1、radio标签
  <input type="radio" id="ZX2_BLX_AB005" name="zx_zx_blx" value="AB005" />
   <label for="ZX2_BLX_AB005">主项</label>
   <input type="radio" id="ZX2_BLX_AB006" name="zx_zx_blx" value="AB006" checked="checked" />
   <label for="ZX2_BLX_AB006">子项</label>
   <input type="radio" id="ZX2_BLX_AB007" name="zx_zx_blx" value="AB007" />
   <label for="ZX2_BLX_AB007">办理项</label>
2、onchange 实现
<script type="text/javascript">
$(document).ready(function(){
   $('input[type=radio][name=zx_zx_blx]').change(function() {
      if (this.value == 'AB005') {
         console.log('AB005');
      } else if (this.value == 'AB006') {
      console.log('AB006');
      } else if (this.value == 'AB007') {
      console.log('AB005');
      }
   });
});
</script>