Quasar is a popular Vue UI library for developing good looking Vue apps.
In this article, we’ll take a look at how to create Vue apps with the Quasar UI library.
Linear Progress Bar
We can add a linear progress bar into our Vue app with Quasar’s q-linear-progress component.
To add it, we write:
<!DOCTYPE html>
<html>
<head>
<link
href="https://fonts.googleapis.com/css?family=Roboto:100,300,400,500,700,900|Material+Icons"
rel="stylesheet"
type="text/css"
/>
<link
href="https://cdn.jsdelivr.net/npm/quasar@1.12.13/dist/quasar.min.css"
rel="stylesheet"
type="text/css"
/>
</head>
<body class="body--dark">
<script src="https://cdn.jsdelivr.net/npm/vue@^2.0.0/dist/vue.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/quasar@1.12.13/dist/quasar.umd.min.js"></script>
<div id="q-app">
<q-layout
view="lHh Lpr lFf"
container
style="height: 100vh;"
class="shadow-2 rounded-borders"
>
<div class="q-pa-md">
<q-linear-progress
indeterminate
rounded
track-color="orange"
color="purple"
class="q-mt-sm"
></q-linear-progress>
</div>
</q-layout>
</div>
<script>
new Vue({
el: "#q-app",
data: {}
});
</script>
</body>
</html>
The track-color is the background color.
color is the progress bar’s color.
indeterminate makes the bar move in a loop.
rounded makes the bar rounded.
The reverse prop reverses the direction of the progress bar movement:
<!DOCTYPE html>
<html>
<head>
<link
href="https://fonts.googleapis.com/css?family=Roboto:100,300,400,500,700,900|Material+Icons"
rel="stylesheet"
type="text/css"
/>
<link
href="https://cdn.jsdelivr.net/npm/quasar@1.12.13/dist/quasar.min.css"
rel="stylesheet"
type="text/css"
/>
</head>
<body class="body--dark">
<script src="https://cdn.jsdelivr.net/npm/vue@^2.0.0/dist/vue.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/quasar@1.12.13/dist/quasar.umd.min.js"></script>
<div id="q-app">
<q-layout
view="lHh Lpr lFf"
container
style="height: 100vh;"
class="shadow-2 rounded-borders"
>
<div class="q-pa-md">
<q-linear-progress
indeterminate
rounded
reverse
track-color="orange"
color="purple"
class="q-mt-sm"
></q-linear-progress>
</div>
</q-layout>
</div>
<script>
new Vue({
el: "#q-app",
data: {}
});
</script>
</body>
</html>
The height of the bar can be changed with the size prop:
<!DOCTYPE html>
<html>
<head>
<link
href="https://fonts.googleapis.com/css?family=Roboto:100,300,400,500,700,900|Material+Icons"
rel="stylesheet"
type="text/css"
/>
<link
href="https://cdn.jsdelivr.net/npm/quasar@1.12.13/dist/quasar.min.css"
rel="stylesheet"
type="text/css"
/>
</head>
<body class="body--dark">
<script src="https://cdn.jsdelivr.net/npm/vue@^2.0.0/dist/vue.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/quasar@1.12.13/dist/quasar.umd.min.js"></script>
<div id="q-app">
<q-layout
view="lHh Lpr lFf"
container
style="height: 100vh;"
class="shadow-2 rounded-borders"
>
<div class="q-pa-md">
<q-linear-progress
indeterminate
rounded
size="25px"
track-color="orange"
color="purple"
class="q-mt-sm"
></q-linear-progress>
</div>
</q-layout>
</div>
<script>
new Vue({
el: "#q-app",
data: {
value: 9
}
});
</script>
</body>
</html>
We can also change the size to a standard size:
<!DOCTYPE html>
<html>
<head>
<link
href="https://fonts.googleapis.com/css?family=Roboto:100,300,400,500,700,900|Material+Icons"
rel="stylesheet"
type="text/css"
/>
<link
href="https://cdn.jsdelivr.net/npm/quasar@1.12.13/dist/quasar.min.css"
rel="stylesheet"
type="text/css"
/>
<style>
.example-item {
height: 200px;
width: 200px;
}
</style>
</head>
<body class="body--dark">
<script src="https://cdn.jsdelivr.net/npm/vue@^2.0.0/dist/vue.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/quasar@1.12.13/dist/quasar.umd.min.js"></script>
<div id="q-app">
<q-layout
view="lHh Lpr lFf"
container
style="height: 100vh;"
class="shadow-2 rounded-borders"
>
<div class="q-pa-md">
<q-linear-progress
indeterminate
rounded
size="xl"
track-color="orange"
color="purple"
class="q-mt-sm"
></q-linear-progress>
</div>
</q-layout>
</div>
<script>
new Vue({
el: "#q-app",
data: {
value: 9
}
});
</script>
</body>
</html>
Other possible values include ‘xs’, ‘sm’, ‘md’, and ‘lg’ .
We can set the value prop to display the progress value we want and also add a label by populating the default slot:
<!DOCTYPE html>
<html>
<head>
<link
href="https://fonts.googleapis.com/css?family=Roboto:100,300,400,500,700,900|Material+Icons"
rel="stylesheet"
type="text/css"
/>
<link
href="https://cdn.jsdelivr.net/npm/quasar@1.12.13/dist/quasar.min.css"
rel="stylesheet"
type="text/css"
/>
</head>
<body class="body--dark">
<script src="https://cdn.jsdelivr.net/npm/vue@^2.0.0/dist/vue.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/quasar@1.12.13/dist/quasar.umd.min.js"></script>
<div id="q-app">
<q-layout
view="lHh Lpr lFf"
container
style="height: 100vh;"
class="shadow-2 rounded-borders"
>
<div class="q-pa-md">
<q-linear-progress size="25px" :value="progress" color="accent">
<div class="absolute-full flex flex-center">
<q-badge color="white" text-color="accent" :label="progressLabel">
</q-badge>
</div>
</q-linear-progress>
</div>
</q-layout>
</div>
<script>
new Vue({
el: "#q-app",
data: {
progress: 0.3
},
computed: {
progressLabel() {
return (this.progress * 100).toFixed(2) + "%";
}
}
});
</script>
</body>
</html>
Conclusion
We can add a linear progress bar into our Vue app with the q-linear-progress component.
