< select class= "form-control" v muri model = "aaa" >
<option v-for="RoleItem in list_roleName" value=RoleItem.id>{{RoleItem.name}}</option> < / select >
{{aaa}}
data are as follows
if the user selects BD, the data of aaa is 3. How to do this
https://codesandbox.io/s/nr43.
<select class="form-control" v-model="aaa">
<option v-for="RoleItem in list_roleName" :value=RoleItem.id>{{RoleItem.name}}</option>
</select> 
new Vue({
el: "-sharpapp",
data: {
selectId:'',
todos: [
{ text: "Learn JavaScript", done: false,id:1 },
{ text: "Learn Vue", done: false,id:2 },
{ text: "Play around in JSFiddle", done: true,id:3 },
{ text: "Build something awesome", done: true,id:4 }
]
},
methods: {
}
})
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