window.chartColors = {
	red: 'rgb(255, 99, 132)',
	orange: 'rgb(255, 159, 64)',
	yellow: 'rgb(255, 205, 86)',
	green: 'rgb(75, 192, 192)',
	blue: 'rgb(54, 162, 235)',
	purple: 'rgb(153, 102, 255)',
	grey: 'rgb(201, 203, 207)'
};

var config = {
	type: 'line',
	data: {
		labels: ["0秒","5秒","10秒","15秒","20秒","25秒","30秒","35秒","40秒","45秒","50秒","55秒","60秒","65秒","70秒","75秒","80秒","85秒","90秒","95秒","100秒","105秒","110秒","115秒","120秒"],
		datasets: [{
			label: '瞬时速度',
			backgroundColor: window.chartColors.orange,
			borderColor: window.chartColors.orange,
			data: [0,48,36,132,36,132,108,48,0,72,96,84,96,108,48,-12,72,84,192,132,96,120,120,0,108],
			fill: false,
		}]
	},
	options: {
		responsive: true,
		title: {
			display: false,
			text: '打字速度曲线'
		},
		tooltips: {
			mode: 'index',
			intersect: false,
		},
		hover: {
			mode: 'nearest',
			intersect: true
		},
		scales: {
			xAxes: [{
				display: true,
				scaleLabel: {
					display: true,
					labelString: '时间'
				}
			}],
			yAxes: [{
				display: true,
				scaleLabel: {
					display: true,
					labelString: '速度'
				}
			}]
		}
	}
};


window.onload = function() {
	var ctx = document.getElementById('canvas').getContext('2d');
	window.myLine = new Chart(ctx, config);
};