blockUI弹出层
首先先附上代码：
1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> 2 <html ="http://www.w3.org/1999/xhtml" ="en"> 3 <head> 4 <meta http-equiv="Content-Type" content="text/html;charset=UTF-8" /> 5 <title>blockUI（弹出层）</title> 6 <style type="text/css"> 7 #demo { 8 width:100px; 9 height:24px;10 text-align:center;11 }12 #displayBox{13 display:none;14 }15 </style>16 </head>17 <body>18 <button id="demo">点击弹出</button>19 <div id="displayBox">20 这里是弹出层显示的内容！！！<br /><br /><br /><a href="javascript:void(0);" onclick="$.unblockUI();return false;" title="点击关闭">点击关闭</a>21 </div>22 </body>23 </html>24 <script type="text/javascript" src="jquery.min.js"></script>25 <script type="text/javascript" src="jquery.blockUI.js"></script>26 <script type="text/javascript">27 $(function(){28 $('#demo').click(function(){29 $.blockUI({30 message: $('#displayBox'),31 css: {32 width: '500px',33 height: '100px',34 backgroundColor: '#eee',35 border: '1px solid red',36 color: 'green',37 textAlign: 'center',38 cursor: 'default'39 }40 });41 });42 })43 </script>参数说明：
message = 需要弹出的内容
css = 弹出内容的样式，其中属性需要写成js的形式，如 background-color => backgroundColor
$.unblockUI() = 关闭函数
PS:
想要使用blockUI插件，就需要引入jquery库和blockUI.js。下面附上blockUI.js
/*! * jQuery blockUI plugin * Version 2.42 (11-MAY-2012) * @requires jQuery v1.2.3 or later * * Examples at: http://malsup.com/jquery/block/ * Copyright (c) 2007-2010 M. Alsup * Dual licensed under the MIT and GPL licenses: * http://www.opensource.org/licenses/mit-license.php * http://www.gnu.org/licenses/gpl.html * * Thanks to Amir-Hossein Sobhi for some excellent contributions! */;(function() { function setup($) { if (/1\.(0|1|2)\.(0|1|2)/.test($.fn.jquery) || /^1.1/.test($.fn.jquery)) { alert('blockUI requires jQuery v1.2.3 or later! You are using v' + $.fn.jquery); return; } $.fn._fadeIn = $.fn.fadeIn; var noOp = function() {}; // this bit is to ensure we don't call setExpression when we shouldn't (with extra muscle to handle // retarded userAgent strings on Vista) var mode = document.documentMode || 0; var setExpr = $.browser.msie && (($.browser.version < 8 && !mode) || mode < 8); var ie6 = $.browser.msie && /MSIE 6.0/.test(navigator.userAgent) && !mode; // global $ methods for blocking/unblocking the entire page $.blockUI = function(opts) { install(window, opts); }; $.unblockUI = function(opts) { remove(window, opts); }; // convenience method for quick growl-like notifications (http://www.google.com/search?q=growl) $.growlUI = function(title, message, timeout, onClose) { var $m = $('<div ></div>'); if (title) $m.append('<h1>'+title+'</h1>'); if (message) $m.append('<h2>'+message+'</h2>'); if (timeout == undefined) timeout = 3000; $.blockUI({ message: $m, fadeIn: 700, fadeOut: 1000, centerY: false, timeout: timeout, showOverlay: false, onUnblock: onClose, css: $.blockUI.defaults.growlCSS }); }; // plugin method for blocking element content $.fn.block = function(opts) { var fullOpts = $.extend({}, $.blockUI.defaults, opts || {}); this.each(function() { var $el = $(this); if (fullOpts.ignoreIfBlocked && $el.data('blockUI.isBlocked')) return; $el.unblock({ fadeOut: 0 }); }); return this.each(function() { if ($.css(this,'position') == 'static') this.style.position = 'relative'; if ($.browser.msie) this.style.zoom = 1; // force 'hasLayout' install(this, opts); }); }; // plugin method for unblocking element content $.fn.unblock = function(opts) { return this.each(function() { remove(this, opts); }); }; $.blockUI.version = 2.42; // 2nd generation blocking at no extra cost! // override these in your code to change the default behavior and style $.blockUI.defaults = { // message displayed when blocking (use null for no message) 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 = {}; 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 overlayCSS: { backgroundColor: '#000', opacity: 0.6, cursor: 'wait' }, // styles applied when using $.growlUI 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) iframeSrc: /^https/i.test(window.location.href || '') ? 'javascript:false' : 'about:blank', // force usage of iframe in non-IE browsers (handy for blocking applets) forceIframe: false, // z-index for the blocking overlay baseZ: 1000, // set these to true to have the message automatically centered 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 allowBodyStretch: true, // enable if you want key and mouse events to be disabled for content that is blocked bindEvents: true, // be default blockUI will supress tab navigation from leaving blocking content // (if bindEvents is true) 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 showOverlay: true, // if true, focus will be placed in the first available input field when // page blocking focusInput: true, // suppresses the use of overlay styles on FF/Linux (due to performance issues with opacity) 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) onUnblock: 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 }; // private data and functions follow... var pageBlock = null; var pageBlockEls = []; function install(el, opts) { var css, themedCSS; var full = (el == window); var msg = (opts && opts.message !