First, try resetting the AC panel breaker for the dryer. Sometimes, one half of the breaker can trip without tripping the whole thing. You would then need to check for 240vac at the dryer cord connection block on the back of the dryer. The motor runs from 120vac but the heat runs from 240vac. If you have 240vac to the dryer and the connections at the cord terminal block are intact, then the possibilities include, timer, temp switch, thermal cutoff, operating thermostat, hi limit thermostat and motor switch. These are all in series in the heat circuit. You would need to do some troubleshooting with a multimeter to narrow down the failure unless you just want to swap parts til it's fixed.

Eric