需要引入 Chart.js
<%@ page language="java" pageEncoding="UTF-8"%>
<!DOCTYPE HTML>
<html>
<head>
<title>报表</title>
<script src="js/Chart.js"></script>
</head>
<body>
< legend > 发货趋势</legend>
<canvas id="bar" height="400" width="821"></canvas>
<script>
var barChartData = {
labels : [ "7 月 20 日", "7 月 21 日", "7 月 22 日", "7 月 23 日",
"7 月 24 日", "7 月 25 日",
"7 月 26 日" ],
datasets : [ {
fillColor : "rgba(220,220,220,0.5)",
strokeColor : "rgba(220,220,220,1)",
data : [ 65, 59, 90, 81, 56, 55, 40 ]
}, {
fillColor : "rgba(151,187,205,0.5)",
strokeColor : "rgba(151,187,205,1)",
data : [ 28, 48, 40, 19, 96, 27, 100 ]
} ]
};
var ctx = document.getElementById("bar").getContext("2d");
var myNewChart = new Chart(ctx).Bar(barChartData);
//new
Chart(document.getElementById("bar").getContext("2d")).Bar(barCha
rtData);
</script>
</body>
</html>
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