js 固定懸浮效果實現思路代碼

懸浮效果想必大家都不陌生吧本文為大家介紹下使用js固定懸浮的實現思路及代碼感興趣的朋友可以參考下   復制代碼 代碼如下:

　　
<script type="text/javascript">
(function($){
var ele_fix = $("#div_right"); //浮動窗口
var _main = $("main"); //浮動區域
var ele_offset_top = ele_fixoffset()top; //浮動區域高度
$(window)scroll(function(){
var scro_top = $(this)scrollTop(); //當前高度
var fix_foot_pos = parseInt(ele_fixheight())+parseInt(scro_top); //浮動框最底部到最頂部高度
var mainpos = parseInt(_mainoffset()top)+parseInt(_mainheight());
if(scro_top <= ele_offset_top&&fix_foot_pos<mainpos){
ele_fixcss({position: "static" top: });
}else if(scro_top>ele_offset_top&&fix_foot_pos<mainpos){
ele_fixcss({position: "fixed" top: });
}else if(scro_top>ele_offset_top&&fix_foot_pos>mainpos){
var posi = mainposfix_foot_pos;
ele_fixcss({position: "fixed" top: posi});
}
});


/*

//方案二
$(window)bind("scroll"function() {
var temp = ;
//判斷往下滾
if ($(document)scrollTop() > temp) { //如果大於這個高度就置頂
flag = false;
$(#div_right)css({position:fixed top:px margintop:px});
}

if ($(document)scrollTop() <= temp) { //如果小於這個高度則恢復原來狀態
flag = true;
$(#div_right)css(position);
}
});


*/

})(jQuery);
</script>

From:http://tw.wingwit.com/Article/program/Java/Javascript/201311/25362.html