切换真假

Question

I would like to know how I can toggle this true into false and vise versa:

function step1(enabled, withDialog) {
  if (enabled != undefined && !enabled)
    return;

  var dialogMode = (withDialog ? DialogModes.ALL : DialogModes.NO);
  var desc1 = new ActionDescriptor();
  var ref1 = new ActionReference();
  ref1.putEnumerated(cTID('Chnl'), cTID('Chnl'), cTID('Msk '));
  desc1.putReference(cTID('null'), ref1);
  desc1.putBoolean(cTID('MkVs'), true);
  executeAction(cTID('slct'), desc1, dialogMode);

};

if (a == false) {
  !a = true;
} else if (a == true) {
  !a = false;
}

Answer 1

I don't know which variable you want to toggle in your code, but taking your comment:

if(a == false) { a = true; } else if (a == true) { a = false; }

You can change it to:

a = !a;