Posted in Javascript onJuly 18, 2010
需求
根据提供的试卷题目(是一个干净的只有“数据”的HTML网页)生成一份多页的试卷,用户能执行翻页、具有答题时间限制,展示给用户的试卷中题目需要占用尽量少的空间(比如选择题中把两条较短的选项由两行合并到一行)、同一道题目不要跨页面显示以方便答题者,管理员能够改变试卷的样式(字体、颜色、行距、页面边距,像字处理软件一样……),题目之间可以插入一些说明性的文字(比如告知答题者作答的须知等等)。题目提干、选择题的选项、说明文字可以包含多媒体信息(文字、图片、列表、表格、视频等等……)。选择题选项数目不限、单选多选不限。翻页要有可订制的动画效果
提供的试卷样板类似如下(Input):
<ol id="olThePaper"> <div class="Desc">选择题:说明文字。说明文字。说明文字。说明文字。说明文字。说明文字。说明文字。说明文字。说明文字。说明文字。说明文字。说明文字。说明文字。说明文字。</div> <div class="Problem" id="1"> <li>1.你认为怎样的老师是好老师?</li> <div class="Choices"> <label><input type="radio" name="prob1" value="A" />和学生平等相处,能全面满足学生各种需要</label> <label><input type="radio" name="prob1" value="B" />所在教学班的成绩优于其他平行班</label> <label><input type="radio" name="prob1" value="C" />严格管理学生、所带的班级班风良好</label> <label><input type="radio" name="prob1" value="D" />父母般地关心学生的生活和情绪状态</label> </div> </div> <div class="Problem" id="2"> <li>2.一位有15年教龄的英语教师,教了多年高三,可谓学校的核心骨干。一次接受邀请到外校介绍教学经验,台下有老师发表了观点并问到几个英语教法发面的问题,一下子把她给卡住了。这是因为</li> <div class="Choices"> <label><input type="radio" name="prob2" value="A" />她最近工作太累,注意力不够集中。</label> <label><input type="radio" name="prob2" value="B" />提问老师的观点和她的有很大不同。</label> <label><input type="radio" name="prob2" value="C" />由于长时间在教学一线拼搏,她对教学理论问题的关注度不高。</label> <label><input type="radio" name="prob2" value="D" />对学科教学的归纳和思考少,一时加工不过来。</label> </div> </div> <div class="Problem" id="3"> <li>3.哪张图片最好看?</li> <div class="Choices"> <label><input type="radio" name="prob3" value="A" />这一张<img src="img1.png" height="300px" width="400px" alt="img1"/>好看。</label> <label><input type="radio" name="prob3" value="B" />这一张<img src="img2.png" height="300px" width="400px" alt="img2"/>好看。</label> <label><input type="radio" name="prob3" value="C" />这一张<img src="img3.png" height="300px" width="400px" alt="img3"/>好看。</label> <label><input type="radio" name="prob3" value="D" />这一张<img src="img4.png" height="300px" width="400px" alt="img4"/>好看。</label> <label><input type="radio" name="prob3" value="E" />不知道。</label> </div> </div> <div class="Desc">填空题和选择题:一大堆的说明文字。一大堆的说明文字。一大堆的说明文字。一大堆的说明文字。一大堆的说明文字。</div> <div class="Problem" id="4"> <li>4.床前明月光,<input type="text" name="prob4" /></li> </div> <div class="Problem" id="5"> <li>5.你认为怎样的老师是好老师?</li> <div class="Choices"> <label><input type="checkbox" name="prob6" value="D" />和</label> <label><input type="checkbox" name="prob6" value="A" />所</label> <label><input type="checkbox" name="prob6" value="B" />严</label> <label><input type="checkbox" name="prob6" value="C" />父</label> <label><input type="checkbox" name="prob6" value="E" />和班的成绩班的成绩班的成绩班的成绩班的成绩</label> <label><input type="checkbox" name="prob6" value="F" />所班的成绩班的成绩班的成绩</label> <label><input type="checkbox" name="prob6" value="G" />严班的班的成绩班的成绩班的成绩班的成绩</label> <label><input type="checkbox" name="prob6" value="H" />啊</label> </div> </div> </ol>
思路
面对这种需求该怎么办呢?使用JavaScript了,看来。后来决定用jQuery,Aptana作IDE(虽然jQuery支持库在Windows上死活装不上去,换了个OS就好了,奇怪),格式么就用CSS了。
具体步骤:
导入试卷题目HTML
对所有选择题进行排版,把一行划分为四个位置,使选项尽量适应一个位置、两个位置或四个位置(也就是一行四项、一行两项或者一行一项的效果)
对所有题目进行分页
思路还是清晰的,但是由于浏览器众多,还是比较麻烦的,并且我是新手,没接触过jQuery之前……
实现
页面文件(和例子不同,但是格式一样的)
