In the .ready() can not hide a element??

In the .ready() can not hide a element??


I have a lot operation in .ready ,and almost in the end , I want to
use $('#element').hide() to hide a element,but I find it
is no effect at all, more confuse is ,when a add a alert('abc') before
the $('#element').hide() sentence , it work well.Can someone tell me
more about this.Thanks for any tips.