Their comments, she wrote, "reminds me how big the world is and how many more decent people there are than not".
The Harry Potter author previously tweeted that her "personal line [had] been crossed" by some abusive comments.
"It isn't always fun being a famous woman on Twitter and I believe in standing up to bullies," she wrote.
Rowling faced a flood of criticism on Twitter last year after it emerged she had donated Â£1m to the campaign for a No vote in the Scottish independence referendum.
In 2008, she donated the same amount to the Labour party.
On Friday the author revealed she had been called "a traitor" for her political views and had blocked some abusive Twitter users she believed had been supporters of the Scottish National Party (SNP).
"I feel no responsibility to hush up that kind of behaviour to protect the image of any political party," she told one Twitter user.
The 49-year-old also revealed she had "responded to other really nice SNP supporters" and had discussed "how much I had in common politically with many of them".
The writer also joked she would "bring marshmallows" after a Twitter user suggested her books should be burned in public.
The SNP took 56 of the 59 seats in Scotland in Thursday's election and is now the third largest party in the UK.

A foul smell led residents to the site in March.
The government says all the bodies were buried in a single night and include stillborn babies and unclaimed bodies.
But Human Rights Watch says they must check to see if any of the people killed during anti-government protests in January have been buried there.
Dozens of demonstrators died in protests over a proposed electoral law change which would have required a national census to be held before the presidential election could take place.
The US-based watchdog Human Rights Watch (HWR) has said that bodies went missing during the protests and also during government crackdowns on criminal gangs in the capital last year and in 2013.
Human rights workers first became aware of the burial site after residents of Maluku in Kinshasa reported a terrible smell near the local cemetery more than two weeks ago.
A woman working in the field then discovered a limb sticking out of the ground.
The DR Congo government has said that the bodies were all buried in individual graves on 19 March.
A spokesman said on Monday that there would be no exhumations of the bodies.

Mohammed Anwar, from Thornliebank, was trapped underneath the forklift when it appeared to hit a kerb, causing it to crash.
The incident happened at about 10:30 on Friday as Mr Anwar was driving along Glenburn Road in East Kilbride.
Emergency services attended but he died at the scene. There were no other vehicles involved.
Police Scotland said there were several people around at the time of the crash and officers are appealing to people who were in the area at the time to contact them.
JK Rowling has thanked Twitter users who offered words of support after she became a target for online abuse in the wake of the general election result.
[NEXT_CONCEPT]
The Democratic Republic of the Congo has been urged to investigate at least 421 bodies found in an unmarked burial ground in the capital, Kinshasa.
[NEXT_CONCEPT]
Police have named a 52-year-old man who died after the forklift truck he was driving toppled over.