div+javascript实现popup

来源：互联网发布：黑龙江省网络选号编辑：程序博客网时间：2024/04/30 08:17

<html>
<body>
<form id="form1" runat="server">
<div style="border:solid 1px black; width:400px;padding:100px; ">
<br />
<input type="text" id="text1" /><br />
<input type= "button" id="btnShow" value="显示" onclick="showPopup('text1',20)"/>
<input type="button" id="btnClose" value="隐藏" onclick="removeDiv()"/>
 
</div>
</form>
</body>
</html>
<script language="JavaScript" type="text/javascript">
// JScript 文件

/////////
///DIV实现popup
/////////

///显示popup
///controlID表示要在它上面创建popup的ID
///height表示你所要创建的高度
function showPopup(controlID,height)
{

    var objControl = document.getElementById(controlID);
    var width = objControl.offsetWidth; //定义创建DIV的宽度
    //var top = calculateOffset(objControl, "offsetTop")-height-1;
    //var left = calculateOffset(objControl, "offsetLeft");//
    var r = getAbsolutePos(objControl);
    var top = r.y-height;
    var left = r.x;
// var widthGap = objControl.parentNode.offsetWidth - objControl.parentNode.clientWidth;
// var heightGap = objControl.parentNode.offsetHeight - objControl.parentNode.clientHeight;
    var objDiv = createDiv(top, left, width, height);
    objDiv.innerHTML="perfect life!";
    objControl.parentNode.appendChild(objDiv);

}

//计算字段的相对于html的偏移量(offsetTop和offsetLeft)
// function calculateOffset(field, attr)
// {
// var offset = 0;
// while (field)
// {
//      offset += field[attr];
//      //alert(field.nodeName);
//      field = field.offsetParent;
//
//
// }
// return offset;
// }
//创建一个DIV对象
function createDiv(top,left,width,height)
{
    var str = "<div id='divPopup' style='position:absolute;background-color:lightyellow'></div>";

</script>