javascript设置div坐标并使其由隐藏变为显示
上代码：
<head runat="server">
<title>问题</title>
<style type="text/css">
#div1
{
background: #A2B5CD;
height: 100px;
width: 150px;
}
</style>
<script language="javascript" type="text/javascript">
function ShowDiv() {
var leftdis = document.getElementById("textbox1").offsetLeft;
var topdis = document.getElementById("textbox1").offsetTop;
var _div = document.getElementById("div1");
var setleft = _div.style.left;
var settop = _div.style.top;
setleft = leftdis + "px";
settop = (topdis + 60) + "px";
alert(settop);//测试作用
document.getElementById("div1").style.display = "block";
}
function HiddDiv() {
document.getElementById("div1").style.display= "none";
}
</script>
</head>
<body>
<form id="form1" runat="server">
<asp:TextBox ID="textbox1" runat="server" onfocus="ShowDiv()" onblur="HiddDiv()" />
<div id="div1"style=" display:none ">
ABCDEFG</div>
</form>
</body>
</html>
[解决办法]
<!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 runat="server"> <title>问题</title> <style type="text/css"> #div1 { background: #A2B5CD; height: 100px; width: 150px; } </style> <script language="javascript" type="text/javascript"> function ShowDiv() { var leftdis = document.getElementById("textbox1").offsetLeft; var topdis = document.getElementById("textbox1").offsetTop; var _div = document.getElementById("div1"); //var setleft = _div.style.marginLeft; //var settop = _div.style.marginTop; // setleft = leftdis + "px"; //settop = (topdis + 60) + "px"; //alert(settop); //测试作用 _div.style.marginTop = (topdis + 60) + "px"; document.getElementById("div1").style.display = "block"; } function HiddDiv() { document.getElementById("div1").style.display = "none"; } </script></head><body> <form id="form1" runat="server"> <input type='text' id="textbox1" onfocus="ShowDiv()" onblur="HiddDiv()" style=' position:relative;' /> <div id="div1" style="display: none"> ABCDEFG</div> </form></body></html>