需要在选择单选按钮时启用提交按钮

时间:2012-08-07 07:36:57

标签: javascript jquery

我有一个小表格。我想在选中所有单选按钮后启用提交按钮。

下面是我的代码html

<form action="#" id="form1" method="post">
                <ul>
                    <li>
                        <h3>Here’s what I want:<strong class="result1"></strong></h3>
                        <div>
                        <span><input type="radio" value="Cash Back rewards" name="want" id="01"  /><label for="01">Cash Back rewards</label></span>
                        <span><input type="radio" value="Travel rewards" name="want" id="02" /><label for="02">Travel rewards</label></span>
                        <span><input type="radio" value="Gas rewards" name="want" id="03" /><label for="03">Gas rewards</label></span>
                        <span><input type="radio" value="Shopping rewards" name="want" id="04" /><label for="04">Shopping rewards</label></span>
                    </div>
                    </li>

                    <li>
                        <h3>Here’s my credit story: <strong class="result2"></strong></h3>
                        <div>
                        <span><input type="radio" value="I’m new to credit" name="story" id="05" /><label for="05">I’m new to credit</label></span>
                            <span><input type="radio" value="I pay my bills on time" name="story" id="06" /><label for="06">I pay my bills on time</label></span>
                        <span><input type="radio" value="I’ve had credit issues in the past" name="07" id="issues" /><label id="07">I’ve had credit issues in the past</label></span>
                        </div>
                    </li>

                    <li>
                        <h3>Here’s what I carry:</h3>
                        <span><input type="radio" value="I have a credit card with a good record" name="carry" id="08" /><label for="08">I have a credit card with a good record</label></span>
                        <span><input type="radio" value="I don’t have a credit card with a good record" name="carry" id="09" /><label for="09">I don’t have a credit card with a good record</label></span>

                    </li>
                </ul>
                <input type="submit" value="" name="" class="find" />
                </form>

我在javascript中很弱,请告诉我。

如果li没有修复它将会动态生成,所以我将不得不这样做。基本上每个li都是一个排队,单选按钮是选项。所以问题将是动态生成它可以是任何不。它没有修复

1 个答案:

答案 0 :(得分:3)

这样的事情可以解决问题:

$('#form1 :radio').click(function() {
    var disabled = $('#form1 li').filter(function() { return $(':radio:checked', this).length == 0; }).length > 0;
    $('#form1 .find').prop('disabled', disabled);
});

这假设您的提交按钮在页面加载时被禁用,因为禁用状态仅在选中选项时更改。你当然可以在DOMReady期间进行相同的检查(在这种情况下我会提取监听器功能),但我更喜欢在加载过程中手动设置标记。

Demo

通过选择表单中的所有disabled元素来设置li变量,将其缩小为仅符合过滤条件“不包含已检查的radiobuttons”的元素,并检查简化集合中是否有任何元素。

如果您使用的是小于1.6的jQuery版本,请使用.attr代替.prop来设置禁用状态。