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docs: clarify ordering of attributes and props #15805

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19 changes: 17 additions & 2 deletions documentation/docs/03-template-syntax/01-basic-markup.md
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Expand Up @@ -82,12 +82,27 @@ As with elements, `name={name}` can be replaced with the `{name}` shorthand.
<Widget foo={bar} answer={42} text="hello" />
```

_Spread attributes_ allow many attributes or properties to be passed to an element or component at once.
## Spreading

_Spreading_ allow many attributes or properties to be passed to an element or component at once.

An element or component can have multiple spread attributes, interspersed with regular ones.

```svelte
<Widget {...things} />
<button {...attributes}>...</button>
<button {...attributes} type="button">...</button>
<Widget {...props} />
<Widget {...props} foo={bar} text="hello" {...aria} />
```
The order in which they are displayed matters

```svelte
<script>
const attributes = { type: "button" };
</script>

<button {...attributes} type="submit">...</button> <!-- type is "submit" -->
<button type="submit" {...attributes}>...</button> <!-- type is "button" -->
```

## Events
Expand Down