iOS 移动端(H5)alert 提示信息去除网址(URL)

alert

  window.alert = function(name){
      var iframe = document.createElement("IFRAME");
      iframe.style.display="none";
      iframe.setAttribute("src", 'data:text/plain,');
      document.documentElement.appendChild(iframe);
      window.frames[0].window.alert(name);
      iframe.parentNode.removeChild(iframe);
  };

confirm

  window.confirm = function (message) {
    var iframe = document.createElement("IFRAME");
    iframe.style.display = "none";
    iframe.setAttribute("src", 'data:text/plain,');
    document.documentElement.appendChild(iframe);
    var alertFrame = window.frames[0];
    var result = alertFrame.window.confirm(message);
    iframe.parentNode.removeChild(iframe);
    return result;
  };