1.js

(function($) {
     
    $.alerts = {       
        alert: function(title, message, callback) {
            if( title == null ) title = 'Alert';
            $.alerts._show(title, message, null, 'alert', function(result) {
                if( callback ) callback(result);
            });
        },
         
        confirm: function(title, message, callback) {
            if( title == null ) title = 'Confirm';
            $.alerts._show(title, message, null, 'confirm', function(result) {
                if( callback ) callback(result);
            });
        },
             
        
        _show: function(title, msg, value, type, callback) {
          
                    var _html = "";
 
                    _html += '<div id="mb_box"></div><div id="mb_con"><span id="mb_tit">' + title + '</span>';
                    _html += '<div id="mb_msg">' + msg + '</div><div id="mb_btnbox">';
                      if (type == "alert") {
                      _html += '<input id="mb_btn_ok" type="button" value="確定" />';
                    }
                    if (type == "confirm") {
                      _html += '<input id="mb_btn_ok" type="button" value="確定" />';
                      _html += '<input id="mb_btn_no" type="button" value="取消" />';
                    }
                    _html += '</div></div>';
                 
                    //必須先將_html新增到body，再設定Css樣式
                    $("body").append(_html); GenerateCss();
         
            switch( type ) {
                case 'alert':
        
                    $("#mb_btn_ok").click( function() {
                        $.alerts._hide();
                        callback(true);
                    });
                    $("#mb_btn_ok").focus().keypress( function(e) {
                        if( e.keyCode == 13 || e.keyCode == 27 ) $("#mb_btn_ok").trigger('click');
                    });
                break;
                case 'confirm':
                   
                    $("#mb_btn_ok").click( function() {
                        $.alerts._hide();
                        if( callback ) callback(true);
                    });
                    $("#mb_btn_no").click( function() {
                        $.alerts._hide();
                        if( callback ) callback(false);
                    });
                    $("#mb_btn_no").focus();
                    $("#mb_btn_ok, #mb_btn_no").keypress( function(e) {
                        if( e.keyCode == 13 ) $("#mb_btn_ok").trigger('click');
                        if( e.keyCode == 27 ) $("#mb_btn_no").trigger('click');
                    });
                break;
              
               
            }
        },
        _hide: function() {
             $("#mb_box,#mb_con").remove();
        }
    }
    // Shortuct functions
    zdalert = function(title, message, callback) {
        $.alerts.alert(title, message, callback);
    }
     
    zdconfirm = function(title, message, callback) {
        $.alerts.confirm(title, message, callback);
    };
         
 
    
    
      //生成Css
  var GenerateCss = function () {
 
    $("#mb_box").css({ width: '100%', height: '100%', zIndex: '99999', position: 'fixed',
      filter: 'Alpha(opacity=60)', backgroundColor: 'black', top: '0', left: '0', opacity: '0.6'
    });
 
    $("#mb_con").css({ zIndex: '999999', width: '50%', position: 'fixed',
      backgroundColor: 'White', borderRadius: '15px'
    });
 
    $("#mb_tit").css({ display: 'block', fontSize: '14px', color: '#444', padding: '10px 15px',
      backgroundColor: '#DDD', borderRadius: '15px 15px 0 0',
      borderBottom: '3px solid #009BFE', fontWeight: 'bold'
    });
 
    $("#mb_msg").css({ padding: '20px', lineHeight: '20px',
      borderBottom: '1px dashed #DDD', fontSize: '13px'
    });
 
    $("#mb_ico").css({ display: 'block', position: 'absolute', right: '10px', top: '9px',
      border: '1px solid Gray', width: '18px', height: '18px', textAlign: 'center',
      lineHeight: '16px', cursor: 'pointer', borderRadius: '12px', fontFamily: '微軟雅黑'
    });
 
    $("#mb_btnbox").css({ margin: '15px 0 10px 0', textAlign: 'center' });
    $("#mb_btn_ok,#mb_btn_no").css({ width: '85px', height: '30px', color: 'white', border: 'none' });
    $("#mb_btn_ok").css({ backgroundColor: '#168bbb' });
    $("#mb_btn_no").css({ backgroundColor: 'gray', marginLeft: '20px' });
 
 
    //右上角關閉按鈕hover樣式
    $("#mb_ico").hover(function () {
      $(this).css({ backgroundColor: 'Red', color: 'White' });
    }, function () {
      $(this).css({ backgroundColor: '#DDD', color: 'black' });
    });
 
    var _widht = document.documentElement.clientWidth; //螢幕寬
    var _height = document.documentElement.clientHeight; //螢幕高
 
    var boxWidth = $("#mb_con").width();
    var boxHeight = $("#mb_con").height();
 
    //讓提示框居中
    $("#mb_con").css({ top: (_height - boxHeight) / 2 + "px", left: (_widht - boxWidth) / 2 + "px" });
  }
 

})(jQuery);
 

2.呼叫例子

<!doctype html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
  <title>模擬alert和confirm提示框</title>
</head>
<body>
  <input id="add" type="button" value="新增" />
  <input id="update" type="button" value="修改" />
 
<script src="wei-js/jquery-1.10.1.min.js" type="text/javascript"></script>
<script src="wei-js/myalert.js" type="text/javascript"></script>
  <script type="text/javascript">
 
    $("#add").bind("click", function () {
      // $.MsgBox.Alert("訊息", "哈哈，新增成功！");

         zdalert('系統提示','請輸入正確數值',function(){ 
         
         //要回調的方法
          window.location.href="http://www.baidu.com"});
     
    });
 
   
    //也可以傳方法名 test
    $("#update").bind("click", function () {


      // $.MsgBox.Confirm("溫馨提示", "確定要進行修改嗎？", test);
      
      zdconfirm('系統確認框','你確認提交該條資料嗎',function(r){
     if(r)
      {
         //...點確定之後執行的內容
         
         window.location.href="http://www.baidu.com"
      }
    });     
      

    });
 

  </script>
</body>
</html>