How to animate jquery effects simultaneously

for example I have 2 jquery effects and 3 object:

$('.test1').fad开发者_Python百科eIn();
$('.test2').fadeOut();
$('.test3').fadeOut();

when .test1 fades in .test2 and .test3 must fade out simultaneously. how can I do it without extra plugin and without opacity animation?

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you can use the callback for achieving the same

$('.test1').fadeIn('slow', function() {
      $('.test2').fadeOut();
      $('.test3').fadeOut();
});

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$(".test1").fadeIn("fast",function(){$(".test2,.test3").fadeOut()});