computed Unused property msg1
<!DOCTYPE?html>
<html?lang="zh-CN">
<head>
????<meta?charset="UTF-8">
????<title>Title</title>
????<script?src="http://static.runoob.com/assets/vue/1.0.11/vue.min.js"></script>
</head>
<body>
<div?id="app">
?{{msg}}
????<p>{{msg1}}</p>
</div>
</body>
<script>
?var?vm?=?new?Vue({
????????el:'#app',
?data:{
????????????msg:'Hello,Vue!'
?},
?watch:{
????????????msg:function?(newval,oldval)?{
????????????????console.log('newval?is?'?+?newval)
????????????????console.log('oldval?is?'+?oldval)
????????????}
????????},
?computed:{
?????????????:?function()?{
????????????????return?'computed:'?+?this.msg()
????????????}
????????}
????})
</script>
</html>我這樣寫，msg1它是灰色的，并沒有高亮，然后瀏覽器里并沒有出現 computed ：Hello，Vue!
請問這問題怎么解決呢？？？？？？？
2019-03-20
你的vue的版本引用有問題，請參考我們之前的課程的介紹，正確的引入 vue2.x的版本。
2019-03-19
computed:{ ???????msg1:?function()?{ ??????????return?'computed:'?+?this.msg ?????????} ??????} ????})