"You’re going to have jump for it" meaning

The jump is the internet’s term for the break in a web page’s main content for advertising. Some web content is written to be aware of these ad insertions and some are not. Advertising in this manner is a two-edged sword because while it tries to guarantee more views it also is a point where lots of people “give up” and move on not wanting to scroll past to get to the rest of the story after the “jump”. This story was written to acknowledge the jump and tried to use it to build suspense. But ironically, no advertising seems to be inserted between the intro paragraph and “the punchline”.

From Wiktionary:

after_the_jump
The World Wide Web version of “after the break.”

Used to introduce an inline advertisement in a webpage etc.
This story continues after the jump.