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jQuery implements button click, select all/inverse selection, radio button/check box, text box, form validation

高洛峰Original: 2017-02-06 13:11:341054browse

jQuery implements button click to select all/inverse selection of radio button/checkbox text box form validation

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
 <head>
  <base href="<%=basePath%>">
    
  <title>My JSP &#39;index.jsp&#39; starting page</title>
  <meta http-equiv="pragma" content="no-cache">
  <meta http-equiv="cache-control" content="no-cache">
  <meta http-equiv="expires" content="0">  
  <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
  <meta http-equiv="description" content="This is my page">
  <!--
  <link rel="stylesheet" type="text/css" href="styles.css">
  -->
  <script type="text/javascript" src="jquery-1.4.js"></script>
  <script type="text/javascript">
  $(document).ready(function(){
     //按钮
     $("#but").click(function(){
     alert("This is my JSP page");
     });
       
     //文本框
     $("#btext").click(function(){
     alert($("#te").val());
     });
       
     //下拉框
     $("#sel").change(function(){
     alert($("#sel").val());
     });
       
     //单选框
     $("#uradio1").click(function(){
     alert($(&#39;input[name="radiobuttid=on"]:checked&#39;).val());
     });
     $("#uradio2").click(function(){
     alert($(&#39;input[name="radiobutton"]:checked&#39;).val());
     });
     $("#uradio3").click(function(){
     alert($(&#39;input[name="radiobutton"]:checked&#39;).val());
     });
       
     //复选框
     $("#ucheck").click(function(){
      var str="";//定义一个数组   
      $(&#39;input[name="checkbox"]:checked&#39;).each(function(){//遍历每一个名字为interest的复选框，其中选中的执行函数   
      str+=$(this).val();//将选中的值添加到数组chk_value中  
         
      });
      alert(str);
     });
     //全选
     $("#checkall").click(function(){ 
      $("input[name=&#39;items&#39;]").attr("checked",true); 
     }); 
       
     //全不选
     $("#checkallNo").click(function(){
      $("input[name=&#39;items&#39;]").attr("checked",false);
     });
      
     //反选
     $("#check_revsern").click(function(){ 
      $("input[name=&#39;items&#39;]").each(function(){ 
        $(this).attr("checked", !$(this).attr("checked")); 
       }); 
     }); 
       
     //全选/反选
     $("#checkItems").click(function(){ 
      $("input[name=&#39;items&#39;]").attr("checked",$(this).get(0).checked); 
     }); 
       
     //表单验证
     $("#nameid").hide();
     $("#ageid").hide();
       
     $("#ubu").click(function(){
     if($("#name").val()==""){
       $("#nameid").show();
       $("#nameid").fadeOut(3000);
      return false;
     }else if($("#age").val()==""){
       $("#ageid").show();
       $("#ageid").fadeOut(3000);
      return false;
     }
     alert($("#sel").val());
     alert("姓名："+$("#name").val()+"  "+"年龄"+$("#age").val() );
     });
      
    });
  </script>
 </head>
   
 <body>
  <!-- 按钮 -->
  <input type="button" value="确认" id="but"/><br>
    
  <!-- 文本框 --> 
  <input type="text" name="text" id="te" /><input type="button" id="btext" value="取值"><br>
    
  <!-- 下拉框 -->
  <select id="sel">
    <option value="1">1</option>
    <option value="2">2</option>
    <option value="3">3</option>
  </select>
  <br>
    
  <!-- 单选框 -->
  <input type="radio" name="radiobutton" id="uradio1" value="1"> 1 
  <input type="radio" name="radiobutton" id="uradio2" value="2"> 2
  <input type="radio" name="radiobutton" id="uradio3" value="3"> 3
  <br> 
    
  <!-- 复选框 -->
  <input type="checkbox" name="checkbox" value="1"> 1 
  <input type="checkbox" name="checkbox" value="2"> 2 
  <input type="checkbox" name="checkbox" value="3"> 3 
  <input type="checkbox" name="checkbox" value="4"> 4
  <input type="button" id="ucheck" value="确定">
  <br> 
    
  <!-- 复选框的全选和反选 -->
   <input type="checkbox" name="checkItems" id="checkItems" value="全选/全不选"/>全选/全不选
    <br>
    <input type="checkbox" name="items" value="足球"/>足球
    <input type="checkbox" name="items" value="篮球"/>篮球
    <input type="checkbox" name="items" value="游泳"/>游泳
    <input type="checkbox" name="items" value="唱歌"/>唱歌
    <br>
    <input type="button" name="checkall" id="checkall" value="全选" />
    <input type="button" name="checkall" id="checkallNo" value="全不选" />
    <input type="button" name="checkall" id="check_revsern" value="反选" />
    
  <!-- 表单验证 -->
  <form action="">
     姓名：<input type="text" id="name"><span id="nameid" style="color:#f00;">姓名不能为空！</span><br>
     年龄：<input type="text" id="age"/><span id="ageid" style="color:#f00;">年龄不能为空！</span> <br> 
    <input type="button" id="ubu" value="确定" />
  </form>
 </body>
</html>

This is the first release of a rookie, please point out if there is anything wrong

That’s the entire content of this article, I hope you all like it.

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