How to extract ChartJs data and config properties - chart.js

Question

We're trying to give colleagues the ability to share ChartJS graphs with each other. Most of our current graphs are dynamic and users can apply filters (dates, add/remove data etc).
The plan is to have a button that, on click, will get the data and properties (labels, line colours, borderWidth, chart type etc) and pass this data via a url. The user can then send that link to someone else. They can open it up to view that chart captured as it was seen by the original user, like a screenshot, but with all the interactive features enabled.
E.g.
stackoverflow.com/shared_chart.php?conf=%7B%22responsive%22:true,%22responsiveA
When a chart is created by myChart = new Chart(ctx, config); ChartJs adds a lot of new properties to the chart object (e.g $plugin, _meta) that I don't need.
And, when I JSON.stringify(myChart.config) I get an error "Uncaught TypeError: Converting circular structure to JSON".
I've added the code needed to create a sample bar chart below:
// HTML needs a canvas element
<-- <canvas id="myChart"></canvas> -->
const ctx = $('#myChart');
let config;
let myChart;
// config would look something like this
config = {
type: 'bar',
data: {
labels: ['January', 'February', 'March', 'April', 'May', 'June', 'July'],
datasets: [{
label: 'Dataset 1',
backgroundColor: 'rgba(92,184,92,0.5)',
borderColor: 'rgba(92,184,92,1.000)',
borderWidth: 2,
data: [
1,2,3,4,3,2,1
]
}, {
label: 'Dataset 2',
backgroundColor: 'rgba(66,139,202,0.5)',
borderColor: 'rgba(66,139,202,1)',
borderWidth: 2,
data: [
7,2,3,1,5,2,1
]
}]
},
options: {
responsive: true,
maintainAspectRatio: false,
legend: {
position: 'top',
},
title: {
display: true,
text: 'Chart.js Bar Chart'
}
}
}
myChart = new Chart(ctx,config);
On the page they are directed to, I'd like to grab the GET data and construct a new Chart.

Answer 1

You can exclude the extra properties that Chart.js adds. E.g.:
JSON.stringify(myChart.config, function(key, value) {
if (key === '_meta') return undefined;
else return value;
}