[How to] If variable is empty, break loop and move to next

[cezar]

I made a bot which takes image url from site A and posts it on site B. Sometimes there is no image url on site A and bot posts blank post (without image) on site B. I want to make a bot break if there is no image url. I tried IF logic function:
IF
[[LINK_URL]]==null
Break

But it doesn't work, i tried also
IF
[[LINK_URL]]==0
Break

doesn't work neither. How to do that?

[tet-vivi]

@cezar typeof( [[LINK_URL]] ) === "undefined"?
or [[LINK_URL]] to console log

[boozer]

@tet-vivi said in [How to] If variable is empty, break loop and move to next:

===

Are we supposed to use 3 "=" ? ie ===
or 2

i thought it was typeof( [[LINK_URL]] ) == "undefined"

[cezar]

It doesn't work, i tried

[Fox]

@cezar said in [How to] If variable is empty, break loop and move to next:

It doesn't work, i tried

Before setting conditions, you should find out what value is in the variable if the image is not found. Most likely this condition will work:

[[LINK_URL]] == ""

[cezar]

Yes, when image is not found [[LINK_URL]] is empty value

[HNB]

@Fox Thank you for this info.
I think it is the right place to ask how to do the reverse work.
I do mean i would like to set a variable to empty. I have the error message : Variable value is empty

Thanks a lot for the time

Edit : Oh my Bad sorry!
I forgot i ve seen previously in the forum that increasing variable with 0 was doing it!
So problem solved!