I am looking to make my CanvasJS background transparent, but I'm having some issues. The backgroundColor property is used in CanvasJS to set the color of the canvas background.
When I tried entering "None" instead of a color code, it ended up giving me a black background.
It would be great if there was a way to specify different opacities for the background as well.
If you want a background to be transparent, simply set the backgroundColor to "transparent". To add transparency to a specific color, use rgba color coding like this: backgroundColor: "rgba(225,150,150,0.5)".
To make a background color transparent, simply use background-color: transparent;.
If you want to adjust the opacity, you can achieve this by using rgba values. For example, for a white color at 50% opacity, use
background-color: rgba(255, 255, 255, .5);While I am not familiar with CanvasJs and its effects, these CSS tips should help you get the desired result.
After some experimenting, I stumbled upon the solution. By setting backgroundColor to an empty string (backgroundColor: ''), you can remove the background color completely and make it transparent.
My curiosity remains about how to add transparency to a color. If anyone has any insights, feel free to share in the comments.
As per the information provided in the Canvasjs documentation, it is possible to specify a background color for your chart title by using rgba(0, 0, 0, 0) to make it transparent (adjusting the values as needed):
window.onload = function () {
var chart = new CanvasJS.Chart("chartContainer",
{
title:{
text: "Title with Background Color",
padding: 5,
backgroundColor: rgba(0, 0, 0, 0),
},
data: [
{
type: "column",
dataPoints: [
{ x: 10, y: 71 },
]
}
]
});
chart.render();
}
I trust this information will be of assistance to you :)
<br/><!-- Ensuring the JSFiddle's Result label doesn't cover the Chart -->
<div id="chartContainer" style="height: 300px; width: 100%;"></div>
Check out the complete demonstration here
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