new Vue({
el:"#app",
data : {
items : ["k1","k2","k3"],
sss: ''
},
computed :{
}
})
<div id="app">
<input type="text" v-model.lazy="sss" />
<div v-for="item in items" v-show="sss==item">{{item}}</div>
<span></span>
</div>