JavaScript for loop won't work

[Asperamanca]

The following code results in the error
Unexpected token `for'

I'm not a JavaScript expert, but it looks valid to me:

for (i=1;i<=10;i++)
    {
        // Do something
    }

for (i=1;i<=10;i++)
    {
        // Do something
    }

To copy to clipboard, switch view to plain text mode