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>No title...</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <script language="JavaScript" src="lib/jquery/jquery-1.4.2.js" type="text/javascript"></script> <script language="JavaScript" src="lib/countdown/jquery.countdown.pack.js" type="text/javascript"></script> <script language="JavaScript" src="TestPaperProcessor.js" type="text/javascript"></script> <link href="style.css" rel="stylesheet" type="text/css" /> </head> <body> <div id="divToolbar"> <div id="divPrev">PrevPage</div> <div id="divNext">NextPage</div> <div id="divPageInfo">Loading the test...</div> <div id="divTimer"></div> </div> <form id="formPaper" action="demo.html" method="post" accept-charset="utf-8"> <ul> <div class="Display" id="divLeft"> left<!--the left page--> </div> <div class="Display" id="divRight"> right<!--the right page--> </div> </ul> <ol id="olThePaper"> <div class="Desc">选择题:说明文字。说明文字。说明文字。说明文字。说明文字。说明文字。说明文字。说明文字。说明文字。说明文字。说明文字。说明文字。说明文字。说明文字。</div> <div class="Problem" id="1"> <li>1你认为怎样的老师是好老师?</li> <div class="Choices"> <label> <input type="radio" name="prob1" value="D" />和学生平等相处,能全面满足学生各种需要 </label> <label> <input type="radio" name="prob1" value="A" />所在教学班的成绩优于其他平行班 </label> <label> <input type="radio" name="prob1" value="B" />严格管理学生/所带的班级班风良好 </label> <label> <input type="radio" name="prob1" value="C" />父母般地关心学生的生活和情绪状态 </label> </div> </div> <div class="Problem" id="2"> <li>2你认为怎样的老师是好老师?</li> <div class="Choices"> <label> <input type="radio" name="prob2" value="D" />和学生平jlsdjklsdf生各种需要 </label> <label> <input type="radio" name="prob2" value="A" />所 </label> <label> <input type="radio" name="prob2" value="B" />严格好 </label> <label> <input type="radio" name="prob2" value="C" />父母关心学生的生活和情绪状态 </label> </div> </div> <div class="Problem" id="3"> <li>3你认为怎样的老师是好老师?</li> <div class="Choices"> <label> <input type="radio" name="prob3" value="D" />和学生平等相处,能全面满足学生各种需要 </label> <label> <input type="radio" name="prob3" value="A" />所在教学班的成绩优于其他平行班 </label> <label> <input type="radio" name="prob3" value="B" />严格管理学生/所带的班级班风良好 </label> <label> <input type="radio" name="prob3" value="C" />父母般地关心学生的生活和情绪状态 </label> </div> </div> <div class="Problem" id="4"> <li>4你认为怎样的老师是好老师?</li> <div class="Choices"> <label> <input type="radio" name="prob4" value="D" />和学生平等相处,能全面满足学和学生平等相处,能全面满足学和学生平等相处,能全面满足学和学生平等相处,能全面满足学和学生平等相处,能全面满足学和学生平等相处,能全面满足学和学生平等相处,能全面满足学和学生平等相处,能全面满足学和学生平等相处,能全面满足学生各种需要 </label> <label> <input type="radio" name="prob4" value="A" />所在教学班的成绩优于其他平行班 </label> <label> <input type="radio" name="prob4" value="B" />严格管理学生/所带的班级班风良好 </label> <label> <input type="radio" name="prob4" value="C" />父母般地关心学生的生活和情绪状态 </label> </div> </div> <div class="Desc">还是选择题:一大堆的说明文字。一大堆的说明文字。一大堆的说明文字。一大堆的说明文字。一大堆的说明文字。</div> <div class="Problem" id="10"> <li>5你认为怎样的老师是好老师?</li> <div class="Choices"> <label> <input type="radio" name="prob5" value="D" />和10学生平等相处,能全面满足学生各种需要 </label> <label> <input type="radio" name="prob5" value="A" />所10在教学班的成绩优于其他平行班 </label> <label> <input type="radio" name="prob5" value="B" />严10jhjhjhjhkljlkjjkljjkjjkllkjlkjljkjljlkj格管文字 </label> <label> <input type="radio" name="prob5" value="C" />父10母般地关心学生的生活和情绪状态 </label> </div> </div> <div class="Problem" id="5"> <li>5你认为怎样的老师是好老师?</li> <div class="Choices"> <label> <input type="radio" name="prob5" value="D" />和学生平等相处,能全面满足学生各种需要 </label> <label> <input type="radio" name="prob5" value="A" />所在教学班的成绩优于其他平行班 </label> <label> <input type="radio" name="prob5" value="B" />严jhjhjhjhkljlkjjkljjkjjkllkjlkjljkjljlkj格管<img src="aaaa9.jpg" height="300px" width="400px" alt="pic"/>文字 </label> <label> <input type="radio" name="prob5" value="C" />父母般地关心学生的生活和情绪状态 </label> </div> </div> <div class="Problem" id="6"> <li>6你认为怎样的老师是好老师?</li> <div class="Choices"> <label> <input type="radio" name="prob6" value="D" />和 </label> <label> <input type="radio" name="prob6" value="A" />所 </label> <label> <input type="radio" name="prob6" value="B" />严 </label> <label> <input type="radio" name="prob6" value="C" />父 </label> <label> <input type="radio" name="prob6" value="E" />和班的成绩班的成绩班的成绩班的成绩班的成绩 </label> <label> <input type="radio" name="prob6" value="F" />所班的成绩班的成绩班的成绩 </label> <label> <input type="radio" name="prob6" value="G" />严班的班的成绩班的成绩班的成绩班的成绩 </label> <label> <input type="radio" name="prob6" value="H" />父 </label> </div> </div> </ol> </form> </body> </html>
