获取index
- <div class="side-menu">
- <h3 class="item">管理中心</h3>
- <div class="menus">
- <p class="title title-close"><span class="grep">订单中心</span><i class="radius"></i></p>
- <ul style="display:none;">
- <li><a href="###">我的订单</a></li>
- <li><a href="###">我的关注</a></li>
- <li><a href="###">浏览记录</a></li>
- <li><a href="###">为我推荐</a></li>
- </ul>
- <p class="title title-close"><span class="grep">客户服务</span><i class="radius"></i></p>
- <ul style="display:none;">
- <li><a href="###">返修/退货</a></li>
- <li><a href="###">取消订单记录</a></li>
- <li><a href="###">我的投诉</a></li>
- </ul>
- <p class="title"><span class="grep">账户中心</span><i class="radius"></i></p>
- <ul>
- <li><a href="###" class="cur">账户信息</a></li>
- <li><a href="###">账户安全</a></li>
- <li><a href="###">账户余额</a></li>
- <li><a href="###">消费记录</a></li>
- <li><a href="###">我的积分</a></li>
- </ul>
- </div>
- </div>
- <script type="text/javascript">
- $(".menus > p").click(function(){
- var index = $('p').index($(this));
- $(this).siblings('p').removeClass("title").addClass("title title-close");
- $(this).parent().find('ul').eq(index).siblings('ul').hide();
- $(this).removeClass("title title-close").addClass("title");
- $(this).parent().find('ul').eq(index).show();
- });
- </script>
JQ的each方法callback回调函数拥有两个默认(可省略)参数:第一个为
对象的属性
或
数组的索引 , 第二个为对应
属性的值
或
索引的内容
当激活的html样式(高亮)与其他html样式差别太大时,用div来实现(big small)
- <ul id="hottop5" class="middle2">
- <li class="middle1">
- <div style="display: none;" class="small">
- <p class="miaoshu"><strong>1/</strong>
- <a href="http://www.test.com/-4000.html">
- 游戏</a>
- </p>
- </div>
- <div class="big" style="display: block;">
- <div class="no1_a">
- <p class="no1 alignleft">1<span>/</span></p>
- <p class="no1_img">
- <a href="http://www.test.com/-4000.html">
- <img src="http://media.test.com/catalog/product/cache/3/small_image/55x55/9df78eab33525d08d6e5fb8d27136e95/images/catalog/product/placeholder/small_image.jpg">
- </a>
- </p>
- </div>
- <div class="no1_w clear">
- <a href="http://www.test.com/-4000.html">
- 游戏
- </a></div>
- </div>
- </li>
- <li class="middle1">
- <div class="small" style="display: block;">
- <p class="miaoshu"><strong>2/</strong>
- <a href="http://www.test.com/catalog/product/view/id/4001/">
- 颜色尺码</a>
- </p>
- </div>
- <div style="display: none;" class="big">
- <div class="no1_a">
- <p class="no1 alignleft">2<span>/</span></p>
- <p class="no1_img">
- <a href="http://www.test.com/catalog/product/view/id/4001/">
- <img src="http://media.test.com/catalog/product/cache/3/small_image/55x55/9df78eab33525d08d6e5fb8d27136e95/images/catalog/product/placeholder/small_image.jpg">
- </a>
- </p>
- </div>
- <div class="no1_w clear">
- <a href="http://www.test.com/catalog/product/view/id/4001/">
- 颜色尺码
- </a></div>
- </div>
- </li>
- <li class="middle1">
- <div class="small" style="display: block;">
- <p class="miaoshu"><strong>3/</strong>
- <a href="http://www.test.com/-3999.html">
- 电银票优惠券</a>
- </p>
- <p class="dian">100.00 兑兑点</p>
- </div>
- <div style="display: none;" class="big">
- <div class="no1_a">
- <p class="no1 alignleft">3<span>/</span></p>
- <p class="no1_img">
- <a href="http://www.test.com/-3999.html">
- <img src="http://media.test.com/catalog/product/cache/3/small_image/55x55/9df78eab33525d08d6e5fb8d27136e95/images/catalog/product/placeholder/small_image.jpg">
- </a>
- </p>
- </div>
- <div class="no1_w clear">
- <a href="http://www.test.com/-3999.html">
- 电银票优惠券
- </a></div>
- </div>
- </li>
- </ul>
- <script type="text/javascript">
- $("#hottop5 > li").each(function (i) {
- $(this).mouseover(function () {
- $(this).siblings().find(".small").show();// 其他显示小图
- $(this).find(".small").hide();
- $(this).siblings().find(".big").hide();
- $(this).find(".big").show(); //显示当前大图
- })
- })
- </script>
你上面的例子, 属于数组(对象数组)形式,如果加参数,第一个参数就是数组的索引值(0,1,2,....),第二个参数为索引下的对象(DOM)。
- var arr1 = [ "one", "two", "three", "four", "five" ];
- $.each(arr1, function(){
- alert(this);
- });
- 输出:one two three four five
- var arr2 = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]
- $.each(arr2, function(i, item){
- alert(item[0]);
- });
- 输出:1 4 7
- var obj = { one:1, two:2, three:3, four:4, five:5 };
- $.each(obj, function(key, val) {
- alert(obj[key]);
- });
- 输出:1 2 3 4 5