line-customTooltips.html
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<!doctype html>
<html>
<head>
<title>Line Chart with Custom Tooltips</title>
<script src="../dist/Chart.bundle.js"></script>
<script src="http://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<style>
canvas{
-moz-user-select: none;
-webkit-user-select: none;
-ms-user-select: none;
}
#chartjs-tooltip {
opacity: 1;
position: absolute;
background: rgba(0, 0, 0, .7);
color: white;
border-radius: 3px;
-webkit-transition: all .1s ease;
transition: all .1s ease;
pointer-events: none;
-webkit-transform: translate(-50%, 0);
transform: translate(-50%, 0);
}
.chartjs-tooltip-key {
display: inline-block;
width: 10px;
height: 10px;
}
</style>
</head>
<body>
<div id="canvas-holder1" style="width:75%;">
<canvas id="chart1"/>
</div>
<script>
window.count = 0;
Chart.defaults.global.pointHitDetectionRadius = 1;
var customTooltips = function(tooltip) {
// Tooltip Element
var tooltipEl = $('#chartjs-tooltip');
if (!tooltipEl[0]) {
$('body').append('<div id="chartjs-tooltip"></div>');
tooltipEl = $('#chartjs-tooltip');
}
// Hide if no tooltip
if (!tooltip.opacity) {
tooltipEl.css({
opacity: 0
});
$('.chartjs-wrap canvas')
.each(function(index, el) {
$(el).css('cursor', 'default');
});
return;
}
$(this._chart.canvas).css('cursor', 'pointer');
// Set caret Position
tooltipEl.removeClass('above below no-transform');
if (tooltip.yAlign) {
tooltipEl.addClass(tooltip.yAlign);
} else {
tooltipEl.addClass('no-transform');
}
// Set Text
if (tooltip.body) {
var innerHtml = [
(tooltip.beforeTitle || []).join('\n'), (tooltip.title || []).join('\n'), (tooltip.afterTitle || []).join('\n'), (tooltip.beforeBody || []).join('\n'), (tooltip.body || []).join('\n'), (tooltip.afterBody || []).join('\n'), (tooltip.beforeFooter || [])
.join('\n'), (tooltip.footer || []).join('\n'), (tooltip.afterFooter || []).join('\n')
];
tooltipEl.html(innerHtml.join('\n'));
}
// Find Y Location on page
var top = 0;
if (tooltip.yAlign) {
if (tooltip.yAlign == 'above') {
top = tooltip.y - tooltip.caretHeight - tooltip.caretPadding;
} else {
top = tooltip.y + tooltip.caretHeight + tooltip.caretPadding;
}
}
var position = $(this._chart.canvas)[0].getBoundingClientRect();
// Display, position, and set styles for font
tooltipEl.css({
opacity: 1,
width: tooltip.width ? (tooltip.width + 'px') : 'auto',
left: position.left + tooltip.x + 'px',
top: position.top + top + 'px',
fontFamily: tooltip._fontFamily,
fontSize: tooltip.fontSize,
fontStyle: tooltip._fontStyle,
padding: tooltip.yPadding + 'px ' + tooltip.xPadding + 'px',
});
};
var randomScalingFactor = function() {
return Math.round(Math.random() * 100);
};
var lineChartData = {
labels: ["January", "February", "March", "April", "May", "June", "July"],
datasets: [{
label: "My First dataset",
data: [randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor()]
}, {
label: "My Second dataset",
data: [randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor(), randomScalingFactor()]
}]
};
window.onload = function() {
var chartEl = document.getElementById("chart1");
window.myLine = new Chart(chartEl, {
type: 'line',
data: lineChartData,
options: {
title:{
display:true,
text:'Chart.js Line Chart - Custom Tooltips'
},
tooltips: {
enabled: false,
custom: customTooltips
}
}
});
};
</script>
</body>
</html>