Jquery if $(window) 向下滚动功能

Question

提问by Val Do

hello I need when $(window)is scrolled down with 100%alert something how can I do it?

你好，我需要什么时候$(window)用100%警报向下滚动，我该怎么做？

Answer 1

Try:

尝试：

$(window).scroll(function() {
   if($(window).scrollTop() + $(window).height() == $(document).height()) {
       alert("END!");
   }
});

Answer 2

I used something like this once :)

我曾经用过这样的东西:)

   if($(window).scrollTop() + $(window).height() > $(document).height() - 50) {
                       //alert
}

Just play with the numbers, this one is built to pop out the alert just almost before the end of the scroll

只是玩数字，这个数字是为了在滚动结束前弹出警报

Answer 3

Try this one, When you scroll the page and if the page is reached to bottom, then alert message will get displayed.

试试这个，当您滚动页面时，如果页面到达底部，则会显示警报消息。

$(window).scroll(function() {
   if($(window).scrollTop() + $(window).height() == $(document).height()) {
       alert("Bottom Reached!");
   }
});