Chart.js不是高度响应
问题描述:
我有问题可以让chart.js折线图对高度和宽度做出响应。Chart.js不是高度响应
见例如它应当那样: http://www.chartjs.org/samples/latest/charts/line/basic.html
这里是我的代码:
var randomScalingFactor = function(){ return Math.round(Math.random()*100)};
var lineChartData = {
labels : ['January','February','March','April','May','June','July'],
datasets : [
{
label: 'My First dataset',
labelColor : '#fff',
fontColor : '#fff' ,
backgroundColor : 'rgba(220,220,220,0.2)',
borderColor : 'rgba(220,220,220,1)',
pointBackgroundColor : 'rgba(220,220,220,1)',
pointBorderColor : '#fff',
data : [randomScalingFactor(),randomScalingFactor(),randomScalingFactor(),randomScalingFactor(),randomScalingFactor(),randomScalingFactor(),randomScalingFactor()]
}
]
}
var options = {
maintainAspectRatio: false,
legend: {
display: false,
},
scales: {
xAxes: [{
gridLines: {
display: false,
color: '#03A5C5',
lineWidth: 8,
},
ticks: {
fontColor: "white",
},
}],
yAxes: [{
gridLines: {
display: false,
color: '#03A5C5',
lineWidth: 8,
},
ticks: {
fontColor: "white",
beginAtZero: true,
}
}]
}
};
var ctx = document.getElementById('canvas-1');
var chart = new Chart(ctx, {
responsive: true,
type: 'line',
data: lineChartData,
options: options
});
答
至于从Docs为chart.js之它的建议,以帆布包裹到div容器和改变宽度/容器的高度。但基本上它是通过给定的宽度或高度来改变的。
实测值从lannymcnie更灵活的自定义解决方案,可用于任何帆布响应:
var stage = new createjs.Stage("canvas");
var c = new createjs.Shape();
c.graphics.f("#f00").dc(0,0,50); // Drawn a 100x100 circle from the center
var t = new createjs.Text("Resize the browser/frame to redraw", "24px Arial bold", "#000");
t.x = t.y = 20;
stage.addChild(c, t);
window.addEventListener("resize", handleResize);
function handleResize() {
var w = window.innerWidth-2; // -2 accounts for the border
var h = window.innerHeight-2;
stage.canvas.width = w;
stage.canvas.height = h;
//
var ratio = 100/100; // 100 is the width and height of the circle content.
var windowRatio = w/h;
var scale = w/100;
if (windowRatio > ratio) {
scale = h/100;
}
// Scale up to fit width or height
c.scaleX= c.scaleY = scale;
// Center the shape
c.x = w/2;
c.y = h/2;
stage.update();
}
handleResize(); // First draw
html, body {
padding: 0; margin: 0;
overflow:hidden;
}
canvas {
border: 1px solid #f00;
}
<script src="https://code.createjs.com/easeljs-0.8.2.min.js"></script>
<canvas id="canvas" width="800" height="600"></canvas>
他们说在[文档](HTTP://www.chartjs。 org/docs/latest/general/responsive.html)图表有麻烦与响应。希望你会找到解决方案,因为我不能 – blewherself
在文档中,他们建议将canvas标签包装到容器div中,并将其设置为自己的宽度和高度。基本上这就是你在他们提到的响应式expample中所做的。它有助于解决你的情况? – blewherself
@blewherself它的工作!谢谢 –