jQuery弹出插件thickbox使用心得

thickbox是一个简单易用的jQuery插件。

其官网：http://jquery.com/demo/thickbox/ 。上面有源码和示例。一般只要在需要添加弹出窗体的元素中加上它的类thickbox，就能弹出来。

可是thickbox是定义在$(document).ready()函数中，每次只要在超链接中加了他的代码，点击就会弹出窗体。

而有时候，我想在弹出前做一个验证，只有验证通过了，才需要弹出窗体。

于是，我把thickbox.js改了一下。去掉$(document).ready()函数，然后再定义一个方法来调用弹出窗体。

/*
* Thickbox 3.1 - One Box To Rule Them All.
* By Cody Lindley (http://www.codylindley.com)
* Copyright (c) 2007 cody lindley
* Licensed under the MIT License: http://www.opensource.org/licenses/mit-license.php
*/var tb_pathToImage = "Images/loadingAnimation.gif";/*!!!!!!!!!!!!!!!!! edit below this line at your own risk !!!!!!!!!!!!!!!!!!!!!!!*///on page load call tb_init
//$(document).ready(function(){
//  tb_init('a.thickbox, area.thickbox, input.thickbox');//pass where to apply thickbox
//  imgLoader = new Image();// preload image
//  imgLoader.src = tb_pathToImage;
//});//add thickbox to href & area elements that have a class of .thickbox
function tb_init(domChunk) {$(domChunk).click(function() {var t = this.title || this.name || null;var a = this.href || this.alt;var g = this.rel || false;tb_show(t, a, g);this.blur();return false;});
}function tb_show(caption, url, imageGroup) {//function called when the user clicks on a thickbox linktry {if (typeof document.body.style.maxHeight === "undefined") {//if IE 6$("body", "html").css({ height: "100%", width: "100%" });$("html").css("overflow", "hidden");if (document.getElementById("TB_HideSelect") === null) {//iframe to hide select elements in ie6$("body").append("<iframe id='TB_HideSelect'></iframe><div id='TB_overlay'></div><div id='TB_window'></div>");$("#TB_overlay").click(tb_remove);}} else {//all othersif (document.getElementById("TB_overlay") === null) {$("body").append("<div id='TB_overlay'></div><div id='TB_window'></div>");$("#TB_overlay").click(tb_remove);}}if (tb_detectMacXFF()) {$("#TB_overlay").addClass("TB_overlayMacFFBGHack"); //use png overlay so hide flash} else {$("#TB_overlay").addClass("TB_overlayBG"); //use background and opacity}if (caption === null) { caption = ""; }$("body").append("<div id='TB_load'><img src='" + imgLoader.src + "' /></div>"); //add loader to the page$('#TB_load').show(); //show loadervar baseURL;if (url.indexOf("?") !== -1) { //ff there is a query string involvedbaseURL = url.substr(0, url.indexOf("?"));} else {baseURL = url;}var urlString = /\.jpg$|\.jpeg$|\.png$|\.gif$|\.bmp$/;var urlType = baseURL.toLowerCase().match(urlString);if (urlType == '.jpg' || urlType == '.jpeg' || urlType == '.png' || urlType == '.gif' || urlType == '.bmp') {//code to show imagesTB_PrevCaption = "";TB_PrevURL = "";TB_PrevHTML = "";TB_NextCaption = "";TB_NextURL = "";TB_NextHTML = "";TB_imageCount = "";TB_FoundURL = false;if (imageGroup) {TB_TempArray = $("a[@rel=" + imageGroup + "]").get();for (TB_Counter = 0; ((TB_Counter < TB_TempArray.length) && (TB_NextHTML === "")); TB_Counter++) {var urlTypeTemp = TB_TempArray[TB_Counter].href.toLowerCase().match(urlString);if (!(TB_TempArray[TB_Counter].href == url)) {if (TB_FoundURL) {TB_NextCaption = TB_TempArray[TB_Counter].title;TB_NextURL = TB_TempArray[TB_Counter].href;TB_NextHTML = "<span id='TB_next'>  <a href='#'>Next ></a></span>";} else {TB_PrevCaption = TB_TempArray[TB_Counter].title;TB_PrevURL = TB_TempArray[TB_Counter].href;TB_PrevHTML = "<span id='TB_prev'>  <a href='#'>< Prev</a></span>";}} else {TB_FoundURL = true;TB_imageCount = "Image " + (TB_Counter + 1) + " of " + (TB_TempArray.length);}}}imgPreloader = new Image();imgPreloader.onload = function() {imgPreloader.onload = null;// Resizing large images - orginal by Christian Montoya edited by me.var pagesize = tb_getPageSize();var