先看效果：
源代码：
<html>
<style>
#myChart1, #myChart2,#myChart3,#myChart4,#myChart5,#myChart6,
#barChart1, #barChart2,#barChart3,#barChart4,#barChart5,#barChart6
{
display: inline !important;
}
</style>
<body id="body" onload="loaded()">
<div>
<canvas id="myChart1" height="400px"></canvas>
<canvas id="myChart2" height="400px"></canvas>
<canvas id="myChart3" height="400px"></canvas>
<canvas id="myChart4" height="400px"></canvas>
<canvas id="myChart5" height="400px"></canvas>
<canvas id="myChart6" height="400px"></canvas>
</div>
<div>
<canvas id="barChart1" height="400px"></canvas>
<canvas id="barChart2" height="400px"></canvas>
<canvas id="barChart3" height="400px"></canvas>
<canvas id="barChart4" height="400px"></canvas>
<canvas id="barChart5" height="400px"></canvas>
<canvas id="barChart6" height="400px"></canvas>
</div>
</body>
<script src
<script>
function getBodyNode(){
return document.getElementById("body");
}
function loaded(){
var totalWidth = getBodyNode().clientWidth;
console.log("width in load: " + totalWidth);
var aCharts = document.getElementsByTagName("canvas");
for( var i = 0; i < aCharts.length; i++){
aCharts[i].width = totalWidth / 6.5;
}
var option = {
tooltips: {
enabled:false
},
type: "pie",
xAxisData: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
yAxisData: [12, 19, 3, 5, 2, 3],
yAxisLabel: "Number of Votes"
};
for( var i = 1; i <= 6; i++ ){
createChartOnCanvas("myChart" + i, option);
}
option.type = "bar";
for( var i = 1; i <= 6; i++ ){
createChartOnCanvas("barChart" + i, option);
}
}
/*
{
type: pie,
xAxisData: [],
yAxisData: [],
yAxisLabel: '# of Votes'
}
*/
function createChartOnCanvas(canvasId, oChartOption){
var ctx = document.getElementById(canvasId).getContext('2d');
var myChart = new Chart(ctx, {
type: oChartOption.type,
data: {
labels: oChartOption.xAxisData,
datasets: [{
label: oChartOption.yAxisLabel,
data: oChartOption.yAxisData,
backgroundColor: [
'rgba(255, 99, 132, 0.2)', 'rgba(54, 162, 235, 0.2)', 'rgba(255, 206, 86, 0.2)', 'rgba(75, 192, 192, 0.2)',
'rgba(153, 102, 255, 0.2)', 'rgba(255, 159, 64, 0.2)'
],
borderColor: [
'rgba(255,99,132,1)', 'rgba(54, 162, 235, 1)', 'rgba(255, 206, 86, 1)', 'rgba(75, 192, 192, 1)',
'rgba(153, 102, 255, 1)', 'rgba(255, 159, 64, 1)'
],
borderWidth: 1
}]
},
options: {
responsive: false,
scales: {
yAxes: [{
ticks: {
beginAtZero:true
}
}]
}
}
});
}
</script>
</html>
