# hide components until defined

[browser](https://lochiwei.gitbook.io/web/browser) ⟩ [web components](https://lochiwei.gitbook.io/web/component) ⟩ hide components

{% tabs %}
{% tab title="💈範例" %}

```css
/*  make <search-box> invisible before defined */ 
search-box:not(:defined) {

    opacity: 0;
    
    /* try to duplicate its eventual layout and size so that */
    /* nearby content does not move when it becomes defined. */
    display: inline-block; 
    width: 300px; 
    height: 50px;
}
```

{% endtab %}

{% tab title="📗 參考" %}

* [ ] :green\_book: JavaScript: The Definitive Guide (15.6 Web Components)
  {% endtab %}

{% tab title="👥 相關" %}

* [css](https://lochiwei.gitbook.io/web/css "mention")
* [client-side-javascript-timeline](https://lochiwei.gitbook.io/web/browser/event/client-side-javascript-timeline "mention") - components are not defined until fully loaded.
  {% endtab %}
  {% endtabs %}


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