x = pagesize[0] - 150;var y = pagesize[1] - 150;var imageWidth = imgPreloader.width;var imageHeight = imgPreloader.height;if (imageWidth > x) {imageHeight = imageHeight * (x / imageWidth);imageWidth = x;if (imageHeight > y) {imageWidth = imageWidth * (y / imageHeight);imageHeight = y;}} else if (imageHeight > y) {imageWidth = imageWidth * (y / imageHeight);imageHeight = y;if (imageWidth > x) {imageHeight = imageHeight * (x / imageWidth);imageWidth = x;}}// End ResizingTB_WIDTH = imageWidth + 30;TB_HEIGHT = imageHeight + 60;$("#TB_window").append("<a href='' id='TB_ImageOff' title='Close'><img id='TB_Image' src='" + url + "' width='" + imageWidth + "' height='" + imageHeight + "' alt='" + caption + "'/></a>" + "<div id='TB_caption'>" + caption + "<div id='TB_secondLine'>" + TB_imageCount + TB_PrevHTML + TB_NextHTML + "</div></div><div id='TB_closeWindow'><a href='#' id='TB_closeWindowButton' title='Close'>X</a></div>");$("#TB_closeWindowButton").click(tb_remove);if (!(TB_PrevHTML === "")) {function goPrev() {if ($(document).unbind("click", goPrev)) { $(document).unbind("click", goPrev); }$("#TB_window").remove();$("body").append("<div id='TB_window'></div>");tb_show(TB_PrevCaption, TB_PrevURL, imageGroup);return false;}$("#TB_prev").click(goPrev);}if (!(TB_NextHTML === "")) {function goNext() {$("#TB_window").remove();$("body").append("<div id='TB_window'></div>");tb_show(TB_NextCaption, TB_NextURL, imageGroup);return false;}$("#TB_next").click(goNext);}document.onkeydown = function(e) {if (e == null) { // iekeycode = event.keyCode;} else { // mozillakeycode = e.which;}if (keycode == 27) { // closetb_remove();} else if (keycode == 190) { // display previous imageif (!(TB_NextHTML == "")) {document.onkeydown = "";goNext();}} else if (keycode == 188) { // display next imageif (!(TB_PrevHTML == "")) {document.onkeydown = "";goPrev();}}};tb_position();$("#TB_load").remove();$("#TB_ImageOff").click(tb_remove);$("#TB_window").css({ display: "block" }); //for safari using css instead of show};imgPreloader.src = url;} else {//code to show htmlvar queryString = url.replace(/^[^\?]+\??/, '');var params = tb_parseQuery(queryString);TB_WIDTH = (params['width'] * 1) + 30 || 630; //defaults to 630 if no paramaters were added to URLTB_HEIGHT = (params['height'] * 1) + 40 || 440; //defaults to 440 if no paramaters were added to URLajaxContentW = TB_WIDTH - 30;ajaxContentH = TB_HEIGHT - 45;if (url.indexOf('TB_iframe') != -1) {// either iframe or ajax window        urlNoQuery = url.split('TB_');$("#TB_iframeContent").remove();if (params['modal'] != "true") {//iframe no modal$("#TB_window").append("<div id='TB_title'><div id='TB_ajaxWindowTitle'>" + caption + "</div><div id='TB_closeAjaxWindow'><a href='#' id='TB_closeWindowButton' title='Close'>X</a></div></div><iframe frameborder='0' hspace='0' src='" + urlNoQuery[0] + "' id='TB_iframeContent' name='TB_iframeContent" + Math.round(Math.random() * 1000) + "' οnlοad='tb_showIframe()' style='width:" + (ajaxContentW + 29) + "px;height:" + (ajaxContentH + 17) + "px;' > </iframe>");} else {//iframe modal$("#TB_overlay").unbind();$("#TB_window").append("<iframe frameborder='0' hspace='0' src='" + urlNoQuery[0] + "' id='TB_iframeContent' name='TB_iframeContent" + Math.round(Math.random() * 1000) + "' οnlοad='tb_showIframe()' style='width:" + (ajaxContentW + 29) + "px;height:" + (ajaxContentH + 17) + "px;'> </iframe>");}} else {// not an iframe, ajaxif ($("#TB_window").css("display") != "block") {if (params['modal'] != "true") {//ajax no modal$("#TB_window").append("<div id='TB_title'><div id='TB_ajaxWindowTitle'>" + caption + "</div><div id='TB_closeAjaxWindow'><a