样式文件(CSS)
/* YahooUI CSS Reset */ body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,form,fieldset,input,textarea,p,blockquote,th,td { padding: 0; margin: 0; } table { border-collapse: collapse; border-spacing: 0; } fieldset,img { border: 0; } address,caption,cite,code,dfn,em,strong,th,var { font-weight: normal; font-style: normal; } ol,ul { list-style: none; } caption,th { text-align: left; } h1,h2,h3,h4,h5,h6 { font-weight: normal; font-size: 100%; } q:before,q:after { content:''; } abbr,acronym { border: 0;} label { padding: 0; margin: 0; } /* My css */ .Choices { line-height: 150%; margin: 5px 0; } .Page { height: 500px; border: solid 1px gray; } #olThePaper, .Display { padding: 0; width: 500px; } /* NOTICE: the width of .Display and #olThePaper should be the SAME. */ .Display { float: left; } #divToolbar { height: 35px; } #divPrev, #divNext { float: left; width: 100px; height: 30px; border: solid 1px green; background-color: #999999; } #divPageInfo { float: left; width: 100px; height: 30px; } #divTimer { float: left; width: 500px; height: 30px; } /*for debugging... perhaps for non-IE only*/ /**label { outline: dotted 1px red; background-color: gray; }**/ /**div {outline: dashed 1px blue;}**/
下面是重点,TTestPaperProcessor.js:
/** * * @param {String} PaperOlId the id value of the ol tags indicating pages. * @param {String} ProblemClass the css class name for problem area. * @param {String} DescClass the css class name for description area. * @param {String} ChoicesClass the css class name for choices area. * @param {String} LeftPageId the id of the left page. * @param {String} RightPageId the id of the right page. * @author ExSystem<exsystemchina@gmail.com> */ function TTestPaperProcessor(PaperOlId, ProblemClass, DescClass, ChoicesClass, LeftPageId, RightPageId) { this.FPaperOlId = PaperOlId; this.FProblemClass = ProblemClass; this.FDescClass = DescClass; this.FChoicesClass = ChoicesClass; this.FLeftPageId = LeftPageId; this.FRightPageId =RightPageId; $('#' + this.FLeftPageId).html(''); $('#' + this.FRightPageId).html(''); this._FormatProblemOptions(); this._DivideIntoPages(); this.setCurrPage(1); } TTestPaperProcessor.prototype = { FPaperOlId: '', //the id property of the ol tag contains the whole test paper. FProblemClass: '', //the css class name for problem area. FDescClass: '', //the css class name for description area. FChoicesClass: '', //the css class name for choices area. FLeftPageId: '', //the left page. FRightPageId: '', //the right page. CPageClass: 'Page', FIsDisplayTableSupported: null, //whether the browser is the EVIL M$IE6,7 that does not support display: table(-cell). FCurrPage: 0, //start from 1, 0 for no page has been displayed yet. FPageCount: 0, //page count. // /** // * Get external css stylesheet info. // * @param {String} Selector The selector in the css style sheet. // * @param {String} Property The property name. // * @return {String} The value of the property, or null for undefined property. // */ // _GetCssInfo: function(Selector, Property) { // var mCss = document.styleSheets[0].cssRules || document.styleSheets[0].rules; // for (var mIndex = 0; mIndex < mCss.length; ++mIndex) { // if (mCss[mIndex].selectorText.toLowerCase() == Selector) { // return mCss[mIndex].style[Property]; // } // } // return null; // }, /** * @return {Boolean} */ _IsDisplayTableSupported: function() { if (this.FIsDisplayTableSupported != null) { return this.FIsDisplayTableSupported; } this.FIsDisplayTableSupported = !