I have problem with chart js, i want to coloring chart area like image above
I try to find configuration from charJs Docs , but nothing matched. its possible or not to change chart area background color? if possible anyone can help me?
Html
<canvas id="barChart" width="600" height="300"></canvas>
Javascript
var ctx = document.getElementById("barChart");
var barChart = new Chart(ctx,{
type: 'bar',
data: {
labels:["Label1","Label2","Label3","Label4"],
borderColor : "#fffff",
datasets: [
{
data: ["2","3","1","4"],
borderColor : "#fff",
borderWidth : "3",
hoverBorderColor : "#000",
backgroundColor: [
"#f38b4a",
"#56d798",
"#ff8397",
"#6970d5"
],
hoverBackgroundColor: [
"#f38b4a",
"#56d798",
"#ff8397",
"#6970d5"
]
}]
},
options: {
scales: {
yAxes: [{
ticks:{
min : 0,
stepSize : 1,
fontColor : "#000",
fontSize : 14
},
gridLines:{
color: "#000",
lineWidth:2,
zeroLineColor :"#000",
zeroLineWidth : 2
},
stacked: true
}],
xAxes: [{
ticks:{
fontColor : "#000",
fontSize : 14
},
gridLines:{
color: "#fff",
lineWidth:2
}
}]
},
responsive:false
}
});
Here's my current code jsFiddle
so everyone can try for find solution. thanks for your help.
There is no built-in method to change background color, but you can use CSS. JSFiddle.
ctx.style.backgroundColor = 'rgba(255,0,0,255)';
EDIT
If you want to fill exact area of chart and no whole div, you can write your own chart.js plugin. Try it on JSFiddle.
Chart.pluginService.register({
beforeDraw: function (chart, easing) {
if (chart.config.options.chartArea && chart.config.options.chartArea.backgroundColor) {
var ctx = chart.chart.ctx;
var chartArea = chart.chartArea;
ctx.save();
ctx.fillStyle = chart.config.options.chartArea.backgroundColor;
ctx.fillRect(chartArea.left, chartArea.top, chartArea.right - chartArea.left, chartArea.bottom - chartArea.top);
ctx.restore();
}
}
});
var config = {
type: 'bar',
data: {
labels:["Label1","Label2","Label3","Label4"],
borderColor : "#fffff",
datasets: [
{
data: ["2","3","1","4"],
borderColor : "#fff",
borderWidth : "3",
hoverBorderColor : "#000",
backgroundColor: [
"#f38b4a",
"#56d798",
"#ff8397",
"#6970d5"
],
hoverBackgroundColor: [
"#f38b4a",
"#56d798",
"#ff8397",
"#6970d5"
]
}]
},
options: {
scales: {
yAxes: [{
ticks:{
min : 0,
stepSize : 1,
fontColor : "#000",
fontSize : 14
},
gridLines:{
color: "#000",
lineWidth:2,
zeroLineColor :"#000",
zeroLineWidth : 2
},
stacked: true
}],
xAxes: [{
ticks:{
fontColor : "#000",
fontSize : 14
},
gridLines:{
color: "#fff",
lineWidth:2
}
}]
},
responsive:false,
chartArea: {
backgroundColor: 'rgba(251, 85, 85, 0.4)'
}
}
};
var ctx = document.getElementById("barChart").getContext("2d");
new Chart(ctx, config);