为radio类型的INPUT添加客户端脚本(附加实现JS来禁用onClick事件思路代码)

  下面的例子将展示其结果是没有重载显示提交。

  当用户选择一个选项上面,一个函数叫做“getVote()”执行。该功能所引发的“的OnClick”事件

  

复制代码 代码如下:

  <html>

  <head>

  <script type="text/javascript">

  function getVote(int)

  {

  if (window.XMLHttpRequest)

  {// code for IE7+, Firefox, Chrome, Opera, Safari

  xmlhttp=new XMLHttpRequest();

  }

  else

  {// code for IE6, IE5

  xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");

  }

  xmlhttp.onreadystatechange=function()

  {

  if (xmlhttp.readyState==4 && xmlhttp.status==200)

  {

  document.getElementById("poll").innerHTML=xmlhttp.responseText;

  }

  }

  xmlhttp.open("GET","poll_vote.php?vote="+int,true);

  xmlhttp.send();

  }

  </script>

  </head>

  <body>

  <div id="poll">

  <h3>Do you like PHP and AJAX so far?</h3>

  <form>

  Yes:

  <input type="radio" name="vote"value="0" onclick="getVote(this.value)" />

  <br />No:

  <input type="radio" name="vote"value="1" onclick="getVote(this.value)" />

  </form>

  </div>

  </body>

  </html>

  The getVote() function does the following:

  Create an XMLHttpRequest object

  Create the function to be executed when the server response is ready

  Send the request off to a file on the server

  Notice that a parameter (vote) is added to the URL (with the value of the yes or no option)

  判断控件的disabled属性是不是true,是的话return false;实现禁用radio的onclick事件并可再次启用它

  方法一:(同时实现禁用,重新启用功能,只能针对button text类型的INPUT,对div无法禁用其onclick事件)

  <input type="button" value="A button. Click me to see the alert box." onclick="alert('I am clicked.');" id="cmd1" />

  <br/>

  <input type="button" value="Click me to disable the first button" onclick="document.getElementById('cmd1').disabled=true;" />

  <br/>

  方法二,三:(实现移除radio的onclick事件,需再次重新注册事件,可以禁用div的onclick事件)

  <input type="button" value="Click me to disable the onclick event on first button" onclick="document.getElementById('cmd1').onclick=function(){};" />

  <br/>

  三:

  <input type="button" value="Click me to disable the onclick event on first button" onclick="document.getElementById('cmd1').onclick=null;" />