0.15)"
},
{
label: {
text: "Below average",
font: {
color: lowAverageColor
}
},
endValue: lowAverage,
color: "rgba(97,153,230,0.1)"
}],
stripStyle: {
label: {
font: {
weight: 500,
size: 14
}
}
}
},
"export": {
enabled: true
},
title: "Temperature in September",
legend: {
visible: false
},
customizePoint: function () {
if (this.value > highAverage) {
return { color: highAverageColor };
} else if (this.value < lowAverage) {
return { color: lowAverageColor };
}
},
customizeLabel: function () {
if (this.value > highAverage) {
return getLabelsSettings(highAverageColor);
} else if (this.value < lowAverage) {
return getLabelsSettings(lowAverageColor);
}
}
});
function customizeText() {
return this.valueText + "°F";
}
function getLabelsSettings(backgroundColor) {
return {
visible: true,
backgroundColor: backgroundColor,
customizeText: customizeText
};
}
});
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>DevExtreme Demo</title>
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0" />
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script>window.jQuery || document.write(decodeURIComponent('%3Cscript src="js/jquery.min.js"%3E%3C/script%3E'))</script>
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.2.5/css/dx.common.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.2.5/css/dx.light.css" />
<script src="https://cdn3.devexpress.com/jslib/20.2.5/js/dx.all.js"></script>
<script src="data.js"></script>
<link rel="stylesheet" type="text/css" href="styles.css" />
<script src="index.js"></script>
</head>
<body class="dx-viewport">
<div class="demo-container">
<div id="chart"></div>
</div>
</body>
</html>
#chart {
height: 440px;
}
var dataSource = [{ temperature: 52, day: "1" },
{ temperature: 57, day: "2" },
{ temperature: 58, day: "3" },
{ temperature: 56, day: "4" },
{ temperature: 59, day: "5" },
{ temperature: 59, day: "6" },
{ temperature: 56, day: "7" },
{ temperature: 62, day: "8" },
{ temperature: 57, day: "9" },
{ temperature: 54, day: "10" },
{ temperature: 52, day: "11" },
{ temperature: 58, day: "12" },
{ temperature: 53, day: "13" },
{ temperature: 54, day: "14" },
{ temperature: 57, day: "15" },
{ temperature: 61, day: "16" },
{ temperature: 58, day: "17" },
{ temperature: 63, day: "18" },
{ temperature: 64, day: "19" },
{ temperature: 52, day: "20" }
];