(jQuery.browser.msie && jQuery.browser.version < 8.0); return this.FIsDisplayTableSupported; }, /** * Formats radios and checkboxes for the Choices quiz. */ _FormatProblemOptions: function() { var mThis = this; var mSelector = '.' + this.FProblemClass + ' .' + this.FChoicesClass; $(mSelector).each(function() { //Rearrange the options for each problem ordered by offsetWidth of the label tag. var mLabels = new Array(); mLabels = jQuery.makeArray($('label', this)); mLabels.sort(function(First, Second) { return $(Second).outerWidth(true) > $(First).outerWidth(true); }); $(mLabels).appendTo(this); //Layout the options into the appropreate form. var mSlots = -1; //Force to create a new row, inside the while() loop. var mSlotWidth = $(mSelector).width() / 4.0; var mCellSize = 0; if (mThis._IsDisplayTableSupported()) { while (mLabels.length > 0) { //alert($(mLabels[0]).outerWidth(true) + '::' + $(mLabels[0]).outerHeight(true) + '::' + $(mLabels[0]).html()); if (mSlots <= 0) { //If no empty slot, create a new row. mCurrRow = $('<div class="___table" style="display: table;"></div>'); mCurrRow.appendTo(this); mSlots = 4; mCellSize = 0; var mRealCellWidth = $(mLabels[0]).outerWidth(true); if (mRealCellWidth < mSlotWidth) { mCellSize = 1; } if (mRealCellWidth >= mSlotWidth && mRealCellWidth < mSlotWidth * 2) { mCellSize = 2; } if (mRealCellWidth >= mSlotWidth * 2) { mCellSize = 4; } } mSlots -= mCellSize; if (mSlots >= 0) { //If empty slots exists, put the cell into the row. mLabel = mLabels.shift(); $(mLabel).addClass('___cell'); $(mLabel).css('display', 'table-cell'); $(mLabel).appendTo(mCurrRow); } } $('.___table').each(function() { //Align all the tables and cells. $(this).css('width', '100%'); var mCellWidth = 100 / $('.___cell', this).length; $('.___cell', this).css('width', mCellWidth + '%'); }); } else { // for the evil M$IE6, use table, tr, td tags. while (mLabels.length > 0) { if (mSlots <= 0) { //If no empty slot, create a new row. mCurrRow = $('<table class="___table" cellspacing="0" cellpadding="0"></table>'); mRow = $('<tr></tr>'); mRow.appendTo(mCurrRow); mCurrRow.appendTo(this); mSlots = 4; mCellSize = 0; var mRealCellWidth = $(mLabels[0]).attr('offsetWidth'); //The EVIL IE only: //be sure to use this css reset: table { border-collapse: collapse; border-spacing: 0; } //otherwise, 2 lines will be occupied by some long problem options instead of 1. //or use this code instead: var mRealCellWidth = $(mLabels[0]).attr('offsetWidth') * 1.3; if (mRealCellWidth <= mSlotWidth) { mCellSize = 1; } if (mRealCellWidth > mSlotWidth && mRealCellWidth <= mSlotWidth * 2) { mCellSize = 2; } if (mRealCellWidth > mSlotWidth * 2) { mCellSize = 4; } } mSlots -= mCellSize; if (mSlots >= 0) { //If empty slots exists, put the cell into the row. mLabel = mLabels.shift(); mCell = $('<td class="___cell"></td>'); $(mLabel).appendTo(mCell); mCell.appendTo($('tr', mCurrRow)[0]); } } $('.___table').each(function() { //Align all the tables and cells. $(this).css('width', '100%'); var mCellWidth = 100 / $('tbody tr .___cell', this).length; $('tbody tr .