06 01 action JavaScript action jquery jquery AJAX CSS jquery CSS jquery HTML CSS jquery.css() getter setter.css('backgroundcolor') jquery CSS b

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2 06 01 action JavaScript action jquery jquery AJAX CSS jquery CSS jquery HTML CSS jquery.css() getter setter.css('backgroundcolor') jquery CSS background-color camel-cased DOM backgroundcolor.css() map.css('property','value').css({property1: 'value1', 'property-2': 'value2'}) JavaScript jquery JavaScript object literal 72

3 06 jquery Note DOM.css().addClass() HTML <div id="switcher"> <div class="label">style Switcher</div> <div class="button" id="switcher-default">default</div> <div class="button" id="switcher-large">bigger</div> <div class="button" id="switcher-small">smaller</div> </div> <div class="speech"> <p>fourscore and seven years ago our fathers brought forth on this continent a new nation, conceived in liberty, and dedicated to the proposition that all men are created equal.</p> </div> CSS 4-1 div Bigger Smaller <div class= "speech"> Default <div class= "speech"> 73

4 addClass() 40% $(document).ready() $('#switcher-large').click() $('#switcher-large').click(function() {.css() $('div.speech').css('fontsize') px jquery jquery var $speech = $('div.speech'); $('#switcher-large').click(function() { var num = parsefloat($speech.css('fontsize'), 10);.click() speech div $(document).ready() <div class="speech"> $speech $ $ JavaScript jquery.click() parsefloat() parsefloat()

5 06 jquery parsefloat() NaN parsefloat num 1.4 num px var $speech = $('div.speech'); $('#switcher-large').click(function() { var num = parsefloat($speech.css('fontsize'), 10); num *= 1.4; $speech.css('fontsize', num + 'px'); Note num *= 1.4 num = num * 1.4 num += 1.4 num -= 1.4 num /= 1.4 num %= 1.4 Bigger CSS 4-2 Bigger 75

6 Smaller num /= 1.4 <div id="switcher"> <button>.click() ID var $speech = $('div.speech'); $('#switcher button').click(function() { var num = parsefloat($speech.css('fontsize'), 10); if (this.id == 'switcher-large') { num *= 1.4; } else if (this.id == 'switcher-small') { num /= 1.4; } $speech.css('fontsize', num + 'px'); 3 this DOM id if else if this jquery DOM Default else if switch var $speech = $('div.speech'); var defaultsize = $speech.css('fontsize'); $('#switcher button').click(function() { var num = parsefloat($speech.css('fontsize'), 10); switch (this.id) { case 'switcher-large': num *= 1.4; break; 76

7 06 jquery case 'switcher-small': num /= 1.4; break; default: num = parsefloat(defaultsize, 10); } $speech.css('fontsize', num + 'px'); this.id 'switcher-large' 'switcher-small' hide().show().css('display', 'string') string.hide() style display:none display none display block inline.show() display display: none Note display Mozilla Developer Center

8 show().hide() display <li> display:block display:inline <li>.show() display:block <li>.show() display:inline HTML <div id="switcher"> <div class="label">text Size</div> <button id="switcher-default">default</button> <button id="switcher-large">bigger</button> <button id="switcher-small">smaller</button> </div> <div class="speech"> <p>fourscore and seven years ago our fathers brought forth on this continent a new nation, conceived in liberty, and dedicated to the proposition that all men are created equal. </p> <p>now we are engaged in a great civil war, testing whether that nation, or any nation so conceived and so dedicated, can long endure. We are met on a great battlefield of that war. We have come to dedicate a portion of that field as a final resting-place for those who here gave their lives that the nation might live. It is altogether fitting and proper that we should do this. But, in a larger sense, we cannot dedicate, we cannot consecrate, we cannot hallow, this ground. </p> <a href="#" class="more">read more</a> </div> DOM 78

9 06 jquery $('p:eq(1)').hide(); 4-3 read more $('p:eq(1)').hide(); $('a.more').click(function() { $('p:eq(1)').show(); $(this).hide(); return false; { $(document).ready(function() 4-4 read more.hide().show() 79

北京奧運會上倒舉中共國旗的小男孩

北京奧運會上倒舉中共國旗的小男孩北京奧運會上倒舉中共國旗的小男孩黃花崗雜誌 2008 年第 3 期總第 26 期 ( 增刊 ) Huang Hua Gang Magazine OCTOBER 15, 2008 辛亥元勛烈士吳祿貞編者前言百年辛亥專欄孫中山和三民主義從林肯民權主義到孫文三民主義辛灝年