Check for text in textbox?

MIT App Inventor Help
1

How can I check for a set of text in a text box

2

Give us an example?

3

Let's say I have a web address and I want to extract the link part from it not the https:// part

4

Use the split block and split at // to get a list,
If the length of list is >= 2 then select the second item

Taifun