Question

我尝试使用Chart.js库创建折线图。我有div尺寸为600px宽，250px高度的尺寸，而我从中读到的图书库是用这些父尺寸创建折线图。

以下显示了我的HTML元素：

<div style="width:600px;height:250px">
    <canvas id="myChart"></canvas>
</div>

这是我使用的代码：

$(document).ready(function(){
     var data = {
                    labels: ["January", "February", "March", "April", "May", "June", "July"],
                    datasets: [
                        {
                            label: "My First dataset",
                            fillColor: "rgba(220,220,220,0.2)",
                            strokeColor: "rgba(220,220,220,1)",
                            pointColor: "rgba(220,220,220,1)",
                            pointStrokeColor: "#fff",
                            pointHighlightFill: "#fff",
                            pointHighlightStroke: "rgba(220,220,220,1)",
                            data: [65, 59, 80, 81, 56, 55, 40]
                        },
                        {
                            label: "My Second dataset",
                            fillColor: "rgba(151,187,205,0.2)",
                            strokeColor: "rgba(151,187,205,1)",
                            pointColor: "rgba(151,187,205,1)",
                            pointStrokeColor: "#fff",
                            pointHighlightFill: "#fff",
                            pointHighlightStroke: "rgba(151,187,205,1)",
                            data: [28, 48, 40, 19, 86, 27, 90]
                        }
                    ]
                };
                var ctx = $("#myChart").get(0).getContext("2d");
                new Chart(ctx).Line(data, {
                    responsive:true
                });
});

这显示了我在jsfiddle中遇到的问题：https://jsfiddle.net/Lr88htnp/（请注意，渲染图表的尺寸为600x300）

Answer 1

您需要将选项maintainAspectRatio设置为false

....
new Chart(ctx).Line(data, {
    responsive:true,
    maintainAspectRatio: false
});

小提琴 - https://jsfiddle.net/3cxeyLc8/

Answer 2

将以下CSS添加到#myChart：

 <canvas id="myChart" style="width:100%;height:100%;"></canvas>

Answer 3

设置宽度和高度 100% 对我有用

<LineChart :chart-data="chartData1" :options="options" style="width: 100%; height: 100%" />

Chart.js不尊重我的容器尺寸

3 个答案: