本文執行個體講述了JavaScript實現的伸展收縮型菜單代碼。分享給大家供大家參考。具體如下：
運行效果截圖如下：
（1）全選
（2）部分選
（3）反選（全不選）
具體代碼如下：
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Table中的CheckBox</title> <script type="text/javascript" src="script/jquery-1.10.1.js"></script> <style type="text/css"> body { width:100%; height:100%; font-size:12px; } table { width:80%; height:100%; } .tr_odd { background: #EBF2FE; } .tr_even { background: #B4CDE6; } .tab_body { text-align: center; } </style> <script type="text/javascript"> $(function(){ $("tr:odd").addClass("tr_odd");//奇數行背景色 $("tr:even").addClass("tr_even");//偶數行背景色 $("#ckb_head").click(function(){ if($(this).prop("checked")){//全選 $("input[name='ckb']").attr("checked","true"); }else{//全不選 $("input[name='ckb']").removeAttr("checked"); } }); }); //部分選 function ckbSome(){ var flag = true; var selectedCkb = document.getElementsByName("ckb"); for(var i=0;i<selectedCkb.length;i++){ if(selectedCkb[i].checked == false){ flag = false; } if(flag){ document.getElementsByName("check_box")[0].checked=true; }else{ document.getElementsByName("check_box")[0].checked=false; } } } </script> </head> <body> <table> <tr style="background: #CCCCCC;text-align: center;"> <th><input type="checkbox" id="ckb_head" name="check_box"/></th> <th>學號</th> <th>姓名</th> <th>年齡</th> <th>性別</th> </tr> <tr class="tab_body"> <td><input type="checkbox" name="ckb" onclick="ckbSome()"/></td> <td>2013060101</td> <td>張華</td> <td>23</td> <td>男</td> </tr> <tr class="tab_body"> <td><input type="checkbox" name="ckb" onclick="ckbSome()"/></td> <td>2013060102</td> <td>趙雪</td> <td>24</td> <td>女</td> </tr> <tr class="tab_body"> <td><input type="checkbox" name="ckb" onclick="ckbSome()"/></td> <td>2013060103</td> <td>孫旭</td> <td>21</td> <td>男</td> </tr> <tr class="tab_body"> <td><input type="checkbox" name="ckb" onclick="ckbSome()"/></td> <td>2013060104</td> <td>李姝</td> <td>20</td> <td>女</td> </tr> <tr class="tab_body"> <td><input type="checkbox" name="ckb" onclick="ckbSome()"/></td> <td>2013060105</td> <td>公孫旭</td> <td>22</td> <td>男</td> </tr> <tr class="tab_body"> <td><input type="checkbox" name="ckb" onclick="ckbSome()"/></td> <td>2013060106</td> <td>李枝花</td> <td>24</td> <td>女</td> </tr> <tr class="tab_body"> <td><input type="checkbox" name="ckb" onclick="ckbSome()"/></td> <td>2013060107</td> <td>魏徵</td> <td>22</td> <td>男</td> </tr> <tr class="tab_body"> <td><input type="checkbox" name="ckb" onclick="ckbSome()"/></td> <td>2013060108</td> <td>施禮</td> <td>20</td> <td>女</td> </tr> <tr class="tab_body"> <td><input type="checkbox" name="ckb" onclick="ckbSome()"/></td> <td>2013060109</td> <td>王志</td> <td>23</td> <td>男</td> </tr> <tr class="tab_body"> <td><input type="checkbox" name="ckb" onclick="ckbSome()"/></td> <td>2013060104</td> <td>方小許</td> <td>20</td> <td>女</td> </tr> </table> </body> </html>
希望本文所述對大家學習javascript程式設計有所協助。
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