<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<div id="app" class="container">
<h4>用 computed 即時反轉所輸入的文字</h4>
<input type="text" class="form-control" v-model="text" style="width: 300px;" placeholder="請輸入文字">
<div class="mt-3">
{{ reverseText }}
</div>
</div>
</body>
</html>
var app = new Vue({
el: "#app",
data: {
text: "",
newText: ""
},
computed: {
reverseText: function() {
return this.text
.split("")
.reverse()
.join("");
}
}
});
