<html> <head> <meta charset="utf-8"> <title>jQuery基本选择器</title> <script type="text/javascript" src="https://www.jb51.net/js/jquery-1.x.js"> </script> </head> <body> <div>DOM对象与jQuery对象的相互转化</div> <div>jQuery对象不能直接使用DOM对象的方法，</div> <div>但可以通过将jQuery对象转换成DOM对象后再调用其方法。</div> <span>基本选择器是jQuery中最常用的选择器</span> <script type="text/javascript"> $(function(e){ $("#idDiv").css("color","blue"); $(".classDiv").css("background-color","#dddddd"); $("span").css("background-color","gray").css("color","white"); $("*").css("font-size","20px"); $("#idDiv,.classSpan").css("font-style","italic"); }); </script> </body> </html>
2. 层次选择器
<html> <head> <meta charset="utf-8"> <title>jQuery层次选择器</title> <script type="text/javascript" src="https://www.jb51.net/js/jquery-1.x.js"> </script> </head> <body> <div> 搜索条件<input /> <form> <label>用户名:</label> <input /> <fieldset> <label>密 码:</label> <input /> </fieldset> </form> <hr/> 身份证号：<input /><br/> 联系电话：<input /> </div> <script type="text/javascript"> $(function(e){ $("form input").css("width","200px"); $("form > input").css("background","pink"); $("label + input").css("border-color","blue"); //$("label").next("input").css("border-color","blue"); $("form ~ input").css("border-bottom-width","8px"); //$("form").nextAll("input").css("border-bottom-width","4px"); $("*").css("padding-top","3px"); }); </script> </body> </html>
效果图
