vanillajs-deck/slides/data-binding.html

<title>Data-Binding Example 1</title>
<h1>Data-Binding Example</h1>
<label for="first"><div>Number:</div><input type="text" id="first"/></label>
<label for="second"><div>Multiplied by Number:</div><input type="text" id="second"/></label>
<label for="result"><div>Result:</div><input type="text" id="result" disabled/></label>
<label for="firstName"><div>First Name:</div><input type="text" id="firstName"/></label>
<label for="lastName"><div>Last Name:</div><input type="text" id="lastName"/></label>
<label for="fullName"><div>Full Name:</div><input type="text" id="fullName" disabled/></label>
<br/>
<ul>
    <li repeat="list" class="appear">{{item.idx}} &mdash; {{item.value}}</li>
</ul>
<script>
    this.list = [{idx: 0, value:"one"}, {idx: 1, value:"two"}, {idx: 2, value:"three"}];
    const bindings = () => {
        var n1 = this.observable(2);
        var n2 = this.observable(2);
        var result = this.computed(() => n1.value*n2.value, [n1, n2]);
        var first = this.observable("Jeremy");
        var last = this.observable("");
        var full = this.computed(() => `${first.value} ${last.value}`.trim(), [first, last]);
        this.bindValue(document.getElementById("first"), n1);
        this.bindValue(document.getElementById("second"), n2);
        this.bindValue(document.getElementById("result"), result);
        this.bindValue(document.getElementById("firstName"), first);
        this.bindValue(document.getElementById("lastName"), last);
        this.bindValue(document.getElementById("fullName"), full);
    };
    setTimeout(bindings, 0);
</script>