jquery智慧彈出層,自動判斷位置

life66881發表於2015-03-16
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>jquery彈出層浮動層程式碼</title>
<script src="/ajaxjs/jquery1.3.2.js" type="text/javascript"></script>
<style>
*{ margin:0; padding:0}
body{ margin:0; padding:0; font-size:12px}
ul,li{ list-style:none}
ul{position:relative;top:-3px; left:-3px;border:1px solid #ccc; background:#fff;}
li{height:23px;line-height:23px;cursor:default; padding:0 0 0 10px}
li.current{background:#eee}
.wrap{ width:158px; background:#eee; position:absolute;}
</style>
<script type="text/javascript">
$(function(){
$(".wrap").hide();
var objW=$(".wrap").width();
var objH=$(".wrap").height();
$(document).mousedown(function(e){
var selfX=objW+e.pageX;
var selfY=objH+e.pageY
var bodyW=document.documentElement.clientWidth+document.documentElement.scrollLeft;
var bodyH=document.documentElement.clientHeight+document.documentElement.scrollTop;
if(selfX>bodyW && selfY>bodyH){
$(".wrap").css({top:(bodyH-objH),left:(bodyW-objW)}).show();
}else if(selfY>bodyH){
$(".wrap").css({top:(bodyH-objH),left:e.pageX}).show();
}else if(selfX>bodyW){
$(".wrap").css({top:e.pageY,left:(bodyW-objW)}).show();
}else{
$(".wrap").css({top:e.pageY,left:e.pageX}).show();
}
})
$("li").hover(function(){
$(this).addClass("current");
},function(){
$(this).removeClass("current");
}).click(function(){
alert($(this).text())
$(this).parent().parent().hide();
})
})
</script>
</head>
<body>
<div style="height:800px;width:900px">&nbsp;</div>
<div style="position:absolute;top:300px;left:300px"><span style="color:#f00;font-size:28px">請按F5重新整理,才能看到效果,</span><br>點選滑鼠左鍵,彈出層,<br>在最右邊點選時


層自動往左移</div>
<div class="wrap">
<ul onmousedown="event.cancelBubble = true">
<li>連江</li>
<li>寧德</li>
<li>福州</li>
<li>廈門</li>
<li>北京</li>
</ul>
</div>
<div><A href="http://www.999jiujiu.com/">http://www.999jiujiu.com/</A></div>
</body>
</html>

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