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7_3_chart_js.html
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<!doctype html>
<html>
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">
<title> Animation Callbacks </title>
<!-- <script src="js/Chart.bundle.min.js"></script>-->
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.7.3/Chart.bundle.min.js"></script>
<style>
/*
canvas {
-moz-user-select: none;
-webkit-user-select: none;
-ms-user-select: none;
}
*/
</style>
</head>
<body>
<div class="container-fluid" style="min-height: 1000px;background-color: gray"></div>
<div class="container-fluid" style="min-height: 500px;">
<div class="row">
<div class="col-md-6"></div>
<div class="col-md-6">
<div style=""><canvas id="myChart" width="100" height="50"></canvas></div>
</div>
</div>
</div>
<div style="min-height: 2000px;background-color: gray"></div>
<script src="https://code.jquery.com/jquery-3.3.1.js"></script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.12.1/jquery-ui.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js" integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js" integrity="sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy" crossorigin="anonymous"></script>
<script>
var ctx = document.getElementById("myChart").getContext('2d');
var chartdata = {
type: 'bar',
data: {
labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
datasets: [{
label: '# of Votes',
data: [12, 19, 3, 5, 2, 3],
backgroundColor: [
'rgba(255, 99, 132, 0.2)',
'rgba(54, 162, 235, 0.2)',
'rgba(255, 206, 86, 0.2)',
'rgba(75, 192, 192, 0.2)',
'rgba(153, 102, 255, 0.2)',
'rgba(255, 159, 64, 0.2)'
],
borderColor: [
'rgba(255,99,132,1)',
'rgba(54, 162, 235, 1)',
'rgba(255, 206, 86, 1)',
'rgba(75, 192, 192, 1)',
'rgba(153, 102, 255, 1)',
'rgba(255, 159, 64, 1)'
],
borderWidth: 1
}]
},
options: {
scales: {
yAxes: [{
ticks: {
beginAtZero: true
}
}]
},
responsive: true // default true
}
};
var inView = false;
$(document).ready(function() {
$(window).scroll(function() {
var winTop = $(window).scrollTop();
var winh = $(window).height();
var objpos = $("#myChart").offset().top;
if (objpos < winTop + winh * 0.5 && !inView) {
new Chart(ctx, chartdata);
inView = true;
console.log("successful!!");
}
});
});
</script>
</body>
</html>