Why are some react-chartjs-2 options being ignored? - reactjs

Question

I have this simple line chart that I am trying to change the gridlines from their default gray, however the options object appears to be selectively working. Maybe I am missing something basic but I have been fiddling with it for hours and cannot get it to work, any help is appreciated! I am using "react-chartjs-2".
Below is my render() method where I pass the data and options.
render() {
const data = {
labels: this.state.realTimes,
datasets: [
{
label: "Price",
data: this.state.Prices,
fill: false,
backgroundColor: "rgb(255, 255, 255)",
borderColor: "rgba(255, 255, 255)"
}
]
};
const options = {
scales: {
yAxis: {
beginAtZero: true, //this works
gridLines: {
color: "rgba(171,171,171,1)", //this doesn't
lineWidth: 0.5
}
}
}
};
return (
<div>
{this.state.loading ? (
this.loading()
) : (
<Line data={data} options={options} width={600} height={160} />
)}
</div>
);
}

Answer 1

Change scales.yAxis.gridLines to scales.yAxis.grid and it will work.
see Grid Line Configuration from Chart.js documentation or the Grid Configuration samples page.
Please take a look at below runnable JavaScript code and see how it works.
Please take a look at
new Chart('line-chart', {
type: 'line',
data: {
labels: ['A', 'B', 'C', 'D', 'E', 'F', 'G'],
datasets: [{
label: 'My Dataset',
data: [65, 59, 80, 81, 56, 55, 40],
fill: false,
borderColor: 'rgb(75, 192, 192)',
tension: 0.2
}]
},
options: {
scales: {
yAxis: {
beginAtZero: true,
grid: {
color: 'rgb(0 ,0 ,255)',
lineWidth: 0.5
}
}
}
}
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/3.1.1/chart.min.js"></script>
<canvas id="line-chart" height="100"></canvas>

Answer 2

React chart.js is not up to date with chart.js so you can't use v3. Please use the v2 syntax since that is what react-chartjs uses.
https://www.chartjs.org/docs/2.9.4/axes/styling.html#grid-line-configuration
If you change yAxes: {gridLines: {color: 'red'}} to yAxes: [{gridLines: { color: 'red'}}] it should work as intended