href='#' id='TB_closeWindowButton'>X</a></div></div><div id='TB_ajaxContent' style='width:" + ajaxContentW + "px;height:" + ajaxContentH + "px'></div>");} else {//ajax modal$("#TB_overlay").unbind();$("#TB_window").append("<div id='TB_ajaxContent' class='TB_modal' style='width:" + ajaxContentW + "px;height:" + ajaxContentH + "px;'></div>");}} else {//this means the window is already up, we are just loading new content via ajax$("#TB_ajaxContent")[0].style.width = ajaxContentW + "px";$("#TB_ajaxContent")[0].style.height = ajaxContentH + "px";$("#TB_ajaxContent")[0].scrollTop = 0;$("#TB_ajaxWindowTitle").html(caption);}}$("#TB_closeWindowButton").click(tb_remove);if (url.indexOf('TB_inline') != -1) {$("#TB_ajaxContent").append($('#' + params['inlineId']).children());$("#TB_window").unload(function() {$('#' + params['inlineId']).append($("#TB_ajaxContent").children()); // move elements back when you're finished});tb_position();$("#TB_load").remove();$("#TB_window").css({ display: "block" });} else if (url.indexOf('TB_iframe') != -1) {tb_position();if ($.browser.safari) {//safari needs help because it will not fire iframe onload$("#TB_load").remove();$("#TB_window").css({ display: "block" });}} else {$("#TB_ajaxContent").load(url += "&random=" + (new Date().getTime()), function() {//to do a post change this load methodtb_position();$("#TB_load").remove();tb_init("#TB_ajaxContent a.thickbox");$("#TB_window").css({ display: "block" });});}}if (!params['modal']) {document.onkeyup = function(e) {if (e == null) { // iekeycode = event.keyCode;} else { // mozillakeycode = e.which;}if (keycode == 27) { // closetb_remove();}};}} catch (e) {//nothing here}
}//helper functions below
function tb_showIframe() {$("#TB_load").remove();$("#TB_window").css({ display: "block" });
}function tb_remove() {$("#TB_imageOff").unbind("click");$("#TB_closeWindowButton").unbind("click");$("#TB_window").fadeOut("fast", function() { $('#TB_window,#TB_overlay,#TB_HideSelect').trigger("unload").unbind().remove(); });$("#TB_load").remove();if (typeof document.body.style.maxHeight == "undefined") {//if IE 6$("body", "html").css({ height: "auto", width: "auto" });$("html").css("overflow", "");}document.onkeydown = "";document.onkeyup = "";return false;
}function tb_position() {$("#TB_window").css({ marginLeft: '-' + parseInt((TB_WIDTH / 2), 10) + 'px', width: TB_WIDTH + 'px' });if (!(jQuery.browser.msie && jQuery.browser.version < 7)) { // take away IE6$("#TB_window").css({ marginTop: '-' + parseInt((TB_HEIGHT / 2), 10) + 'px' });}
}function tb_parseQuery(query) {var Params = {};if (!query) { return Params; } // return empty objectvar Pairs = query.split(/[;&]/);for (var i = 0; i < Pairs.length; i++) {var KeyVal = Pairs[i].split('=');if (!KeyVal || KeyVal.length != 2) { continue; }var key = unescape(KeyVal[0]);var val = unescape(KeyVal[1]);val = val.replace(/\+/g, ' ');Params[key] = val;}return Params;
}function tb_getPageSize() {var de = document.documentElement;var w = window.innerWidth || self.innerWidth || (de && de.clientWidth) || document.body.clientWidth;var h = window.innerHeight || self.innerHeight || (de && de.clientHeight) || document.body.clientHeight;arrayPageSize = [w, h];return arrayPageSize;
}function tb_detectMacXFF() {var userAgent = navigator.userAgent.toLowerCase();if (userAgent.indexOf('mac') != -1 && userAgent.indexOf('firefox') != -1) {return true;}
}//标签
function TagOperater(obj) {imgLoader = new Image(); // preload imageimgLoader.src = tb_pathToImage;tb_show(obj.title, obj.href, false);return false;
}

其实我们调用的时候，只需要调用 tb_show(caption, url, imageGroup)就可以了。

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