自定义alert弹出框

自定义alert ，confirm弹出框代码如下

(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 += '<button id="mb_btn_ok" value="确定" >确定</button>';

}

if (type == "confirm") {

_html += '<button id="mb_btn_ok" value="确定" >确定</button>';

_html += '<button id="mb_btn_no" value="取消" />取消</button>';

}

_html += '</div></div>';

//必须先将_html添加到body，再设置Css样式

$("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();

}

}

myAlert = function(title, message, callback) {

$.alerts.alert(title, message, callback);

}

myConfirm = 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', textAlign: 'center',

backgroundColor: '#DDD', borderRadius: '15px 15px 0 0',

borderBottom: '3px solid #39B867', fontWeight: 'bold'

});

$("#mb_msg").css({ padding: '20px', lineHeight: '20px', textAlign: 'center',

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: '微软雅黑'

});

$("#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: '#39B867' });

$("#mb_btn_no").css({ backgroundColor: 'gray', marginLeft: '20px' });

//右上角关闭按钮hover样式

$("#mb_ico").hover(function () {

$(this).css({ backgroundColor: 'Red', color: 'White' });

}, function () {

$(this).css({ backgroundColor: '#DDD', color: 'black' });

});

var _widht = document.documentElement.clientWidth; //屏幕宽

var _height = document.documentElement.clientHeight; //屏幕高

var boxWidth = $("#mb_con").width();

var boxHeight = $("#mb_con").height();

//让提示框居中

$("#mb_con").css({ top: (_height - boxHeight) / 2 + "px", left: (_widht - boxWidth) / 2 + "px" });

}

})(jQuery);