爱站程序员基地jQuery Alert Dialogs，又一个基于jQuery的提示框插件，主要包括Alert、Confirm、prompt这三种，还有一个高级范例，可以在提示框内嵌入HTML语言，可以自定义风格样式。jQuery的提示框插件有很多种，每一款都是出自不同的高人之手，因此都比较有自己的特点，包括风格和使用方法等。
效果体验：http://keleyi.com/keleyi/phtml/jqplug/
英文版：http://keleyi.com/keleyi/phtml/jqplug/1.htm
这个Jquery插件的目的是替代JavaScript的标准函数alert()，confirm（），和 prompt（）。这个插件有如下这些特点：
1：这个插件可以使你可以支持你自己的css制定。使你的网站看起来更专业。
2：允许你自定义对话框的标题。
3：在ＩＥ７中，可以使你避免使用JavaScript 的prompt()函数带来的页面重新加载。
4：这些方法都模拟了Windows的模式对话框。在你改变改变浏览器窗口大小时候，它能够自适应用户
窗口的调整。
5：如果你引入了jQuery UI Draggable plugin插件，那这个插件也可以被自由拖动。
jquery.alerts.js代码：
// Download by http://keleyi.com// 由 柯乐义 改进改插件，使插件适用于新版的jquery（比如1.10.1） 版本// Visit http://keleyi.com/a/bjac/no0m3cb1.htm for more information//// Usage:// jAlert( message, [title, callback] )// jConfirm( message, [title, callback] )// jPrompt( message, [value, title, callback] )//// History://// 1.00 - Released (29 December 2008)// 2013-7-8(function($) {$.alerts = {// These properties can be read/written by accessing $.alerts.propertyName from your scripts at any timeverticalOffset: -75, // vertical offset of the dialog from center screen, in pixelshorizontalOffset: 0, // horizontal offset of the dialog from center screen, in pixels/repositionOnResize: true, // re-centers the dialog on window resizeoverlayOpacity: .01, // transparency level of overlayoverlayColor: \'#FFF\', // base color of overlaydraggable: true, // make the dialogs draggable (requires UI Draggables plugin)okButton: \' OK \', // text for the OK buttoncancelButton: \' Cancel \', // text for the Cancel buttondialogClass: null, // if specified, this class will be applied to all dialogs// Public methodsalert: function(message, title, callback) {if( title == null ) title = \'Alert\';$.alerts._show(title, message, null, \'alert\', function(result) {if( callback ) callback(result);});},confirm: function(message, title, callback) {if( title == null ) title = \'Confirm\';$.alerts._show(title, message, null, \'confirm\', function(result) {if( callback ) callback(result);});},prompt: function(message, value, title, callback) {if( title == null ) title = \'Prompt\';$.alerts._show(title, message, value, \'prompt\', function(result) {if( callback ) callback(result);});},// Private methods_show: function(title, msg, value, type, callback) {$.alerts._hide();$.alerts._overlay(\'show\');$(\"BODY\").append(\'<div id=\"popup_container\">\' +\'<h1 id=\"popup_title\"></h1>\' +\'<div id=\"popup_content\">\' +\'<div id=\"popup_message\"></div>\' +\'</div>\' +\'</div>\');if( $.alerts.dialogClass ) $(\"#popup_container\").addClass($.alerts.dialogClass);// IE6 Fixvar pos = (\'undefined\' == typeof (document.body.style.maxHeight)) ? \'absolute\' : \'fixed\';$(\"#popup_container\").css({position: pos,zIndex: 99999,padding: 0,margin: 0});$(\"#popup_title\").text(title);$(\"#popup_content\").addClass(type);$(\"#popup_message\").text(msg);$(\"#popup_message\").html( $(\"#popup_message\").text().replace(/\\n/g, \'<br />\') );$(\"#popup_container\").css({minWidth: $(\"#popup_container\").outerWidth(),maxWidth: $(\"#popup_container\").outerWidth()});$.alerts._reposition();$.alerts._maintainPosition(true);switch( type ) {case \'alert\':$(\"#popup_message\").after(\'<div id=\"popup_panel\"><input type=\"button\" value=\"\' + $.alerts.okButton + \'\" id=\"popup_ok\" /></div>\');$(\"#popup_ok\").click( function() {$.alerts._hide();callback(true);});$(\"#popup_ok\").focus().keypress( function(e) {if( e.keyCode == 13 || e.keyCode == 27 ) $(\"#popup_ok\").trigger(\'click\');});break;case \'confirm\':$(\"#popup_message\").after(\'<div id=\"popup_panel\"><input type=\"button\" value=\"\' + $.alerts.okButton + \'\" id=\"popup_ok\" /> <input type=\"button\" value=\"\' + $.alerts.cancelButton + \'\" id=\"popup_cancel\" /></div>\');$(\"#popup_ok\").click( function() {$.alerts._hide();if( callback ) callback(true);});$(\"#popup_cancel\").click( function() {$.alerts._hide();if( callback ) callback(false);});$(\"#popup_ok\").focus();$(\"#popup_ok, #popup_cancel\").keypress( function(e) {if( e.keyCode == 13 ) $(\"#popup_ok\").trigger(\'click\');if( e.keyCode == 27 ) $(\"#popup_cancel\").trigger(\'click\');});break;case \'prompt\':$(\"#popup_message\").append(\'<br /><input type=\"text\" size=\"30\" id=\"popup_prompt\" />\').after(\'<div id=\"popup_panel\"><input type=\"button\" value=\"\' + $.alerts.okButton + \'\" id=\"popup_ok\" /> <input type=\"button\" value=\"\' + $.alerts.cancelButton + \'\" id=\"popup_cancel\" /></div>\');$(\"#popup_prompt\").width( $(\"#popup_message\").width() );$(\"#popup_ok\").click( function() {var val = $(\"#popup_prompt\").val();$.alerts._hide();if( callback ) callback( val );});$(\"#popup_cancel\").click( function() {$.alerts._hide();if( callback ) callback( null );});$(\"#popup_prompt, #popup_ok, #popup_cancel\").keypress( function(e) {if( e.keyCode == 13 ) $(\"#popup_ok\").trigger(\'click\');if( e.keyCode == 27 ) $(\"#popup_cancel\").trigger(\'click\');});if( value ) $(\"#popup_prompt\").val(value);$(\"#popup_prompt\").focus().select();break;}// Make draggableif( $.alerts.draggable ) {try {$(\"#popup_container\").draggable({ handle: $(\"#popup_title\") });$(\"#popup_title\").css({ cursor: \'move\' });} catch(e) { /* requires jQuery UI draggables */ }}},_hide: function() {$(\"#popup_container\").remove();$.alerts._overlay(\'hide\');$.alerts._maintainPosition(false);},_overlay: function(status) {switch( status ) {case \'show\':$.alerts._overlay(\'hide\');$(\"BODY\").append(\'<div id=\"popup_overlay\"></div>\');$(\"#popup_overlay\").css({position: \'absolute\',zIndex: 99998,top: \'0px\',left: \'0px\',width: \'100%\',height: $(document).height(),background: $.alerts.overlayColor,opacity: $.alerts.overlayOpacity});break;case \'hide\':$(\"#popup_overlay\").remove();break;}},_reposition: function() {var top = (($(window).height() / 2) - ($(\"#popup_container\").outerHeight() / 2)) + $.alerts.verticalOffset;var left = (($(window).width() / 2) - ($(\"#popup_container\").outerWidth() / 2)) + $.alerts.horizontalOffset;if( top < 0 ) top = 0;if( left < 0 ) left = 0;// IE6 fixif (\'undefined\' == typeof (document.body.style.maxHeight)) top = top + $(window).scrollTop();$(\"#popup_container\").css({top: top + \'px\',left: left + \'px\'});$(\"#popup_overlay\").height( $(document).height() );},_maintainPosition: function(status) {if( $.alerts.repositionOnResize ) {switch(status) {case true:$(window).bind(\'resize\', function() {$.alerts._reposition();});break;case false:$(window).unbind(\'resize\');break;}}}}// Shortuct functionsjAlert = function(message, title, callback) {$.alerts.alert(message, title, callback);}jConfirm = function(message, title, callback) {$.alerts.confirm(message, title, callback);};jPrompt = function(message, value, title, callback) {$.alerts.prompt(message, value, title, callback);};})(jQuery);
CSS代码：
#popup_container {font-family: Arial, sans-serif;font-size: 12px;min-width: 300px; /* Dialog will be no smaller than this */max-width: 600px; /* Dialog will wrap after this width */background: #FFF;border: solid 5px #999;color: #000;-moz-border-radius: 5px;-webkit-border-radius: 5px;border-radius: 5px;}/* http://keleyi.com 柯乐义*/#popup_title {font-size: 14px;font-weight: bold;text-align: center;line-height: 1.75em;color: #666;background: #CCC url(images/title.gif) top repeat-x;border: solid 1px #FFF;border-bottom: solid 1px #999;cursor: default;padding: 0em;margin: 0em;}#popup_content {background: 16px 16px no-repeat url(http://keleyi.com/keleyi/phtml/jqplug/index/info.gif);padding: 1em 1.75em;margin: 0em;}#popup_content.alert {background-image: url(http://keleyi.com/keleyi/phtml/jqplug/index/info.gif);}#popup_content.confirm {background-image: url(http://keleyi.com/keleyi/phtml/jqplug/index/important.gif);}#popup_content.prompt {background-image: url(http://keleyi.com/keleyi/phtml/jqplug/index/help.gif);}#popup_message {padding-left: 48px;}#popup_panel {text-align: center;margin: 1em 0em 0em 1em;}#popup_prompt {margin: .5em 0em;}
还需引用：
<script type=\”text/javascript\” src=\”http://keleyi.com/keleyi/pmedia/jquery-1.9.1.min.js\”></script>
<script src=\”http://keleyi.com/keleyi/pmedia/jquery/ui/1.10.3/js/jquery-ui-1.10.3.min.js\” type=\”text/javascript\”></script>
更多信息请访问：http://keleyi.com/a/bjac/no0m3cb1.htm
