window.onload = function() {
var progressBarValue = ko.observable(0),
buttonText = ko.observable("Start progress"),
seconds = 10,
inProgress = false,
intervalId;
function setCurrentStatus() {
progressBarValue((10 - seconds) * 10);
$("#timer").text(("0" + seconds).slice(-2));
}
function timer() {
seconds--;
setCurrentStatus();
if(seconds === 0) {
clearInterval(intervalId);
seconds = 10;
return;
}
}
var viewModel = {
progressBarOptions: {
min: 0,
max: 100,
value: progressBarValue,
width: "90%",
statusFormat: function(value) {
return "Loading: " + value * 100 + "%";
},
onComplete: function(e){
inProgress = false;
buttonText("Restart progress");
e.element.addClass("complete");
}
},
buttonOptions: {
text: buttonText,
width: 200,
onClick: function() {
$("#progressBarStatus").removeClass("complete");
if (inProgress) {
buttonText("Continue progress");
clearInterval(intervalId);
} else {
buttonText("Stop progress");
setCurrentStatus();
intervalId = setInterval(timer, 1000);
}
inProgress = !inProgress;
}
}
};
ko.applyBindings(viewModel, document.getElementById("progress-bar"));
};
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>DevExtreme Demo</title>
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0" />
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script>window.jQuery || document.write(decodeURIComponent('%3Cscript src="js/jquery.min.js"%3E%3C/script%3E'))</script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/knockout/3.4.2/knockout-min.js"></script>
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.2.6/css/dx.common.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/20.2.6/css/dx.light.css" />
<script src="https://cdn3.devexpress.com/jslib/20.2.6/js/dx.all.js"></script>
<link rel="stylesheet" type="text/css" href="styles.css" />
<script src="index.js"></script>
</head>
<body class="dx-viewport">
<div class="demo-container">
<div class="form" id="progress-bar">
<div id="progress-button" data-bind="dxButton: buttonOptions"></div>
<div class="progress-info">
Time left 00:00:<span id="timer">10</span>
</div>
<div id="progress">
<div id="progressBarStatus" data-bind="dxProgressBar: progressBarOptions"></div>
</div>
</div>
</div>
</body>
</html>
.form {
padding: 20% 0;
text-align: center;
}
#progress-button{
margin-bottom: 20px;
}
#progressBarStatus {
display: inline-block;
}
.complete .dx-progressbar-range {
background-color: green;
}