fix/add-anonymous-function-example

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moT01 2019-06-25 21:48:56 -05:00 committed by Kristofer Koishigawa
parent 9c1b83dd0c
commit 2e49aa02df

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@ -8,12 +8,18 @@ challengeType: 1
<section id='description'>
In the <code>export</code> lesson, you learned about the syntax referred to as a <dfn>named export</dfn>. This allowed you to make multiple functions and variables available for use in other files.
There is another <code>export</code> syntax you need to know, known as <dfn>export default</dfn>. Usually you will use this syntax if only one value is being exported from a file. It is also used to create a fallback value for a file or module.
Here is a quick example of <code>export default</code>:
Here is a couple examples using <code>export default</code>:
```js
// named function
export default function add(x, y) {
return x + y;
}
// anonymous function
export default function(x, y) {
return x + y;
}
```
Since <code>export default</code> is used to declare a fallback value for a module or file, you can only have one value be a default export in each module or file. Additionally, you cannot use <code>export default</code> with <code>var</code>, <code>let</code>, or <code>const</code>