javascript - 根据推荐人更改表单选择

Question

我有一个表单，要求用户选择两个项目之一。我想这样做，以便如果他们来 self 网站上的特定页面，则已经为他们选择了其中一个选项。我似乎无法在不破坏形式的情况下做到这一点。

表单元素如下所示:

<div class="container-fluid selectLoanPurpose">
    <div>
        <div class="col-xs-6">
            <label class="choose"><input type="radio" name="reason1" value="one" required><span>reason1</span></label>
        </div>
        <div class="col-xs-6">
            <label class="choose"><input type="radio" name="reason2" value="two" required><span>reason2</span></label>
        </div>
    </div>
</div>

我已经尝试过:

<div class="container-fluid selectLoanPurpose">
    <div>
        <div class="col-xs-6">
        <?php if ($_SERVER['PATH_INFO'] == '/reasons') { ?>
            <label class="choose"><input type="radio" name="reason1" value="one" required checked><span>reason1</span></label>
        <?php } else { ?>
            <label class="choose"><input type="radio" name="reason1" value="one" required><span>reason1</span></label>
        <?php } ?>
        </div>
        <div class="col-xs-6">
            <label class="choose"><input type="radio" name="reason2" value="two" required><span>reason2</span></label>
        </div>
    </div>
</div>

我还尝试过使用 $_SERVER['HTTP_REFERRER'] 和 $_SERVER['REQUEST_URI']。它们都不起作用，我的表单不再加载，我只是得到一个白屏。

Answer 1

<?php $referrer = $_SERVER['HTTP_REFERER'];?>
<div class="container-fluid selectLoanPurpose">
    <div>
        <div class="col-xs-6">
        <?php if (strpos($referrer, '/reasons') > -1) { // here we am checking that what ever the URL is but should contain /reason ?>
            <label class="choose"><input type="radio" name="reason1" value="one" required checked><span>reason1</span></label>
        <?php } else { ?>
            <label class="choose"><input type="radio" name="reason1" value="one" required><span>reason1</span></label>
        <?php } ?>
        </div>
        <div class="col-xs-6">
            <label class="choose"><input type="radio" name="reason2" value="two" required><span>reason2</span></label>
        </div>
    </div>
</div>

试试这个。