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Employing the high spatio-temporal Interface Region Imaging Spectrograph 1330{\AA} observations, we investigated the jet-like features that occurred duringthe X8.2 class flare in NOAA active region (AR) 12673 on 2017 September 10.These jet-like features were rooted in the flare ribbons. We examined 15features, and the mean values of the lifetimes, projected widths, lengths andvelocities of these features were 87 s, 890 km, 2.7 Mm and 70 km s$^{-1}$,respectively. We also observed many jet-like features which happened during theX1.0 class flare on 2014 October 25. We studied the spectra at the base of ajet-like feature during its development. The Fe XXI 1354.08 {\AA} line in thecorona displays blueshift, while the Si IV 1402.77 {\AA} line in the transitionregion exhibits redshift, which indicates the chromospheric evaporation. Thisis the first time that the jet-like features are reported to be rooted in theflare ribbons, and we suggest that these jet-like features were driven by themechanism of chromospheric evaporation.

Solar jet-like features rooted in flare ribbons