Re: "bad tempered"??

What he said (in the 2nd debate) was:

“I didn’t think I’d say this but I’m going to say it, and I hate to say it, but if I win, I am going to instruct my attorney general to get a special prosecutor to look into your situation because there has never been so many lies, so much deception, there has never been anything like it and we’re going to have a special prosecutor.”

Then Hillary said:

"...it’s just awfully good that someone with the temperament of Donald Trump is not in charge of the law in our country.”

In reply, Don said:

“Because you would be in jail.”

So no, he didn't threaten to "throw her in jail." He suggested that with him as President he's appoint a special prosecutor to look at her alleged crimes (finally!), and she would probably end up in jail (because she's guilty as sin). At least that's how I parse his statements.

Of course the "Jail her" lie has now been enshrined in liberal lore for all eternity, so I'm wasting my time trying to correct the record here.