Why isn't this while-clause true?

Scripting Forums AppleScript | Mac OS X
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#1

I have a simple function that wait for a webpage in Safari to be empty:

	repeat while document 1's source = ""
		log "source:" & document 1's source & ":"
		delay 0.5
	end repeat

Despite that this log-statement outputs:

source::

It doesn’t exit the loop.

According to https://programmingmonkeys.com/what-are-the-different-applescript-comparison-operators-for-strings = should work for string comparisons.

I have tried to hex dump the output and there is nothing hidden there.

#2

Actually the code does wait for a webpage in Safari not to be empty.

The loop will be executed as long as source is empty

1 Like
#3

Sorry, I was unclear and hadn’t really thought the question through.

Here is the whole context:

on finishedLoading(URLtoLoad)
	tell application "Safari"
		set URL of document 1 to "about:blank"
		repeat until document 1's source = ""
			delay 0.5
		end repeat
		set URL of document 1 to URLtoLoad
		repeat while document 1's source = ""
			log "source3:" & document 1's source & ":"
			delay 0.5
		end repeat

The issue is not the loop - it is the fact that setting the URL of the document doesn’t have any effect. As you can see, I want to be sure that the window is empty before I set the URL to a regular web page. But for some reason that line most of the time doesn’t have any effect (it does work sometimes).

#4

why are you setting the URL to blank first, just put it to the URLToLoad

Also the script works for me