.each
HTML
<a rel="0">0</a>
<a rel="1">1</a>
<a rel="2">2</a>
<a rel="3">3</a>
<a rel="4">4</a>
JavaScript
var x = 2;
$('a').each(function(){
var _this = $(this);
if (_this.attr('rel') == x) {
_this.hide();
} else {
// else
}
});