Jquery实战学习--属性过滤选择器和子元素过滤选择器

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=gb2312" /><title>属性过滤选择器</title><script type="text/javascript" src="jquery-1.7.js"></script></head><body><!-- 属性过滤选择器的过滤规则是通过元素的属性来获取相应的元素--><div id="div1">aa</div><div id="div2">bb</div><table id="table1"><tr><td>cc</td></tr></table></body><script type="text/javascript">$("div[id]").css("background","red");//选取拥有id属性的元素$("div[id=div2]").css("background","green");//选取div中id属性值为div2的元素，改变样式</script></html>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=gb2312" /><title>子元素过滤选择器</title><script type="text/javascript"  src="jquery-1.7.js"></script></head><body><div class="two"><div class="one">1</div><div class="one">2</div><div class="one">3</div><div class="one">4</div><div class="one">5</div><div class="one">6</div><div class="one">7</div><div class="one">8</div></div></body><script type="text/javascript">//将class为two的div下的子元素改变样式$("div.two :nth-child(even)").css("background","gray");//索引值为偶数背景色为red$("div.two :nth-child(odd)").css("background","orange");//索引值为基数背景色为green。</script></html>