vue js default prop

props: {
  name: {
    type: String,
    default: 'John Doe'
  }
}

    props: {
        users_count: {
            type: [Number, String],
            required: true
        }
    }, 

props: {
  year: {
    default: 2016,
    type: Number
  }
}

export default {
  name: 'Camera',
  props: ['name', 'img'],
}

<!-- Even though the array is static, we need v-bind to tell Vue that -->
<!-- this is a JavaScript expression rather than a string.            -->
<blog-post v-bind:comment-ids="[234, 266, 273]"></blog-post>

<!-- Dynamically assign to the value of a variable. -->
<blog-post v-bind:comment-ids="post.commentIds"></blog-post>

<!-- Dynamically assign the value of a variable -->
<blog-post v-bind:title="post.title"></blog-post>

<!-- Dynamically assign the value of a complex expression -->
<blog-post
  v-bind:title="post.title + ' by ' + post.author.name"
></blog-post>