alert带有地址，重新写一个全局alert

window.alert = function(msg, callback) {
  var div = document.createElement('div');
  div.innerHTML =
    '<style type="text/css">' +
    '.nbaMask { position: fixed; z-index: 1000; top: 0; right: 0; left: 0; bottom: 0; background: rgba(0, 0, 0, 0.5); }                                                                                                                                                                       ' +
    '.nbaMaskTransparent { position: fixed; z-index: 1000; top: 0; right: 0; left: 0; bottom: 0; }                                                                                                                                                                                            ' +
    '.nbaDialog { position: fixed; z-index: 5000; width: 80%; max-width: 300px; top: 50%; left: 50%; -webkit-transform: translate(-50%, -50%); transform: translate(-50%, -50%); background-color: #fff; text-align: center; border-radius: 8px; overflow: hidden; opacity: 1; color: white; }' +
    '.nbaDialog .nbaDialogHd { padding: .2rem .27rem .08rem .27rem; }                                                                                                                                                                                                                         ' +
    '.nbaDialog .nbaDialogHd .nbaDialogTitle { font-size: 17px; font-weight: 400; }                                                                                                                                                                                                           ' +
    '.nbaDialog .nbaDialogBd { padding: 0 .27rem; font-size: 15px; line-height: 4; word-wrap: break-word; word-break: break-all; color: #000000; }                                                                                                                                          ' +
    '.nbaDialog .nbaDialogFt { position: relative; line-height: 48px; font-size: 17px; display: -webkit-box; display: -webkit-flex; display: flex; }                                                                                                                                          ' +
    '.nbaDialog .nbaDialogFt:after { content: " "; position: absolute; left: 0; top: 0; right: 0; height: 1px; border-top: 1px solid #e6e6e6; color: #e6e6e6; -webkit-transform-origin: 0 0; transform-origin: 0 0; -webkit-transform: scaleY(0.5); transform: scaleY(0.5); }               ' +
    '.nbaDialog .nbaDialogBtn { display: block; -webkit-box-flex: 1; -webkit-flex: 1; flex: 1; color: #09BB07; text-decoration: none; -webkit-tap-highlight-color: transparent; position: relative; margin-bottom: 0; }                                                                       ' +
    '.nbaDialog .nbaDialogBtn:after { content: " "; position: absolute; left: 0; top: 0; width: 1px; bottom: 0; border-left: 1px solid #e6e6e6; color: #e6e6e6; -webkit-transform-origin: 0 0; transform-origin: 0 0; -webkit-transform: scaleX(0.5); transform: scaleX(0.5); }             ' +
    '.nbaDialog a { text-decoration: none; -webkit-tap-highlight-color: transparent; }' +
    '</style>' +
    '<div id="dialogs2" style="display: none">' +
    '<div class="nbaMask"></div>' +
    '<div class="nbaDialog">' +
    '	<div class="nbaDialogHd">' +
    '		<strong class="nbaDialogTitle"></strong>' +
    '	</div>' +
    '	<div class="nbaDialogBd" id="dialog_msg2">弹窗内容，告知当前状态、信息和解决方法，描述文字尽量控制在三行内</div>' +
    '	<div class="nbaDialogHd">' +
    '		<strong class="nbaDialogTitle"></strong>' +
    '	</div>' +
    '	<div class="nbaDialogFt">' +
    '		<a href="javascript:;" class="nbaDialogBtn nbaDialogBtnPrimary" id="dialog_ok2">确定</a>' +
    '	</div></div></div>';
  document.body.appendChild(div);

  var dialogs2 = document.getElementById('dialogs2');
  dialogs2.style.display = 'block';

  var dialog_msg2 = document.getElementById('dialog_msg2');
  dialog_msg2.innerHTML = msg;

   var dialog_cancel = document.getElementById("dialog_cancel");
   dialog_cancel.onclick = function() {
   dialogs2.style.display = 'none';
   };
  var dialog_ok2 = document.getElementById('dialog_ok2');
  dialog_ok2.onclick = function() {
    dialogs2.style.display = 'none';
    callback();
  };
};

例如：

alert(111)