3๐
โ
If I understand correctly, then you are after something like this :
var myLineChart, c = 0, label = 0, randomnum, interval;
function renderchart() {
var ctx = document.getElementById("bettingarea").getContext('2d');
myLineChart = new Chart(ctx, {
type: 'line',
data: {
labels: ["1", "2", "3", "4"],
datasets: [{
label: 'Crash Graph',
data: [5.44, 5.67, 5.94, 6.12],
backgroundColor: [
'rgba(255, 99, 132, 0.2)',
'rgba(54, 162, 235, 0.2)',
'rgba(255, 206, 86, 0.2)',
'rgba(75, 192, 192, 0.2)',
'rgba(153, 102, 255, 0.2)',
'rgba(255, 159, 64, 0.2)'
],
borderColor: [
'rgba(255,99,132,1)',
'rgba(54, 162, 235, 1)',
'rgba(255, 206, 86, 1)',
'rgba(75, 192, 192, 1)',
'rgba(153, 102, 255, 1)',
'rgba(255, 159, 64, 1)'
],
borderWidth: 1
}]
},
options: {
scales: {
yAxes: [{
ticks: {
beginAtZero: false
}
}]
}
}
});
}
function updateChart(chart) {
randomnum = Math.floor(Math.random() * (1000 - 100) + 100) / 100;
chart.data.labels = [];
chart.data.datasets[0].data = [];
interval = setInterval(function() {
if (c < randomnum) {
c += 0.01;
label++;
//update chart
chart.data.labels.push(label.toString());
chart.data.datasets[0].data.push(+c.toFixed(2));
chart.update();
} else {
clearInterval(interval);
c = 0;
label = 0;
//updateChart(myLineChart) /* maybe call this function again */
}
}, 20);
}
window.onload = renderchart;
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.6.0/Chart.min.js"></script>
<canvas id="bettingarea"></canvas><br>
<button onclick="updateChart(myLineChart)">Update Chart</button>
correct me if I am wrong ๐
Source:stackexchange.com