由网友(心葬深海)分享简介：what's wrong with that?$('body').append("Upload successful!");$('.message').delay(2000).remove();I want to append a success...

what's wrong with that?

$('body').append("<div class='message success'>Upload successful!</div>");
$('.message').delay(2000).remove();

I want to append a success message to my html document, but only for 2sec. After that the div should be deleted again.

what am i doing wrong here?

regards

解决方案

Using setTimeout() directly (which .delay() uses internally) is simpler here, since .remove() isn't a queued function, overall it should look like this:

$('body').append("<div class='message success'>Upload successful!</div>");
setTimeout(function() {
  $('.message').remove();
}, 2000);

You can give it a try here.

.delay() is for the animation (or whatever named) queue, to use it you'd have to do something like:

$("<div class='message success'>Upload successful!</div>").appendTo('body')
  .delay(2000).queue(function() { $(this).remove(); });

Which works, here...but is just overkill and terribly inefficient, for the sake of chaining IMO. Normally you'd also have to call dequeue or the next function as well, but since you're removing the element anyway...