Commit 5d57a04

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closes #3111

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Lines changed: 7 additions & 1 deletion

Original file line number	Diff line number	Diff line change
`@@ -206,7 +206,13 @@ function showMessage(from, !text = "no text given"/!) {`
`206`	`206`	`showMessage("Ann"); // Ann: no text given`
`207`	`207`	```
`208`	`208`
`209`		-Now if the `text` parameter is not passed, it will get the value `"no text given"`
	`209`	+Now if the `text` parameter is not passed, it will get the value `"no text given"`.
	`210`	`+`
	`211`	+The default value also jumps in if the parameter exists, but strictly equals `undefined`, like this:
	`212`	`+`
	`213`	+```js
	`214`	`+showMessage("Ann", undefined); // Ann: no text given`
	`215`	+```
`210`	`216`
`211`	`217`	Here `"no text given"` is a string, but it can be a more complex expression, which is only evaluated and assigned if the parameter is missing. So, this is also possible:
`212`	`218`

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