当用户设置“overflow:auto;”时会显示滚动条。用户可以从上到下滚动。问题是,当滚动条位于底部或顶部时,javascript / jquery如何检查?那么
if (is_scrollbar_top || is_scrollbar_end)
//do some thing..
那么有没有任何功能/方法来检查这种状态?感谢
更新:不工作 - 使用jquery ui对话框
HTML:
<div class = "dialog" id="dialog" title="Past Issues"></div>
的javascript:
$('#pastIssues').click(function (event) {
var issueString = 'product=Headline&year=2012&month=12';
$('.issues,#issuesBox').remove();
var dWidth = $(window).width() * 0.9;
var dHeight = $(window).height() * 0.9;
$( "#dialog" ).dialog({
height: dHeight,
width: dWidth,
modal: true,
draggable: false,
resizable: false,
});
get_past_issues(issueString,2012,12,event.type);
return false;
});
答案 0 :(得分:11)
HTML:
<div id="mydiv" style="overflow: auto; height: 500px"></div>
SCRIPT:
$(document).ready(function()
{
$("#mydiv").scroll(function()
{
var div = $(this);
if (div[0].scrollHeight - div.scrollTop() == div.height())
{
alert("Reached the bottom!");
}
else if(div.scrollTop() == 0)
{
alert("Reached the top!");
}
});
});
答案 1 :(得分:6)
检查
if($(window).scrollTop() == 0 || $(window).scrollTop() == $(document).height()- $(window).height()) {
// do something
}