### 基本用法

``` vue
<template>
<div>
<div @click="hanldeClick">123</div>
<cw-pdf-select-view ref="a" value="http://storage.xuetangx.com/public_assets/xuetangx/PDF/PlayerAPI_v1.0.6.pdf"></cw-pdf-select-view>
</div>
</template>
<script>
export default {
    methods:{
        hanldeClick(){
            this.$refs['a'].uploadFile()
        }
    }
}
</script>
```