JavaScript+div 半透明弹出层,function openNewDiv(_id) { var m = "mask"; if (docEle(_id)) document.removeChild(docEle(_id)); if (docEle(m)) document.removeChild(docEle(m)); // 新激活图层 var newDiv = document.createElement("div"); newDiv.id = _id; newDiv.style.position = "absolute"; newDiv.style.zIndex =