Does a trumpet have slide?

No, a trumpet does not have a slide. A trumpet is a brass instrument that produces sound by vibrating the player's lips against the mouthpiece. It is played by blowing air through the mouthpiece and varying the pitch of the sound by changing the shape of the player's lips and the tension of the air stream.

A trombone, on the other hand, is a brass instrument that does have a slide. The slide is a metal tube that moves in and out of the instrument's body. By moving the slide, the player can change the length of the instrument's tubing, which changes the pitch of the sound.