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Exercise 12

Consider the following code:

function foo(bar) {
  console.log(bar, bar, bar);
}

foo("hello"); // should print "hello hello hello"
bar("hi");    // should print "hi hi hi"

As written, this code will raise an error on line 6. Without creating a new function or changing lines 5 or 6, update this code to work as intended.

Solution

function foo(bar) {
  console.log(bar, bar, bar);
}

//highlight
let bar = foo;
//endhighlight

foo("hello"); // prints "hello hello hello"
bar("hi");    // prints "hi hi hi

All we have to do here is create an alias for foo. We do that by simply initializing a bar variable with a reference to the foo function.

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# endhighlight
end
```

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# endhighlight
end