Time for action – making a links extraction function

Sometimes it's handy to create tests in a separate stack and then to take the function you've made into your application stack. The following points will help you in making a links extraction function:

1. Create a new Mainstack and save it, just to be safe!

2. Add a couple of fields and a button.

3. Set the button's script to this:

   on mouseUp
     put url "http://www.runrev.com/" into field 1
     put getLinks(field 1) into field 2
   end mouseUp

4. Edit the stack script and create a function for getLinks. Start with returning what it has sent:

   function getLinks pPageSource
     return pPageSource
   end getLinks

5. If you try clicking on the button at this point, you will see that the whole page source appears in field 2.

6. We're going to use the filter function, and it needs the text to be in separate lines. So, we want every link to be in a line of its own. The replace function can do this nicely. Add these two lines to the script (before the "return" line, of course!):

    ...