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Javascript_14_DOM_radio exercise

黄舟Original: 2017-01-18 16:53:471242browse

Javascript_14_DOM_radio exercise

<html>
 <head>
  <meta http-equiv="Content-Type" content="text/html; charset=GBK">
  <title>DOM_radio练习</title>
  <style type="text/css">
   #div_id_1{
    display:none;
   }
   #ul_id_1{
    list-style:none;
    margin:0px;
   }
   .close{
    display:none;
   }
   .open{
    display:block;
   }
  </style>
   ＝＝＝＝＝＝＝＝＝＝＝＝＝＝我是分割线＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
    /*
     * 需求：根据所选的单选按钮，展开显示相应的结果
     */
  <script type="text/javascript">
   function showResult(){
    //1,要先判断是否有答案被选中。 
    //2,获取所有fruit的radio。并遍历判断checked状态。
    var collFruit = document.getElementsByName("fruit");
    var flag = false;
    var score;
    for(var x=0; x<collFruit.length; x++){
     if(collFruit[x].checked){
      flag = true;
      score = collFruit[x].value;
      break;
     }
    }
    var oSpan=document.getElementById("span_id_err");
    if(!flag){
     oSpan.innerHTML = "还没选答案呢！".fontcolor("red");
     return;
    }
    oSpan.innerHTML = "";
    var oDiv_r1=document.getElementById("div_result_id_1");
    var oDiv_r2=document.getElementById("div_result_id_2");
    if(score>=1 && score<=3){
     oDiv_r1.className = "open";
     oDiv_r2.className = "close";
    }
    else{
     oDiv_r1.className = "close";
     oDiv_r2.className = "open";
    }
   }
  </script>
 </head>
 <body>
   <div>
     欢迎参与性格测试：您喜欢的水果是什么？
     <ul id="ul_id_1">
     <li><input type="radio" name="fruit" value="1" />葡萄</li>
     <li><input type="radio" name="fruit" value="2" />西瓜</li>
     <li><input type="radio" name="fruit" value="3" />苹果</li>
     <li><input type="radio" name="fruit" value="4" />芒果</li>
     <li><input type="radio" name="fruit" value="5" />樱桃</li>
     </ul>
   </div>
   <div>
    <input type="button" value="查看测试结果" onclick="showResult()" />
    <span id="span_id_err"></span>
    <div id="div_result_id_1" class="close">1-3分：你的性格内向，建议...</div>
    <div id="div_result_id_2" class="close">4分以上：你的性格外向，建议...</div>
   </div>
   ＝＝＝＝＝＝＝＝＝＝＝＝＝＝我是分割线＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
    /*
     * 需求：点击单选按钮是 展开，否关闭！
     */
  <script type="text/javascript">
   function show_2(oRadio){
    var oDiv = document.getElementById("div_id_1");
    with(oDiv.style){
     if(oRadio.value=="yes"){
      display = "block";
     }else{
      display = "none";
     }
    }
   }
   function show_1(oRadio){
    var oDiv = document.getElementById("div_id_1");
     if(oRadio.value=="yes"){
      oDiv.style.display = "block";
     }else{
      oDiv.style.display = "none";
     }
   }
  </script>
  <div>
  您要参与问卷调查吗：
  <input type="radio" name="1" value="yes" onclick="show_2(this)" />是  
  <input type="radio" name="1" checked="checked" onclick="show_2(this)" />否
  </div>
  <div id="div_id_1">
  问卷调查内容：<br/>
  您的姓名：<input type="text" /><br>
  您的邮箱：<input type="text" />
  </div>
 </body>
</html>

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