jQuery/CSS3实现图片层叠展开特效

HTML代码：

把要用到的小图片列出来，HTML结构非常简单。

1. <div id="page_wrap">
2. <!--Stack 1  -->
3. <div class="image_stack" style="margin-left:600px">
4. <img id="photo1" class="stackphotos" src="images/lanrenzhijia2.jpg"  >
5. <img  id="photo2" class="stackphotos" src="images/lanrenzhijia3.jpg" >
6. <img   id="photo3" class="stackphotos"  src="images/lanrenzhijia1.jpg" >
7. </div>
8. <!--Stack 2  -->
9. <div class="image_stack" style="margin-left:300px">
10. <img id="photo1" class="stackphotos" src="images/lanrenzhijia4.jpg"  >
11. <img  id="photo2" class="stackphotos" src="images/lanrenzhijia5.jpg" >
12. <img   id="photo3" class="stackphotos"  src="images/lanrenzhijia6.jpg" >
13. </div>
14. <div class="single_photo">
15. <ul id="pics">
16. <li><a href="#pic1" title="Photo"><img src="images/lanrenzhijia3.jpg" alt="picture"></a></li>
17. </ul>
18. </div>
19. </div>

接下来是CSS，相对复杂一点，因为有用到CSS3相关的一些特性。

CSS代码：

主要是rotate实现图片翻转折叠的效果，另外指定了0.2s的ease动画。

1. .image_stack img { /* css style for photo stack */
2. border: none;
3. text-decoration: none;
4. position: absolute;
5. margin-left:0px;
6. width: 5074px;
7. height: 5074px;
8. }
9. .image_stack { /* css style for photo stack */
10. width: 400px;
11. position: absolute;
12. margin:60px 10px 10px;
13. }
14. .image_stack img { /* css style for photo stack */
15. position: absolute;
16. border: 4px solid #FFF;
17. box-shadow: 2px 2px 8px rgba(0, 0, 0, 0.5);
18. -moz-box-shadow: 2px 2px 8px rgba(0, 0, 0, 0.5);
19. -webkit-box-shadow: 2px 2px 8px rgba(0, 0, 0, 0.5);
20. z-index: 9999;
21. /* Firefox */
22. -moz-transition: all 0.2s ease;
23. /* WebKit */
24. -webkit-transition: all 0.2s ease;
25. /* Opera */
26. -o-transition: all 0.2s ease;
27. /* Standard */
28. transition: all 0.2s ease;
29. }
30. .image_stack #photo1 {  /* position of last photo in the stack */
31. top: 8px;
32. left: 108px;
33. }
34. .image_stack #photo2 {/* position of middle photo in the stack */
35. top: 6px;
36. left: 104px;
37. }
38. .image_stack #photo3 {/* position of first photo at the top in the stack */
39. top: 4px;
40. left: 100px;
41. right: 100px;
42. }
43. .image_stack .rotate1 {/* rotate last image 15 degrees to the right */
44. -webkit-transform: rotate(15deg); /* safari and chrome */
45. -moz-transform: rotate(15deg);/*firefox browsers */
46. transform: rotate(15deg);/*other */
47. -ms-transform:rotate(15deg); /* Internet Explorer 9 */
48. -o-transform:rotate(15deg); /* Opera */
49. }
50. .image_stack .rotate2 {/* css not used*/
51. -webkit-transform: rotate(0deg); /* safari and chrome */
52. -moz-transform: rotate(0deg);/*firefox browsers */
53. transform: rotate(0deg);/*other */
54. -ms-transform:rotate(0deg); /* Internet Explorer 9 */
55. -o-transform:rotate(0deg); /* Opera */
56. }
57. .image_stack .rotate3 {/*rotate first image 15 degrees to the left*/
58. -webkit-transform: rotate(-15deg); /* safari and chrome */
59. -moz-transform: rotate(-15deg); /*firefox browsers */
60. transform: rotate(-15deg);/*other */
61. -ms-transform:rotate(-15deg); /* Internet Explorer 9 */
62. -o-transform:rotate(-15deg); /* Opera */
63. cursor: pointer;
64. }

jQuery代码：

1. $(document).ready(function() {
2. $(".image_stack").delegate(‘img‘, ‘mouseenter‘, function() {//when user hover mouse on image with div id=stackphotos
3. if ($(this).hasClass(‘stackphotos‘)) {//
4. // the class stackphotos is not really defined in css , it is only assigned to each images in the photo stack to trigger the mouseover effect on  these photos only
5. var $parent = $(this).parent();
6. $parent.find(‘img#photo1‘).addClass(‘rotate1‘);//add class rotate1,rotate2,rotate3 to each image so that it rotates to the correct degree in the correct direction ( 15 degrees one to the left , one to the right ! )
7. $parent.find(‘img#photo2‘).addClass(‘rotate2‘);
8. $parent.find(‘img#photo3‘).addClass(‘rotate3‘);
9. $parent.find(‘img#photo1‘).css("left","150px"); // reposition the first and last image
10. $parent.find(‘img#photo3‘).css("left","50px");
11. }
12. })
13. .delegate(‘img‘, ‘mouseleave‘, function() {// when user removes cursor from the image stack
14. $(‘img#photo1‘).removeClass(‘rotate1‘);// remove the css class that was previously added to make it to its original position
15. $(‘img#photo2‘).removeClass(‘rotate2‘);
16. $(‘img#photo3‘).removeClass(‘rotate3‘);
17. $(‘img#photo1‘).css("left","");// remove the css property ‘left‘ value from the dom
18. $(‘img#photo3‘).css("left","");
19. });;
20. });

其实jQuery也没什么事情，主要是动态为图片增加和删除类，用addClass和removeClass实现，这样鼠标滑过图片就可以翻转，鼠标离开图片又能够恢复，很不错吧。