不想用radio来控制单选,那就来看看checkbox实现的单选吧

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">  
<html xmlns="http://www.w3.org/1999/xhtml">  
<head>  
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />  
<title>OpenBox</title>  
</head>  
<style>  
.Checkbox_list {
 width: 900px;
 border-collapse: collapse;
 font-family: Arial, Helvetica, sans-serif;
 text-align:center;
}

.Checkbox_list td.content1 {
 border: 1px solid #aaa;
 background-color: #ffffff;
}

.Checkbox_list td.content2 {
 border: 1px solid #aaa;
 background-color: #f8f8f8;
}

.Checkbox_list th {
 border: 1px solid #aaa;
 background-color: #f1f1f1;
 color:#000000;
 height:30px;
}


</style>  
<script type="text/javascript">
function check() {
 var boxList = new Array();
 var list = document.getElementsByTagName("input");
 for(var i=0; i<list.length;i++) {
  if(list[i].type == "checkbox") {
   boxList.push(list[i]);
  }
 }
 if(boxList.length > 0) {
  checkOne(boxList);
 }
}


function checkOne(boxList){
 
  for(var i=0;i<boxList.length;i++) {
  if(boxList[i].checked == "checked" || boxList[i].checked == true) {
   boxList[i].checked = false;
  }
 }
}

function hasCheckOne(divId){
 var boxList = new Array();
 var div = document.getElementById(divId);
 var inputList = div.getElementsByTagName("input");
 for(var i=0;i<inputList.length;i++){
  if(inputList[i].type == "checkbox") {
   boxList.push(inputList[i]);
  }
 }
 if(boxList.length > 0){
  var temp = 0;
  for(var i=0; i< boxList.length;i++) {
   if(boxList[i].checked == true || boxList[i].checked == "checked") {
    temp += 0;
   }
  }
  if(temp == 0) {
   alert("Pls select at least one option");
  }
 }
}
</script> 
<body> 
<div id="test">
<table class="Checkbox_list">
 <thead>
  <th></th>
  <th>11111</th>
  <th>11111</th>
  <th>11111</th>
  <th>11111</th>
  <th>11111</th>
 </thead>
 <tr>
  <td class="content1"><input type="checkbox" onmousedown="check()"></td>
  <td class="content1">22222</td>
  <td class="content1">22222</td>
  <td class="content1">22222</td>
  <td class="content1">22222</td>
  <td class="content1">222222</td>
 </tr>
 <tr>
  <td class="content2"><input type="checkbox" onmousedown="check()"></td>
  <td class="content2">22222</td>
  <td class="content2">22222</td>
  <td class="content2">22222</td>
  <td class="content2">22222</td>
  <td class="content2">222222</td>
 </tr>
 <tr>
  <td class="content1"><input type="checkbox" onmousedown="check()"></td>
  <td class="content1">22222</td>
  <td class="content1">22222</td>
  <td class="content1">22222</td>
  <td class="content1">22222</td>
  <td class="content1">222222</td>
 </tr>
 <tr>
  <td class="content2"><input type="checkbox" onmousedown="check()"></td>
  <td class="content2">22222</td>
  <td class="content2">22222</td>
  <td class="content2">22222</td>
  <td class="content2">22222</td>
  <td class="content2">222222</td>
 </tr>
 <tr>
  <td class="content1"><input type="checkbox" onmousedown="check()" on></td>
  <td class="content1">22222</td>
  <td class="content1">22222</td>
  <td class="content1">22222</td>
  <td class="content1">22222</td>
  <td class="content1">222222</td>
 </tr>
</table>
</div>
<input type="button" value="check" onclick="hasCheckOne('test')" />
 
</body>  
</html> 

 

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