根据其他输入字段有条件地显示/隐藏未标注的标签/输入表单字段

Question

对不起，在原始文章中没有更清楚。

我试图隐藏顶部的两个表单字段区域，当底部的复选框未选中时，不传递任何值，当他们被隐藏。这是wordpress的注册表格，我不想修改html，这会使它更容易，因为我可以接下divs中的标签和输入来隐藏。

这里显示的ID：

（顶部复选框） WS-插件 - s2member定制-REG-场通讯 （中间单选） WS-插件 - s2member定制-REG场-jobalerts （底部复选框ID） ws-plugin - s2member-custom-reg-field-opt-in

@Mosh建议以下是关闭，但只隐藏一个。

// Store the `p` node which contains the label. 
 
var collapseParent = $('label[for="ws-plugin--s2member-custom-reg-field-jobalerts"]').parent(); 
 

 
// Store the `checkbox` that we want to "listen" to 
 
var checkbox = $('[name="ws_plugin__s2member_custom_reg_field_opt_in"]'); 
 

 
// Attach the `change` event on the checkbox and trigger the event so it will fire on page load 
 
checkbox.change(toggle).trigger('change'); 
 

 
// show/hide the `p` node depeneds if the checbox was checked or not 
 
function toggle() { 
 
    collapseParent.toggle(checkbox.is(':checked')); 
 
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> 
 
<p> 
 
    <label for="ws-plugin--s2member-custom-reg-field-newsletters"> 
 
<span style="display:none;">Do you wish to receive JETAAUK Newsletters? *</span> 
 

 
    </label> 
 
    <input type="checkbox" value="1" checked="checked" name="ws_plugin__s2member_custom_reg_field_newsletters" id="ws-plugin--s2member-custom-reg-field-newsletters" aria-required="true" tabindex="59" class="ws-plugin--s2member-custom-reg-field s2conditional1"> 
 
    <label for="ws-plugin--s2member-custom-reg-field-newsletters" style="display:inline !important; margin:0 !important;">Do you wish to receive JETAAUK Newsletters?</label> 
 
</p> 
 
<p> 
 
    <label for="ws-plugin--s2member-custom-reg-field-jobalerts"> 
 
<span>Do you wish to receive job alerts (digest)? *</span> 
 

 
    </label> 
 
    <br> 
 
    <input type="radio" value="weekly" name="ws_plugin__s2member_custom_reg_field_jobalerts" id="ws-plugin--s2member-custom-reg-field-jobalerts---0" aria-required="true" tabindex="60" class="ws-plugin--s2member-custom-reg-field s2conditional2" style="color:#006699;"> 
 
    <label for="ws-plugin--s2member-custom-reg-field-jobalerts-0" class="ws-plugin--s2member-custom-reg-field-op-l" style="display:inline !important; margin:0 !important;">weekly</label>&nbsp;&nbsp; 
 
    <input type="radio" value="daily" name="ws_plugin__s2member_custom_reg_field_jobalerts" id="ws-plugin--s2member-custom-reg-field-jobalerts---1" aria-required="true" tabindex="60" class="ws-plugin--s2member-custom-reg-field s2conditional2" style="color:#006699;"> 
 
    <label for="ws-plugin--s2member-custom-reg-field-jobalerts-1" class="ws-plugin--s2member-custom-reg-field-op-l" style="display:inline !important; margin:0 !important;">daily</label>&nbsp;&nbsp; 
 
    <input type="radio" value="none" name="ws_plugin__s2member_custom_reg_field_jobalerts" id="ws-plugin--s2member-custom-reg-field-jobalerts---2" aria-required="true" tabindex="60" class="ws-plugin--s2member-custom-reg-field s2conditional2" style="color:#006699;"> 
 
    <label for="ws-plugin--s2member-custom-reg-field-jobalerts-2" class="ws-plugin--s2member-custom-reg-field-op-l" style="display:inline !important; margin:0 !important;">none</label> 
 
</p> 
 
<p> 
 
    <label for="ws-plugin--s2member-custom-reg-field-opt-in"> 
 
     <input type="checkbox" name="ws_plugin__s2member_custom_reg_field_opt_in" id="ws-plugin--s2member-custom-reg-field-opt-in" class="ws-plugin--s2member-custom-reg-field" value="1" checked="not" tabindex="70"> 
 
<span style="color:#be0026;"><strong>=&gt; Yes, I wish to receive JETAAUK Newsletters via email &lt;= </strong></span> 
 

