The song has had over 2.1 million views since being unveiled on the Yash Raj Films channel on September 30.
The Bollywood star shared the statistics with the message: "Thank u everyone..."
The first song to release from Yash Chopra's upcoming film was shot in London earlier this year between February 22 and March 25.
With lyrics by Gulzar, music by AR Rahman and performance by Punjabi-Sufiyana singer Rabbi Shergill, the guitar riff in the track has drawn comparisons with Eagle-Eye Cherry's 1997 hit 'Save Tonight'.
A club song, shot at Leake Street's 'Banksy Tunnel' near Waterloo Station, is scheduled to promo later this month.
Choreographed by Vaibhavi Merchant, the instrumental percussion track features Khan and Katrina Kaif performing with street dancers at an underground club venue.
A raised lift in the upcoming video has been filmed by stunt doubles dressed as the two stars.
Jab Tak Hai Jaan releases on November 13.