class cls0{

   constructor(id, idtxt, params, jsonValue){

      this.id=id;                                                 // agregar ID
                                                                  //SACAR TEMPLATES
      this.tem  = document.querySelector("#temp-form");            //sacar temp-form
      this.tem_c = document.querySelector("#temp-card");          //sacar temp-card
      this.tem_r = document.querySelector("#temp-row-input");     //sacar temp-row-input

      this.f0 = document.createElement('div');                    //crear div para el temp-form

getLastContent() {
      let last;
      this.f0.querySelectorAll(".content-form").forEach(item=>{
         last = item;
      });
      return last;
   }