關於Chart.js
Chart.js是一款彈性很高的圖表JavaScript library,支援八種常見的統計圖表類型,夠將圖表混合在一起使用,也支援動畫的效果,讓我們製作出來的圖表更加精美!
範例一 格線顏色與多線條

var config = {
type: 'line',
data: {
labels: ['January', 'February', 'March', 'April', 'May', 'June', 'July'],
datasets: [{
label: 'My First dataset',
backgroundColor: window.chartColors.red,
borderColor: window.chartColors.red,
data: [10, 30, 39, 20, 25, 34, -10],
fill: false,
}, {
label: 'My Second dataset',
fill: false,
backgroundColor: window.chartColors.blue,
borderColor: window.chartColors.blue,
data: [18, 33, 22, 19, 11, 39, 30],
}]
},
options: {
responsive: true,
title: {
display: true,
text: 'Grid Line Settings'
},
scales: {
yAxes: [{
gridLines: {
drawBorder: false,
color: ['pink', 'red', 'orange', 'yellow', 'green', 'blue', 'indigo', 'purple']
},
ticks: {
min: 0,
max: 100,
stepSize: 10
}
}]
}
}
};
window.onload = function() {
var ctx = document.getElementById('canvas').getContext('2d');
window.myLine = new Chart(ctx, config);
};