个回答

• 慕用2276564

  2017-05-23 12:20:26

  已采纳

  window.alert = function(str) 
  { 
  var shield = document.createElement("DIV"); 
  shield.id = "shield"; 
  shield.style.position = "absolute"; 
  shield.style.left = "0px"; 
  shield.style.top = "0px"; 
  shield.style.width = "100%"; 
  shield.style.height = document.body.scrollHeight+"px"; 
  //弹出对话框时的背景颜色 
  shield.style.background = "#fff"; 
  shield.style.textAlign = "center"; 
  shield.style.zIndex = "25"; 
  //背景透明 IE有效 
  //shield.style.filter = "alpha(opacity=0)"; 
  var alertFram = document.createElement("DIV"); 
  alertFram.id="alertFram"; 
  alertFram.style.position = "absolute"; 
  alertFram.style.left = "50%"; 
  alertFram.style.top = "50%"; 
  alertFram.style.marginLeft = "-225px"; 
  alertFram.style.marginTop = "-75px"; 
  alertFram.style.width = "450px"; 
  alertFram.style.height = "150px"; 
  alertFram.style.background = "#ff0000"; 
  alertFram.style.textAlign = "center"; 
  alertFram.style.lineHeight = "150px"; 
  alertFram.style.zIndex = "300"; 
  strHtml = "<ul style=\"list-style:none;margin:0px;padding:0px;width:100%\">\n"; 
  strHtml += " <li style=\"background:#DD828D;text-align:left;padding-left:20px;font-size:14px;font-weight:bold;height:25px;line-height:25px;border:1px solid #F9CADE;\">[自定义提示]</li>\n"; 
  strHtml += " <li style=\"background:#fff;text-align:center;font-size:12px;height:120px;line-height:120px;border-left:1px solid #F9CADE;border-right:1px solid #F9CADE;\">"+str+"</li>\n"; 
  strHtml += " <li style=\"background:#FDEEF4;text-align:center;font-weight:bold;height:25px;line-height:25px; border:1px solid #F9CADE;\"><input type=\"button\" value=\"确 定\" onclick=\"doOk()\" /></li>\n"; 
  strHtml += "</ul>\n"; 
  alertFram.innerHTML = strHtml; 
  document.body.appendChild(alertFram); 
  document.body.appendChild(shield); 
  var ad = setInterval("doAlpha()",5); 
  this.doOk = function(){ 
  alertFram.style.display = "none"; 
  shield.style.display = "none"; 
  } 
  alertFram.focus(); 
  document.body.onselectstart = function(){return false;}; 
  }

  0

• qq_张武林_0

  2017-08-08 15:22:54

  请问点击确定后为什么不返回呢，还是弹出框
  

  0