JQuery.BlockUI是众多JQuery插件弹出层中的一个，它小巧（原版16k，压缩后10左右）,容易使用, 功能齐全，支持Iframe，支持Modal，可定制性高也意味他默认谦虚的外表。
jQuery的BlockUI插件可以让你在使用AJAX时模拟同步行为，锁定浏览器(模式窗口)。当被激活时，它会防止用户活动的页面（或页面的一部分），直到它被禁用。 BlockUI添加元素的DOM，给它的外观和阻止用户交互行为。
1、首先引入插件
<script src="scripts/jquery2.0.2.js" type="text/javascript"></script>
<script src="scripts/jquery-block/jquery.blockUI.js" type="text/javascript"></script>
<script src="scripts/jquery-block/jquery.blockUI.js" type="text/javascript"></script>
2、调用
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<script src="scripts/jquery2.0.2.js" type="text/javascript"></script>
<script src="scripts/jquery-block/jquery.blockUI.js" type="text/javascript"></script>
<script type="text/javascript">
var hideDialog = function () {
$.unblockUI();
};
$(function () {
$("#btn1").click(function () {
//
$.blockUI();
window.setTimeout(hideDialog, 3000);
});
$("#btn2").click(function () {
//自定义消息内容
$.blockUI({ message: "正在提交" });
//$.blockUI({ message: '<h3><img src="busy.gif" /> Just a moment...</h3>' });
window.setTimeout(hideDialog, 3000);
});
$("#btn3").click(function () {
$.blockUI({
css: { 'backgroundColor': '#f00', color: '#fff' }
});
window.setTimeout(hideDialog, 3000);
});
$("#btn4").click(function () {
//定义弹出的信息为页面的某一个元素
$.blockUI({ message: $('#dom_element') });
window.setTimeout(hideDialog, 3000);
});
$("#btn5").click(function () {
//淡入 淡出 自动关闭时间
$.blockUI({ fadeIn: 700, fadeOut: 700, timeout: 2000 });
});
$("#btn6").click(function () {
//简单的气泡提示
$.growlUI('提示', '删除成功!');
});
$("#btn7").click(function () {
$.blockUI({
message: "正在提交，请稍候...",
css: {
border: 'none',
padding: '15px',
backgroundColor: '#000',
'-webkit-border-radius': '8px',
'-moz-border-radius': '8px',
opacity: 0.3,
color: '#fff'
}
});
window.setTimeout(hideDialog, 3000);
});
});
</script>
</head>
<body>
<button id="btn1">
弹出层</button>
<button id="btn2">
设置标题的弹出层</button>
<button id="btn3">
自定义样式</button>
<button id="btn7">
自定义标题与样式</button>
<button id="btn4">
定义弹出的消息是页面上的某个元素</button>
<button id="btn5">
淡入 淡出 自动关闭时间</button>
<button id="btn6">
简单的气泡提示</button>
<div style="width: 200px; height: 200px" id="dom_element">
页面元素
</div>
</body>
</html>
3、样式修改
jQuery blockUI 提供的默认样式过于朴素, 可以在每一次调用blockUI() 函数时进行修改. 也一次直接修改库文件 jquery.blockUI.js, 修改$.blockUI.defaults 对象相关的代码：
// override these in your code to change the default behavior and style
$.blockUI.defaults = {
// message displayed when blocking (use null for no message)
//弹出的消息
message: '<h1>Please wait...</h1>',
title: null, // title string; only used when theme == true
draggable: true, // only used when theme == true (requires jquery-ui.js to be loaded)
theme: false, // set to true to use with jQuery UI themes
// styles for the message when blocking; if you wish to disable
// these and use an external stylesheet then do this in your code:
// $.blockUI.defaults.css = {};
//默认定义的消息框的css样式
css: {
padding: 0,
margin: 0,
width: '30%',
top: '40%',
left: '35%',
textAlign: 'center',
color: '#000',
border: '3px solid #aaa',
backgroundColor:'#fff',
cursor: 'wait'
},
// minimal style set used when themes are used
themedCSS: {
width: '30%',
top: '40%',
left: '35%'
},
// styles for the overlay
//遮罩层的样式
overlayCSS: {
backgroundColor: '#000',
