Formatting text is something that we need to do often while developing applications, whether that is to render monetary amounts, dates, or to transform/translate text.
Vue filters allow us to do this easily in a reusable manner. We can use Vue filters by using the pipe symbol: |. This is indeed inspired by Angular (this is getting old already), which itself has taken inspiration from classic Unix shells for its pipes.
Here's an example:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Vue filter</title>
<!-- development version of Vue.js -->
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
</head>
<body>
<div id="app">
{{ message | reverse }}
</div>
<script type="text/javascript">
let app = new Vue({
el: '#app',
data: {
message: "Hello world!"
},
filters: {
reverse: (value) =>
value.split('').reduce((reversedString, char)
=> char +
reversedString, '')
}
});
</script>
</body>
</html>
There's not much more to say here; if you understand Angular pipes, then Vue filters are quite intuitive.
Next up are lifecycle hooks.