使用Chart.js在网页上画图的学习
提供网站：http://www.bootcss.com/p/chart.js/docs/
HTML练习代码，对于IE,只支持IE8及以上版本：
需要自己在网上下载Chart.min.js，excanvas.js ，jquery-1.8.2.min.js
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>Index</title>
<script src="~/Scripts/jquery-1.8.2.min.js"></script>
<script src="~/Scripts/Chart.min.js"></script>
<!--[if lte IE 8]>
<script src="~/Scripts/excanvas.js"></script>
<![endif]-->
<script type="text/javascript">
var randomScalingFactor = function () { return Math.round(Math.random() * 100) };//生成随机数字
var lineChartData = {
labels: ["January", "February", "March", "April", "May", "June", "July"],//图上的各点（X坐标）
datasets: [
{
label: "My First dataset",
fillColor: "rgba(220,220,220,0.2)",
strokeColor: "rgba(220,220,220,1)",
pointColor: "rgba(220,220,220,1)",
pointStrokeColor: "#fff",
pointHighlightFill: "#fff",
pointHighlightStroke: "rgba(220,220,220,1)",
data: [40, 45, 50, 30, 20, 10, 0]//趋势图，线上各点的值（Y坐标）
},
{
label: "My Second dataset",
fillColor: "rgba(151,187,205,0.2)",
strokeColor: "rgba(151,187,205,1)",
pointColor: "rgba(151,187,205,1)",
pointStrokeColor: "#fff",
pointHighlightFill: "#fff",
pointHighlightStroke: "rgba(151,187,205,1)",
data: [25, 30, 35, 50, 65, 68, 80]//趋势图，线上各点的值（Y坐标）
}
]
}
//画趋势图
var chart1 = function () {
var ctx = document.getElementById("canvas").getContext("2d");
window.myLine = new Chart(ctx).Line(lineChartData, {
responsive: true
});
}
//百分比分布（环形）图数据
var doughnutData = [
{
value: 300,
color: "#F7464A",
highlight: "#FF5A5E",
label: "Red"
},
{
value: 50,
color: "#46BFBD",
highlight: "#5AD3D1",
label: "Green"
},
{
value: 100,
color: "#FDB45C",
highlight: "#FFC870",
label: "Yellow"
},
{
value: 40,
color: "#949FB1",
highlight: "#A8B3C5",
label: "Grey"
},
{
value: 120,
color: "#4D5360",
highlight: "#616774",
label: "Dark Grey"
}
];
//画百分比分布（环形）图
var chart2 = function () {
var ctx = document.getElementById("canvas").getContext("2d");
window.myDoughnut = new Chart(ctx).Doughnut(doughnutData, { responsive: true });
};
//柱状图数据
var barChartData = {
labels: ["January", "February", "March", "April", "May", "June", "July"],
datasets: [
{
fillColor: "rgba(220,220,220,0.5)",
strokeColor: "rgba(220,220,220,0.8)",
highlightFill: "rgba(220,220,220,0.75)",
highlightStroke: "rgba(220,220,220,1)",
data: [randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor()]
},
{
fillColor: "rgba(151,187,205,0.5)",
strokeColor: "rgba(151,187,205,0.8)",
highlightFill: "rgba(151,187,205,0.75)",
highlightStroke: "rgba(151,187,205,1)",
data: [randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor()]
}
]
}
//画柱状图
var chart3 = function () {
var ctx = document.getElementById("canvas").getContext("2d");
window.myBar = new Chart(ctx).Bar(barChartData, {
responsive: true
});
};
//百分比分布图数据(饼状)
var pieData = [
{
value: 300,
color: "#F7464A",
highlight: "#FF5A5E",
label: "Red"
},
{
value: 50,
color: "#46BFBD",
highlight: "#5AD3D1",
label: "Green"
},
{
value: 100,
color: "#FDB45C",
highlight: "#FFC870",
label: "Yellow"
},
{
value: 40,
color: "#949FB1",
highlight: "#A8B3C5",
label: "Grey"
},
{
value: 120,
color: "#4D5360",
highlight: "#616774",
label: "Dark Grey"
}
];
//画百分比分布图(饼状)
var chart4 = function () {
var ctx = document.getElementById("canvas").getContext("2d");
window.myPie = new Chart(ctx).Pie(pieData);
};
//扇形图数据
var polarData = [
{
value: 300,
color: "#F7464A",
highlight: "#FF5A5E",
label: "Red"
},
{
value: 50,
color: "#46BFBD",
highlight: "#5AD3D1",
label: "Green"
},
{
value: 100,
color: "#FDB45C",
highlight: "#FFC870",
label: "Yellow"
},
{
value: 40,
color: "#949FB1",
highlight: "#A8B3C5",
label: "Grey"
},
{
value: 120,
color: "#4D5360",
highlight: "#616774",
label: "Dark Grey"
}
];
//画扇形图
var chart5 = function () {
var ctx = document.getElementById("canvas").getContext("2d");
window.myPolarArea = new Chart(ctx).PolarArea(polarData, {
responsive: true
});
};
//多边形数据对比图数据
var radarChartData = {
labels: ["Eating", "Drinking", "Sleeping", "Designing", "Coding", "Cycling", "Running"],
datasets: [
{
label: "My First dataset",
fillColor: "rgba(220,220,220,0.2)",
strokeColor: "rgba(220,220,220,1)",
pointColor: "rgba(220,220,220,1)",
pointStrokeColor: "#fff",
pointHighlightFill: "#fff",
pointHighlightStroke: "rgba(220,220,220,1)",
data: [65, 59, 90, 81, 56, 55, 40]
},
{
label: "My Second dataset",
fillColor: "rgba(151,187,205,0.2)",
strokeColor: "rgba(151,187,205,1)",
pointColor: "rgba(151,187,205,1)",
pointStrokeColor: "#fff",
pointHighlightFill: "#fff",
pointHighlightStroke: "rgba(151,187,205,1)",
data: [28, 48, 40, 19, 96, 27, 100]
}
]
};
//画多边形数据对比图
var chart6 = function () {
window.myRadar = new Chart(document.getElementById("canvas").getContext("2d")).Radar(radarChartData, {
responsive: true
});
};
$(function () {
chart4();
})
</script>
</head>
<body>
<div style="width:30%">
<div>
<canvas id="canvas" height="450" width="600"></canvas>
</div>
</div>
</body>
</html>
饼状图显示效果：
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