key设置不一样即可
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
</head>
<body>
<div id="app">
<div v-for="(item,index) in datalist" :key="index">
{{item.name}}
<span v-for="(subitem,subindex) in item.value" :key="subindex">
{{subitem.submenu}}
</span>
</div>
</div>
<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/vue.2.2.min.js"></script>
<script>
new Vue({
el: '#app',
data: function() {
return {
datalist:[{"name":"菜单","value":[{"submenu":"子菜单"}]},{"name":"菜单","value":[{"submenu":"子菜单"}]}]
}
},
})
</script>
</body>
</html>
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