 
    </label> 
 
</p>

Answer 1

为了隐藏这两个额外的表单部分将需要使用JavaScript。我个人使用jQuery插件，从你对Mosh Feu的回答的评论中，这不会是一个问题。

代码不是最佳的，但由于您无法更改HTML，我们将使用我们的产品。

// Store the checkbox we'll be monitoring for changes 
 
var checkTrigger = $('#ws-plugin--s2member-custom-reg-field-opt-in'); 
 

 
// Store the items we want to show/hide 
 
// I store the 'none' radio button here - if the HTML changes, this will break 
 
// we use this particular radio button further down 
 
var jobAlerts = $('#ws-plugin--s2member-custom-reg-field-jobalerts---2'); 
 
var newsletterCheck = $('#ws-plugin--s2member-custom-reg-field-newsletters'); 
 

 
// Check for the change of the checkbox 
 
checkTrigger.change(function() { 
 
    toggleForm(checkTrigger.is(':checked')); 
 
}); 
 

 
// Toggle the form 
 
function toggleForm(isChecked) { 
 
    jobAlerts.parent().toggle(isChecked); 
 
    newsletterCheck.parent().toggle(isChecked); 
 

 
    // We'll uncheck the red Newsletter checkbox too, if it's being hidden 
 
    // and we'll set the job alerts to none; 
 
    if (!isChecked) { 
 
    newsletterCheck.prop("checked", false); 
 
    jobAlerts.prop("checked", true); 
 
    } 
 
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> 
 
<p> 
 
    <label for="ws-plugin--s2member-custom-reg-field-newsletters"> 
 
    <span style="display:none;">Do you wish to receive JETAAUK Newsletters? *</span> 
 

 
    </label> 
 
    <input type="checkbox" value="1" checked="checked" name="ws_plugin__s2member_custom_reg_field_newsletters" id="ws-plugin--s2member-custom-reg-field-newsletters" aria-required="true" tabindex="59" class="ws-plugin--s2member-custom-reg-field s2conditional1"> 
 
    <label for="ws-plugin--s2member-custom-reg-field-newsletters" style="display:inline !important; margin:0 !important;">Do you wish to receive JETAAUK Newsletters?</label> 
 
</p> 
 
<p> 
 
    <label for="ws-plugin--s2member-custom-reg-field-jobalerts"> 
 
    <span>Do you wish to receive job alerts (digest)? *</span> 
 

 
    </label> 
 
    <br> 
 
    <input type="radio" value="weekly" name="ws_plugin__s2member_custom_reg_field_jobalerts" id="ws-plugin--s2member-custom-reg-field-jobalerts---0" aria-required="true" tabindex="60" class="ws-plugin--s2member-custom-reg-field s2conditional2" style="color:#006699;"> 
 
    <label for="ws-plugin--s2member-custom-reg-field-jobalerts-0" class="ws-plugin--s2member-custom-reg-field-op-l" style="display:inline !important; margin:0 !important;">weekly</label>&nbsp;&nbsp; 
 
    <input type="radio" value="daily" name="ws_plugin__s2member_custom_reg_field_jobalerts" id="ws-plugin--s2member-custom-reg-field-jobalerts---1" aria-required="true" tabindex="60" class="ws-plugin--s2member-custom-reg-field s2conditional2" style="color:#006699;"> 
 
    <label for="ws-plugin--s2member-custom-reg-field-jobalerts-1" class="ws-plugin--s2member-custom-reg-field-op-l" style="display:inline !important; margin:0 !important;">daily</label>&nbsp;&nbsp; 
 
    <input type="radio" value="none" name="ws_plugin__s2member_custom_reg_field_jobalerts" id="ws-plugin--s2member-custom-reg-field-jobalerts---2" aria-required="true" tabindex="60" class="ws-plugin--s2member-custom-reg-field s2conditional2" style="color:#006699;"> 
 
    <label for="ws-plugin--s2member-custom-reg-field-jobalerts-2" class="ws-plugin--s2member-custom-reg-field-op-l" style="display:inline !important; margin:0 !important;">none</label> 
 
</p> 
 
<p> 
 
    <label for="ws-plugin--s2member-custom-reg-field-opt-in"> 
 
    <input type="checkbox" name="ws_plugin__s2member_custom_reg_field_opt_in" id="ws-plugin--s2member-custom-reg-field-opt-in" class="ws-plugin--s2member-custom-reg-field" value="1" checked="not" tabindex="70"> 
 