___cell', this).css('width', mCellWidth + '%'); }); } }); }, /** * Create a new page, and add it to the paper. * @return {jQuery} the new page. */ _CreateNewPage: function() { ++this.FPageCount; mPage = $('<div class="' + this.CPageClass + '" id="___page_' + this.FPageCount + '"></div>'); mPage.appendTo($('#' + this.FPaperOlId)); return mPage; }, /** * * @param {Number} PageNumber * @return {jQuery} */ _GetPage: function(PageNumber) { if (PageNumber < 1 || PageNumber > this.FPageCount) { throw new Error('invalid page number: ' + PageNumber + '.'); } return $('#___page_' + PageNumber); }, /** * */ _DivideIntoPages: function() { var mProblems = $('.' + this.FProblemClass + ', .' + this.FDescClass); var mProblemsCount = mProblems.length; var mCurrPage = this._CreateNewPage(); //var mPageHeight = mCurrPage.attr('offsetHeight'); chrome: sometimes 0. safari: always 0, IF PUTTED IN $(window).ready(). var mPageHeight = mCurrPage.outerHeight(true); //the same as the code above. FIX: PUT IT INTO $(window).load(). var mUsedPageHeight = 0; for (var mCurrProblem = 0; mCurrProblem < mProblemsCount; ++mCurrProblem) { if (mUsedPageHeight + $(mProblems[mCurrProblem]).outerHeight(true) > mPageHeight) { mCurrPage.hide(); mCurrPage = this._CreateNewPage(); mPageHeight = mCurrPage.outerHeight(true); mUsedPageHeight = 0; } $(mProblems[mCurrProblem]).appendTo(mCurrPage); mUsedPageHeight += $(mProblems[mCurrProblem]).outerHeight(true); } mCurrPage.hide(); }, /** * Get the current page of the left side, started from 1. * @return {Number} The current page. */ getCurrPage: function() { if (this.FPageCount == 0) { throw new Error('No page has been created yet.'); } return this.FCurrPage; }, /** * Trun to a specific page in the left side. * @param {Number} Value The page number. */ setCurrPage: function(Value) { if (Value < 1 || Value > this.FPageCount) { throw new Error('No such page: ' + Value + '.'); } this.FCurrPage = parseInt(Value / 2) * 2 + 1; // to get an odd number. $('#' + this.FLeftPageId + ' .' + this.CPageClass).hide(); $('#' + this.FRightPageId + ' .' + this.CPageClass).hide(); if (this.FCurrPage >= 0) { $('#___page_' + this.FCurrPage).appendTo($('#' + this.FLeftPageId)); $('#___page_' + this.FCurrPage).show('fast'); if (this.FCurrPage < this.FPageCount) { ++this.FCurrPage; $('#___page_' + this.FCurrPage).appendTo($('#' + this.FRightPageId)); $('#___page_' + this.FCurrPage).show('fast'); --this.FCurrPage; } } }, /** * @retrun {Number} */ getPageCount: function() { return this.FPageCount; }, /** * */ Prev: function() { this.setCurrPage(this.FCurrPage - 2); }, /** * */ Next: function() { this.setCurrPage(this.FCurrPage + 2); } }; //client code goes here... $(window).load(function() { var obj = new TTestPaperProcessor('olThePaper', 'Problem', 'Desc', 'Choices', 'divLeft', 'divRight'); $('#divPrev').click(function() { try { obj.Prev(); $('#divPageInfo').text(obj.getCurrPage() + ' of ' + obj.getPageCount()); } catch (e) { alert('No such page!'); } }); $('#divNext').click(function() { try { obj.Next(); $('#divPageInfo').text(obj.getCurrPage() + ' of ' + obj.getPageCount()); } catch (e) { alert('No such page!'); } }); //USAGE: http://keith-wood.name/countdown.html function TimeUp() { $('#formPaper').submit(); } $('#divTimer').countdown({ until: '+90m', compact: true, format: 'HMS', description: '', onExpiry: TimeUp }); $('#divPageInfo').text(obj.getCurrPage() + ' of ' + obj.getPageCount()); });
嘿嘿,其实这是一个俺们学校一位博导老师的项目的一部分~~托给我做了。马上要出门了,回来放源文件下载,就可以看到效果了~~昨天回来太晚了,现在放出源代码文件下载:点击此处
/201007/yuanma/TestPaperProcessor.rar
基于jQuery试卷自动排版系统
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