Question

I am wondering if my jquery function is correct

<script>
window.blinker = setInterval(function(){
  if(window.alerta){
    $('a.cadastrotopo').css('color','#346698');
    $('a.cadastrotopo').css('text-decoration','underline');
      window.alerta=false;
    }
    else{
      $('a.cadastrotopo').css('color','#000');
      $('a.cadastrotopo').css('text-decoration','none');
      window.alerta = true;
    }
},500);
</script>

is working ok, but I wonder if I’m doing the right way.

I thank you.

Answer 1

Personally I would use CSS more, particularly classes:

a.cadostropo {
  color: #000;
  text-decoration: none;
}
a.alert { 
  color: #346698;
  text-decoration: underline;
}

and then the solution becomes trivial:

setInterval(toggleAlert, 500);

function toggleAlert() {
  $("a.cadostropo").toggleClass("alert");
}

One side note: instead of multiple css() calls you can use anonymous objects to specify multiple properties.

$("a.cadostropo").css({color: "#346698", textDecoration: "underline"});

That being said, I prefer not to use hardcoded CSS manipulation like this. Favour classes. They’re far more flexible and you don’t have to worry about destructive changes and rolling them back.