InputItem cannot receive numeric type values

[xxyan0205]

Mand Mobile Version

v1.4.3

OS Version & Browser Version

all

Recurring Steps

<md-input-item v-model="myValue">
</md-input-item>

export default {
  data () {
    return {
      myValue: 12345
    }
  }
}

Actual Behaviors

[Vue warn]: Invalid prop: type check failed for prop "value". Expected String, got Number.