为什么我的javascript/jquery代码不能像预期的那样工作?

I have a code where I expect my checkboxes to be selected and disabled. When I click Zero, all checkboxes should be highlighted, all checkboxes except zeroth checkbox should be disabled. Similarly for one, two and three radio buttons. This does not seem to happen consistently. I am trying it on chrome browser version 48.0.2564.116. Also, the behavior is horrible on Firefox. Can someone please let me know what I am doing wrong?

我有一个代码，我希望我的复选框被选中和禁用。当我单击0时，所有复选框都应该突出显示，除零之外的所有复选框都应该被禁用。1、2、3个单选按钮也是如此。这似乎不是始终如一的。我正在chrome浏览器48.0.2564.116版本上试用。另外，Firefox的行为非常糟糕。有人能告诉我我做错了什么吗?

<html>
  <head>
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.2/jquery.min.js"></script>
    <script>
      $(document).ready(function(){
        $("input[name=radio_group]").prop("checked", false);
        $("input[type=radio]").click( function( e ){
           var whats_selected = $("input[name=radio_group]:checked").val()
           $("input[type=checkbox]").attr('checked',false );

         //disable all other checkboxes
         for(i=0; i < 4; i++ ){
           var elem = $("input[type=checkbox][name*=checkbox"+i+"]");
           elem.click();
           if( i != whats_selected ){
             elem.prop("disabled", true);
           }else{
             elem.removeAttr("disabled");
           }
         }
        });
      });
    </script>
  </head>
  <body>
    <h1>Checkbox play</h1>
    <h3>My 4 Radio Buttons</h3>

    <input type="radio" name='radio_group' value=0>Zero<br>
    <input type="radio" name='radio_group' value=1>One<br>
    <input type="radio" name='radio_group' value=2>Two<br>
    <input type="radio" name='radio_group' value=3>Three<br>

    <p>And here are my checkboxes</p>    
    <input type='checkbox' id="chkbox0" name="checkbox0" value="checkbox0">Checkbox Zero<br>
    <input type='checkbox' id="chkbox1" name="checkbox1" value="checkbox1">Checkbox One<br>
    <input type='checkbox' id="chkbox2" name="checkbox2" value="checkbox2">Checkbox Two<br>
    <input type='checkbox' id="chkbox3" name="checkbox3" value="checkbox3">Checkbox Three<br>
  </body>
</html>

2 个解决方案

#1

I think this should do the trick (if I get your question correctly)

我想这应该能起到作用(如果我答对了你的问题)

  $("input[type=radio]").click(function(e) {
    var whats_selected = $(this).val();
    // check an disable all checboxes
    $("input[type=checkbox]")
      .attr('checked', true)
      .prop('disabled', true);
    // enable the targetted checkbox
    $('#chkbox' + whats_selected)
      .prop('disabled', false);
  });

Have a look at the demo: https://jsfiddle.net/a5og0soL/

看看这个演示:https://jsfiddle.net/a5og0soL/

#2

Here is another way to do it, matching the index of the radio/checkbox pair:

下面是另一种方法，匹配单选/复选框对的索引:

jsFiddle Demo

jsFiddle演示

var ndx;
$(document).ready(function() {

  $("input[type=radio]").click(function() {
	ndx = $("input[type=radio]").index(this);
    $("input[type=checkbox]").attr('checked', true).prop('disabled', true);
    $("input[type=checkbox]").eq(ndx).prop('disabled',false);
  });

}); //END document.ready

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<h3>My 4 Radio Buttons</h3>

<input type="radio" name='radio_group' value=0>Zero
<br>
<input type="radio" name='radio_group' value=1>One
<br>
<input type="radio" name='radio_group' value=2>Two
<br>
<input type="radio" name='radio_group' value=3>Three
<br>

<p>And here are my checkboxes</p>
<input type='checkbox' id="chkbox0" name="checkbox0" value="checkbox0">Checkbox Zero
<br>
<input type='checkbox' id="chkbox1" name="checkbox1" value="checkbox1">Checkbox One
<br>
<input type='checkbox' id="chkbox2" name="checkbox2" value="checkbox2">Checkbox Two
<br>
<input type='checkbox' id="chkbox3" name="checkbox3" value="checkbox3">Checkbox Three
<br>

#1