This paper investigates the problem of state feedback stabilization for a class of planar switched nonlinear systems (PSNSs) subject to Denial-of-Service (DoS) attacks. By incorporating a technique that adding a power integrator and developing switched dynamic event-triggered mechanisms (SDE-TMs), a continuous state feedback stabilizer is constructed. The SDE-TMs are intelligently designed by selecting appropriate parameters. The novelty of the proposed scheme lies in its unified design, which enables steady state feedback stabilization for PSNSs under DoS conditions, without necessitating any modifications to the controller gain parameters. Finally, one simulation is expressed to verify the effectiveness of the proposed algorithm.