How to get the value of the ref attribute,

How to get the value wwww of the ref attribute?

    <form @submit.prevent enctype="multipart/form-data">
        <input type="file" ref="wwww" @change="selectFile">
    </form>

I do like this:

console.log(this.$refs.wwww)

But instead of a value, I get like this:

<input type="file">

I need it like this: wwww

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