Fungsi Javascript yang fungsinya seakan fungsi print_r PHP

function print_r(theObj){
  if(theObj.constructor == Array ||
     theObj.constructor == Object){
    document.write("
")
    for(var p in theObj){
      if(theObj[p].constructor == Array||
         theObj[p].constructor == Object){
document.write("
["+p+"] => "+typeof(theObj)+"
");
        document.write("
")
        print_r(theObj[p]);
        document.write("
")
      } else {
document.write("
["+p+"] => "+theObj[p]+"
");
      }
    }
    document.write("
")
  }
}

Selamat mencuba.