== undefined ? opts.message : undefined); opts = $.extend({}, $.blockUI.defaults, opts || {}); if (opts.ignoreIfBlocked && $(el).data('blockUI.isBlocked')) return; opts.overlayCSS = $.extend({}, $.blockUI.defaults.overlayCSS, opts.overlayCSS || {}); css = $.extend({}, $.blockUI.defaults.css, opts.css || {}); themedCSS = $.extend({}, $.blockUI.defaults.themedCSS, opts.themedCSS || {}); msg = msg === undefined ? opts.message : msg; // remove the current block (if there is one) if (full && pageBlock) remove(window, {fadeOut:0}); // if an existing element is being used as the blocking content then we capture // its current place in the DOM (and current display style) so we can restore // it when we unblock if (msg && typeof msg != 'string' && (msg.parentNode || msg.jquery)) { var node = msg.jquery ? msg[0] : msg; var data = {}; $(el).data('blockUI.history', data); data.el = node; data.parent = node.parentNode; data.display = node.style.display; data.position = node.style.position; if (data.parent) data.parent.removeChild(node); } $(el).data('blockUI.onUnblock', opts.onUnblock); var z = opts.baseZ; // blockUI uses 3 layers for blocking, for simplicity they are all used on every platform; // layer1 is the iframe layer which is used to supress bleed through of underlying content // layer2 is the overlay layer which has opacity and a wait cursor (by default) // layer3 is the message content that is displayed while blocking var lyr1 = ($.browser.msie || opts.forceIframe) ? $('<iframe src="'+opts.iframeSrc+'"></iframe>') : $('<div ></div>'); var lyr2 = opts.theme ? $('<div ></div>') : $('<div ></div>'); var lyr3, s; if (opts.theme && full) { s = '<div >' + '<div >'+(opts.title || ' ')+'</div>' + '<div ></div>' + '</div>'; } else if (opts.theme) { s = '<div >' + '<div >'+(opts.title || ' ')+'</div>' + '<div ></div>' + '</div>'; } else if (full) { s = '<div ></div>'; } else { s = '<div ></div>'; } lyr3 = $(s); // if we have a message, style it if (msg) { if (opts.theme) { lyr3.css(themedCSS); lyr3.addClass('ui-widget-content'); } else lyr3.css(css); } // style the overlay if (!opts.theme && (!opts.applyPlatformOpacityRules || !($.browser.mozilla && /Linux/.test(navigator.platform)))) lyr2.css(opts.overlayCSS); lyr2.css('position', full ? 'fixed' : 'absolute'); // make iframe layer transparent in IE if ($.browser.msie || opts.forceIframe) lyr1.css('opacity',0.0); //$([lyr1[0],lyr2[0],lyr3[0]]).appendTo(full ? 'body' : el); var layers = [lyr1,lyr2,lyr3], $par = full ? $('body') : $(el); $.each(layers, function() { this.appendTo($par); }); if (opts.theme && opts.draggable && $.fn.draggable) { lyr3.draggable({ handle: '.ui-dialog-titlebar', cancel: 'li' }); } // ie7 must use absolute positioning in quirks mode and to account for activex issues (when scrolling) var expr = setExpr && (!$.boxModel || $('object,embed', full ? null : el).length > 0); if (ie6 || expr) { // give body 100% height if (full && opts.allowBodyStretch && $.boxModel) $('html,body').css('height','100%'); // fix ie6 issue when blocked element has a border width if ((ie6 || !$.boxModel) && !full) { var t = sz(el,'borderTopWidth'), l = sz(el,'borderLeftWidth'); var fixT = t ? '(0 - '+t+')' : 0; var fixL = l ? '(0 - '+l+')' : 0; } // simulate fixed position $.each([lyr1,lyr2,lyr3], function(i,o) { var s = o[0].style; s.position = 'absolute'; if (i < 2) { full ? s.setExpression('height','Math.max(document.body.scrollHeight, document.body.offsetHeight) - (jQuery.boxModel?0:'+opts.quirksmodeOffsetHack+') + "px"') : s.setExpression('height','this.parentNode.offsetHeight + "px"'); full ? s.setExpression('width','jQuery.boxModel && document.documentElement.clientWidth || document.body.clientWidth + "px"') : s.setExpression('width','this.parentNode.offsetWidth + "px"'); if (fixL) s.setExpression('left', fixL); if (fixT) s.setExpression('top', fixT); } else if (opts.centerY) { if (full) s.setExpression('top','(document.documentElement.clientHeight || document.body.clientHeight) / 2 - (this.offsetHeight / 2) + (blah = document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop) + "px"'); s.marginTop = 0; } else if (!opts.centerY && full) { var top = (opts.css && opts.css.top) ? parseInt(opts.css.top) : 0; var expression = '((document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop) + '+top+') + "px"'; s.setExpression('top',expression); } }); } // show the message if (msg) { if (opts.theme) lyr3.find('.ui-widget-content').append(msg); else lyr3.append(msg); if (msg.jquery || msg.nodeType) $(msg).show(); } if (($.browser.msie || opts.forceIframe) && opts.showOverlay) lyr1.show(); // opacity is zero if (opts.fadeIn) { var cb = opts.onBlock ? opts.onBlock : noOp; var cb1 = (opts.showOverlay && !msg) ? cb : noOp; var cb2 = msg ? cb : noOp; if (opts.showOverlay) lyr2._fadeIn(opts.fadeIn, cb1); if (msg) lyr3._fadeIn(opts.fadeIn, cb2); } else { if (opts.showOverlay) lyr2.show(); if (msg) lyr3.show(); if (opts.onBlock) opts.onBlock(); } // bind key and mouse events bind(1, el, opts); if (full) { pageBlock = lyr3[0]; pageBlockEls = $(':input:enabled:visible',pageBlock); if (opts.focusInput) setTimeout(focus, 20); } else center(lyr3[0], opts.centerX, opts.centerY); if (opts.timeout) { // auto-unblock var to = setTimeout(function() { full ? $.unblockUI(opts) : $(el).unblock(opts); }, opts.timeout); $(el).data('blockUI.timeout', to); } }; // remove the block function remove(el, opts) { var full = (el == window); var $el = $(el); var data = $el.data('blockUI.history'); var to = $el.data('blockUI.timeout'); if (to) { clearTimeout(to); $el.removeData('blockUI.timeout'); } opts = $.extend({}, $.blockUI.defaults, opts || {}); bind(0, el, opts); // unbind events if (opts.onUnblock === null) { opts.onUnblock = $el.data('blockUI.onUnblock'); $el.removeData('blockUI.onUnblock'); } var els; if (full) // crazy selector to handle odd field errors in ie6/7 els = $('body').children().filter('.blockUI').add('body > .blockUI'); else els = $('.blockUI', el); if (full) pageBlock = pageBlockEls = null; if (opts.fadeOut) { els.fadeOut(opts.fadeOut); setTimeout(function() { reset(els,data,opts,el); }, opts.fadeOut); } else reset(els, data, opts, el); }; // move blocking element back into the DOM where it started function reset(els,data,opts,el) { els.each(function(i,o) { // remove via DOM calls so we don't lose event handlers if (this.parentNode) this.parentNode.removeChild(this); }); if (data && data.el) { data.el.style.display = data.display; data.el.style.position = data.position; if (data.parent) data.parent.appendChild(data.el); $(el).removeData('blockUI.history'); } if (typeof opts.onUnblock == 'function') opts.onUnblock(el,opts); }; // bind/unbind the handler function bind(b, el, opts) { var full = el == window, $el = $(el); // don't bother unbinding if there is nothing to unbind if (!b && (full && !pageBlock || !full && !$el.data('blockUI.isBlocked'))) return; $el.data('blockUI.isBlocked', b); // don't bind events when overlay is not in use or if bindEvents is false if (!opts.bindEvents || (b && !opts.showOverlay)) return; // bind anchors and inputs for mouse and key events var events = 'mousedown mouseup keydown keypress'; b ? $(document).bind(events, opts, handler) : $(document).unbind(events, handler); // former impl... // var $e = $('a,:input'); // b ? $e.bind(events, opts, handler) : $e.unbind(events, handler); }; // event handler to suppress keyboard/mouse events when blocking function handler(e) { // allow tab navigation (conditionally) if (e.keyCode && e.keyCode == 9) { if (pageBlock && e.data.constrainTabKey) { var els = pageBlockEls; var fwd = !e.shiftKey && e.target === els[els.length-1]; var back = e.shiftKey && e.target === els[0]; if (fwd || back) { setTimeout(function(){focus(back)},10); return false; } } } var opts = e.data; // allow events within the message content if ($(e.target).parents('div.' + opts.blockMsgClass).length > 0) return true; // allow events for content that is not being blocked return $(e.target).parents().children().filter('div.blockUI').length == 0; }; function focus(back) { if (!pageBlockEls) return; var e = pageBlockEls[back===true ? pageBlockEls.length-1 : 0]; if (e) e.focus(); }; function center(el, x, y) { var p = el.parentNode, s = el.style; var l = ((p.offsetWidth - el.offsetWidth)/2) - sz(p,'borderLeftWidth'); var t = ((p.offsetHeight - el.offsetHeight)/2) - sz(p,'borderTopWidth'); if (x) s.left = l > 0 ? (l+'px') : '0'; if (y) s.top = t > 0 ? (t+'px') : '0'; }; function sz(el, p) { return parseInt($.css(el,p))||0; }; }; if (typeof define === 'function' && define.amd && define.amd.jQuery) { define(['jquery'], setup); } else { setup(jQuery); }})();最后附上官网地址：http://www.malsup.com/jquery/block/
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