判断滚动条是否滚动到底部

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$(function(){var nScrollHight = 0; //滚动距离总长(注意不是滚动条的长度)var nScrollTop = 0; //滚动到的当前位置var nDivHight = $("#agreement").height();$('#agreement').scroll(function(){nScrollHight = $(this)[0].scrollHeight;nScrollTop = $(this)[0].scrollTop;if(nScrollTop + nDivHight >= nScrollHight)//到底部});});