    <span style="color:#be0026;"><strong>=&gt; Yes, I wish to receive JETAAUK Newsletters via email &lt;= </strong></span> 
 

 
    </label> 
 
</p>

jQuery代码假定HTML不会改变。如果复选框的ID值发生变化，那么jQuery将会中断。

我知道你不想在这里改变HTML，但从用户界面的角度来看，底部的复选框隐藏了它的上面没有任何意义。用户从左到右，从上到下阅读，底部复选框与上面的元素进行交互，这个通用规则被破坏了。

您应该考虑将触发复选框移动到顶部。

Answer 2

此代码是有点旧丑陋，但这是不改变html的“成本”。

请仔细阅读代码中的说明，以便了解我所做的事情。

如果你想要做这个功能给其他复选框/单选按钮，只需更改元素的选择器（标签/复选框或P节点）

// Store the `p` node which contains the label. 
 
var collapseParent = $('label[for="ws-plugin--s2member-custom-reg-field-jobalerts"]').parent(); 
 

 
// Store the `checkbox` that we want to "listen" to 
 
var checkbox = $('[name="ws_plugin__s2member_custom_reg_field_newsletters"]'); 
 

 
// Attach the `change` event on the checkbox and trigger the event so it will fire on page load 
 
checkbox.change(toggle).trigger('change'); 
 

 
// show/hide the `p` node depeneds if the checbox was checked or not 
 
function toggle() { 
 
    collapseParent.toggle(checkbox.is(':checked')); 
 
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> 
 
<p> 
 
<label for="ws-plugin--s2member-custom-reg-field-newsletters"> 
 
<span style="display:none;">Do you wish to receive JETAAUK Newsletters? *</span></label> 
 
<input type="checkbox" value="1" checked="checked" name="ws_plugin__s2member_custom_reg_field_newsletters" id="ws-plugin--s2member-custom-reg-field-newsletters" aria-required="true" tabindex="59" class="ws-plugin--s2member-custom-reg-field s2conditional1"> <label for="ws-plugin--s2member-custom-reg-field-newsletters" style="display:inline !important; margin:0 !important;">Do you wish to receive JETAAUK Newsletters?</label></p> 
 
    
 
    <p> 
 
<label for="ws-plugin--s2member-custom-reg-field-jobalerts"> 
 
<span>Do you wish to receive job alerts (digest)? *</span></label><br> 
 
<input type="radio" value="weekly" name="ws_plugin__s2member_custom_reg_field_jobalerts" id="ws-plugin--s2member-custom-reg-field-jobalerts---0" aria-required="true" tabindex="60" class="ws-plugin--s2member-custom-reg-field s2conditional2" style="color:#006699;"> <label for="ws-plugin--s2member-custom-reg-field-jobalerts-0" class="ws-plugin--s2member-custom-reg-field-op-l" style="display:inline !important; margin:0 !important;">weekly</label>&nbsp;&nbsp;<input type="radio" value="daily" name="ws_plugin__s2member_custom_reg_field_jobalerts" id="ws-plugin--s2member-custom-reg-field-jobalerts---1" aria-required="true" tabindex="60" class="ws-plugin--s2member-custom-reg-field s2conditional2" style="color:#006699;"> <label for="ws-plugin--s2member-custom-reg-field-jobalerts-1" class="ws-plugin--s2member-custom-reg-field-op-l" style="display:inline !important; margin:0 !important;">daily</label>&nbsp;&nbsp;<input type="radio" value="none" name="ws_plugin__s2member_custom_reg_field_jobalerts" id="ws-plugin--s2member-custom-reg-field-jobalerts---2" aria-required="true" tabindex="60" class="ws-plugin--s2member-custom-reg-field s2conditional2" style="color:#006699;"> <label for="ws-plugin--s2member-custom-reg-field-jobalerts-2" class="ws-plugin--s2member-custom-reg-field-op-l" style="display:inline !important; margin:0 !important;">none</label></p> 
 
    
 
    <p> 
 
<label for="ws-plugin--s2member-custom-reg-field-opt-in"> 
 
<input type="checkbox" name="ws_plugin__s2member_custom_reg_field_opt_in" id="ws-plugin--s2member-custom-reg-field-opt-in" class="ws-plugin--s2member-custom-reg-field" value="1" checked="not" tabindex="70"> 
 
<span style="color:#be0026;"><strong>=&gt; Yes, I wish to receive JETAAUK Newsletters via email &lt;= </strong></span></label></p>