js实现div弹框和关闭

来源：互联网发布：夏普网络扫描仪工具编辑：程序博客网时间：2024/06/09 22:36
<!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=gbk" /><title>JS弹出可拖拽可关闭的div层</title><style>html,body{height:100%;overflow:hidden;}body,div,h2{margin:0;padding:0;}body{font:12px/1.5 Tahoma;}center{padding-top:10px;}button{cursor:pointer;}#win{position:absolute;top:50%;left:50%;width:400px;height:200px;background:#fff;border:4px solid #f90;margin:-102px 0 0 -202px;display:none;}h2{font-size:12px;height:18px;text-align:right;background:#FC0;border-bottom:3px solid #f90;padding:5px;cursor:move;}h2 span{color:#f90;cursor:pointer;background:#fff;border:1px solid #f90;padding:0 2px;}</style><script>window.onload = function (){ var oWin = document.getElementById("win"); var oBtn = document.getElementsByTagName("button")[0]; var oClose = document.getElementById("close"); var oH2 = oWin.getElementsByTagName("h2")[0]; var bDrag = false; var disX = disY = 0; oBtn.onclick = function () {  oWin.style.display = "block"  }; oClose.onclick = function () {  oWin.style.display = "none"   }; oClose.onmousedown = function (event) {  (event || window.event).cancelBubble = true; }; oH2.onmousedown = function (event) {    var event = event || window.event;  bDrag = true;  disX = event.clientX - oWin.offsetLeft;  disY = event.clientY - oWin.offsetTop;    this.setCapture && this.setCapture();    return false }; document.onmousemove = function (event) {  if (!bDrag) return;  var event = event || window.event;  var iL = event.clientX - disX;  var iT = event.clientY - disY;  var maxL = document.documentElement.clientWidth - oWin.offsetWidth;  var maxT = document.documentElement.clientHeight - oWin.offsetHeight;    iL = iL < 0 ? 0 : iL;  iL = iL > maxL ? maxL : iL;     iT = iT < 0 ? 0 : iT;  iT = iT > maxT ? maxT : iT;    oWin.style.marginTop = oWin.style.marginLeft = 0;  oWin.style.left = iL + "px";  oWin.style.top = iT + "px";    return false }; document.onmouseup = window.onblur = oH2.onlosecapture = function () {  bDrag = false;      oH2.releaseCapture && oH2.releaseCapture(); };};</script></head><body><div id="win"><h2><span id="close">×</span></h2></div><center><button>弹出层</button></center></body></html>
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