vue enter事件无效，加入native

 　　　vue  @keyup.enter无法检测enter事件，加上修饰符号即可   @keyup.enter.native

<Input type="password" v-model="password" placeholder="password" @keyup.enter.native="handleSubmit()">
    <Icon type="ios-locked-outline" slot="prepend"></Icon>
</Input>