In this article we are going explore a particularly interesting feature that has many applications. What is referred to as data-binding. Basically, through the framework, we can map the attributes of our html tags with values provided by our Vue instance. We could bind for example the value of an input field:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<!-- importing vue js dev library -->
<!-- development version, includes helpful console warnings -->
<script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
<title>My vue Test</title>
</head>
<body>
<div id="app">
What's your name?
<br>
<input type="text" name="name" v-bind:value="name">
<br>
<button v-on:click="changeName()">
change name
</button>
</div>
<script type="text/javascript">
var app = new Vue({ //instantiating the vue instance
el: '#app', //we select where vue is going to work in the DOM
data: {
name: 'Mattia'//this are the data
},
methods: {
changeName: function() {
this.name = "Martino";
}
}
})
</script>
</body>
</html>
this is the resulting page:
If we click on the button, the name shown as value in the field will be changed immediately.
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