js 全选

 1 <script type="text/javascript">
 2     function checkAll(name) {
 3         var el = document.getElementsByTagName(‘input‘);
 4         var len = el.length;
 5         for (var i = 0; i < len; i++) {
 6             if ((el[i].type == "checkbox") && (el[i].name == name)) {
 7                 el[i].checked = true;
 8             }
 9         }
10     }
11     function clearAll(name) {
12         var el = document.getElementsByTagName(‘input‘);
13         var len = el.length;
14         for (var i = 0; i < len; i++) {
15             if ((el[i].type == "checkbox") && (el[i].name == name)) {
16                 el[i].checked = false;
17             }
18         }
19     }
20 </script>

1     <form action="result.jsp">
2         <input type="checkbox" name="test1" value=""
3             onclick="if(this.checked==true) { checkAll(‘test‘); } else { clearAll(‘test‘); }" />
4         字母全选开关 <input type="checkbox" name="test" value="a" /> a <input
5             type="checkbox" name="test" value="b" /> b <input type="checkbox"
6             name="test" value="c" /> c <input type="checkbox" name="test"
7             value="d" /> d <input type="submit" value="submit" />
8     </form>

1 <%
2         String list[] = request.getParameterValues("test");
3     for(String s:list){
4     %>
5     <%=s %>
6     <%} %>