我试图在 chartjs 条形图中显示一些数据。但是当我动态(很多)获取数据时,chartjs 无法响应操作。我该如何解决?
我的代码如下:
//html canvas :
<div id="ProductChartsDiv" height="300" style="width:100%; height:300px; ">
<canvas id="ProductkChart"></canvas>
</div>
//js chart display code:
function displayChartData(chartData, dataType, chartCanvasName,chartCanvasDivName)
{
$(chartCanvasName).remove();
chartCanvasName = chartCanvasName.split('#').join('');
$(chartCanvasDivName).append('<canvas id="' + chartCanvasName + '" ></canvas>');
ctx = document.getElementById(chartCanvasName);
var mylabels = [];
var valuesdatas = [];
var mybackgroundColors = [];
var myborderColors = [];
ctx.height = 400;
var myLineChart = new Chart(ctx, { options: { responsive: true, maintainAspectRatio: false} });
// myLineChart.clear();
myLineChart.destroy();
var randRgbaColor = random_rgba();
for (var data in chartData)
{
if (dataType == "elementB") {
mybackgroundColors.push("#3e95cd");
myborderColors.push("#3e95cd");
mylabels.push(chartData[data].ProductionElementB);
valuesdatas.push(chartData[data].productionPointB);
}
else if (dataType == "elementA")
{
mybackgroundColors.push("#3e95cd");
myborderColors.push("#3e95cd");
mylabels.push(chartData[data].ProductionElementA);
valuesdatas.push(chartData[data].productionPointA);
}
}
myLineChart = new Chart(ctx,
{
type: 'bar',
data: {
labels: mylabels,
datasets: [
{
label: dataType+ " Production",
data: valuesdatas,
backgroundColor: mybackgroundColors,
borderColor: myborderColors,
hoverBackgroundColor: "rgba(255,99,132,0.4)",
hoverBorderColor: "rgba(255,99,132,1)",
borderWidth: 1
}
]
},
options: {
responsive: true,
maintainAspectRatio: false,
scales:
{
yAxes: [
{
ticks: {
steps: 2,
max: 200,
min:0
}
}
]
},
title: {
display: true,
text: ' '
}
}
});
myLineChart.update();
}
//sample call function :
displayChartData(data.prodcutionList, "elementA", "#ProductkChart", "#ProductChartsDiv");
一些标签无法显示,图表更小取决于数据大小是否更大。小数据,一切看起来都不错,但更多数据开始变小,图表大小无法响应。怎么可能反应灵敏?