'Working Bootstrap/Chart.JS/JavaScript - make size of graphs proportionate to screen
I'm trying to learn to work with Bootstrap, Chart.JS, and JavaScript in general. I've been able to work off a template, however every graph on my .html file is huge. I'd like everything to fit in proportion to my screen. In other words, I want all of my graphs to appear without having to scroll down a bunch. How would I go about doing that? What specific place I would need to enter height: x and width: x? For example, I entered height: 650, width: 800 under var chLine2 and it literally did nothing. Any help is appreciated, especially as I'm doing my best to learn all of this. Ideally, it would look like this: https://www.codeply.com/go/3l6UhaQEhq/bootstrap-4-chartjs
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<div class="container">
<div class="row my-3">
<div class="col">
<h4>Bootstrap 4 Chart.js</h4>
</div>
</div>
<div class="row my-2">
<div class="col-md-6 py-1">
<div class="card">
<div class="card-body">
<canvas id="chLine"></canvas>
</div>
</div>
</div>
<div class="col-md-6 py-1">
<div class="card">
<div class="card-body">
<canvas id="chBar"></canvas>
</div>
</div>
</div>
</div>
<div class="row py-2">
<div class="col-md-4 py-1">
<div class="card">
<div class="card-body">
<canvas id="chDonut1"></canvas>
</div>
</div>
</div>
<div class="col-md-4 py-1">
<div class="card">
<div class="card-body">
<canvas id="chDonut2"></canvas>
</div>
</div>
</div>
<div class="col-md-4 py-1">
<div class="card">
<div class="card-body">
<canvas id="chDonut3"></canvas>
</div>
</div>
</div>
</div>
</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.5.0/Chart.js"></script>
<script>
/* chart.js chart examples */
// chart colors
var colors = ['#007bff','#28a745','#333333','#c3e6cb','#dc3545','#6c757d'];
/* large line chart */
var chLine = document.getElementById("chLine");
var chartData = {
labels: ["S", "M", "T", "W", "T", "F", "S"],
datasets: [{
data: [589, 445, 483, 503, 689, 692, 634],
backgroundColor: 'transparent',
borderColor: colors[0],
borderWidth: 4,
pointBackgroundColor: colors[0]
}
// {
// data: [639, 465, 493, 478, 589, 632, 674],
// backgroundColor: colors[3],
// borderColor: colors[1],
// borderWidth: 4,
// pointBackgroundColor: colors[1]
// }
]
};
if (chLine) {
new Chart(chLine, {
type: 'line',
data: chartData,
options: {
scales: {
xAxes: [{
ticks: {
beginAtZero: false
}
}]
},
legend: {
display: false
},
responsive: true
}
});
}
/* large pie/donut chart */
var chPie = document.getElementById("chPie");
if (chPie) {
new Chart(chPie, {
type: 'pie',
data: {
labels: ['Desktop', 'Phone', 'Tablet', 'Unknown'],
datasets: [
{
backgroundColor: [colors[1],colors[0],colors[2],colors[5]],
borderWidth: 0,
data: [50, 40, 15, 5]
}
]
},
plugins: [{
beforeDraw: function(chart) {
var width = chart.chart.width,
height = chart.chart.height,
ctx = chart.chart.ctx;
ctx.restore();
var fontSize = (height / 70).toFixed(2);
ctx.font = fontSize + "em sans-serif";
ctx.textBaseline = "middle";
var text = chart.config.data.datasets[0].data[0] + "%",
textX = Math.round((width - ctx.measureText(text).width) / 2),
textY = height / 2;
ctx.fillText(text, textX, textY);
ctx.save();
}
}],
options: {layout:{padding:0}, legend:{display:false}, cutoutPercentage: 80}
});
}
/* bar chart */
var chBar = document.getElementById("chBar");
if (chBar) {
new Chart(chBar, {
type: 'bar',
data: {
labels: ["S", "M", "T", "W", "T", "F", "S"],
datasets: [{
data: [589, 445, 483, 503, 689, 692, 634],
backgroundColor: colors[0]
},
{
data: [639, 465, 493, 478, 589, 632, 674],
backgroundColor: colors[1]
}]
},
options: {
legend: {
display: false
},
scales: {
xAxes: [{
barPercentage: 0.4,
categoryPercentage: 0.5
}]
}
}
});
}
/* 3 donut charts */
var donutOptions = {
cutoutPercentage: 85,
legend: {position:'bottom', padding:5, labels: {pointStyle:'circle', usePointStyle:true}}
};
// donut 1
var chDonutData1 = {
labels: ['Bootstrap', 'Popper', 'Other'],
datasets: [
{
backgroundColor: colors.slice(0,3),
borderWidth: 0,
data: [74, 11, 40]
}
]
};
var chDonut1 = document.getElementById("chDonut1");
if (chDonut1) {
new Chart(chDonut1, {
type: 'pie',
data: chDonutData1,
options: donutOptions
});
}
// donut 2
var chDonutData2 = {
labels: ['Wips', 'Pops', 'Dags'],
datasets: [
{
backgroundColor: colors.slice(0,3),
borderWidth: 0,
data: [40, 45, 30]
}
]
};
var chDonut2 = document.getElementById("chDonut2");
if (chDonut2) {
new Chart(chDonut2, {
type: 'pie',
data: chDonutData2,
options: donutOptions
});
}
// donut 3
var chDonutData3 = {
labels: ['Angular', 'React', 'Other'],
datasets: [
{
backgroundColor: colors.slice(0,3),
borderWidth: 0,
data: [21, 45, 55, 33]
}
]
};
var chDonut3 = document.getElementById("chDonut3");
if (chDonut3) {
new Chart(chDonut3, {
type: 'pie',
data: chDonutData3,
options: donutOptions
});
}
/* 3 line charts */
var lineOptions = {
legend:{display:false},
tooltips:{interest:false,bodyFontSize:11,titleFontSize:11},
scales:{
xAxes:[
{
ticks:{
display:false
},
gridLines: {
display:false,
drawBorder:false
}
}
],
yAxes:[{display:false}]
},
layout: {
padding: {
left: 6,
right: 6,
top: 4,
bottom: 6
}
}
};
var chLine1 = document.getElementById("chLine1");
if (chLine1) {
new Chart(chLine1, {
type: 'line',
data: {
labels: ['Jan','Feb','Mar','Apr','May'],
datasets: [
{
backgroundColor:'#ffffff',
borderColor:'#ffffff',
data: [10, 11, 4, 11, 4],
fill: false
}
]
},
options: lineOptions
});
}
var chLine2 = document.getElementById("chLine2");
if (chLine2) {
new Chart(chLine2, {
type: 'line',
data: {
labels: ['A','B','C','D','E'],
datasets: [
{
backgroundColor:'#ffffff',
borderColor:'#ffffff',
data: [4, 5, 7, 13, 12],
fill: false
}
]
},
options: lineOptions
});
}
var chLine3 = document.getElementById("chLine3");
if (chLine3) {
new Chart(chLine3, {
type: 'line',
data: {
labels: ['Pos','Neg','Nue','Other','Unknown'],
datasets: [
{
backgroundColor:'#ffffff',
borderColor:'#ffffff',
data: [13, 15, 10, 9, 14],
fill: false
}
]
},
options: lineOptions
});
}
</script>
Sources
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Source: Stack Overflow
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