opacity: 0.6,
cursor: 'wait'
},
// style to replace wait cursor before unblocking to correct issue
// of lingering wait cursor
cursorReset: 'default',
// styles applied when using $.growlUI
// 使用$.growlUI完成自动气泡时的样式
growlCSS: {
width: '350px',
top: '10px',
left: '',
right: '10px',
border: 'none',
padding: '5px',
opacity: 0.6,
cursor: 'default',
color: '#fff',
backgroundColor: '#000',
'-webkit-border-radius':'10px',
'-moz-border-radius': '10px',
'border-radius': '10px'
},
// IE issues: 'about:blank' fails on HTTPS and javascript:false is s-l-o-w
// (hat tip to Jorge H. N. de Vasconcelos)
/*jshint scripturl:true */
iframeSrc: /^https/i.test(window.location.href || '') ? 'javascript:false' : 'about:blank',
// force usage of iframe in non-IE browsers (handy for blocking applets)
// 是否在非IE浏览器中使IFrame获得焦点，未验证的
forceIframe: false,
// z-index for the blocking overlay
// 遮罩层的Z-Index值，越大越在上面
baseZ: 1000,
// set these to true to have the message automatically centered
//是否居中
centerX: true, // <-- only effects element blocking (page block controlled via css above)
centerY: true,
// allow body element to be stetched in ie6; this makes blocking look better
// on "short" pages. disable if you wish to prevent changes to the body height
//是否允许拉大
//短的网页上。禁用如果你想防止车身高度的变化
allowBodyStretch: true,
// enable if you want key and mouse events to be disabled for content that is blocked
//遮罩时是否禁用键盘和鼠标事件
bindEvents: true,
// be default blockUI will supress tab navigation from leaving blocking content
// (if bindEvents is true)
//遮罩内容的Tab导航是否可用
constrainTabKey: true,
// fadeIn time in millis; set to 0 to disable fadeIn on block
fadeIn: 200,
// fadeOut time in millis; set to 0 to disable fadeOut on unblock
fadeOut: 400,
// time in millis to wait before auto-unblocking; set to 0 to disable auto-unblock
timeout: 0,
// disable if you don't want to show the overlay
//是否自动遮罩
showOverlay: true,
// if true, focus will be placed in the first available input field when
// page blocking
//自动获得焦点
focusInput: true,
// elements that can receive focus
focusableElements: ':input:enabled:visible',
// suppresses the use of overlay styles on FF/Linux (due to performance issues with opacity)
// no longer needed in 2012
// applyPlatformOpacityRules: true,
// callback method invoked when fadeIn has completed and blocking message is visible
onBlock: null,
// callback method invoked when unblocking has completed; the callback is
// passed the element that has been unblocked (which is the window object for page
// blocks) and the options that were passed to the unblock call:
// onUnblock(element, options)
//调用解封已完成时回调方法;
onUnblock: null,
// callback method invoked when the overlay area is clicked.
// setting this will turn the cursor to a pointer, otherwise cursor defined in overlayCss will be used.
onOverlayClick: null,
// don't ask; if you really must know: http://groups.google.com/group/jquery-en/browse_thread/thread/36640a8730503595/2f6a79a77a78e493#2f6a79a77a78e493
quirksmodeOffsetHack: 4,
// class name of the message block
blockMsgClass: 'blockMsg',
// if it is already blocked, then ignore it (don't unblock and reblock)
ignoreIfBlocked: false
};
以上简要介绍了Jquery.BlockUI的使用，欢迎大家指正和补充，详细内容可以访问官方网站