Page Comparison

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Anchor
requiredforminputfield requiredforminputfield

Required Form Input Field

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Make the form element mandatory to complete by applying the “required” attribute to the input tag.

By default, when a form element has been marked as required and receive keyboard focus, the screen reader will announce the form element as “required invalid”.

The form element should be announced as invalid only after it has lost keyboard focus.

Add the “aria-invalid=”false” attribute to the default state to prevent screen readers from announcing the form element as invalid.

When the form input field has keyboard focus: 

•  the screen reader should announce/notify the user that it is a required field

• the screen reader should NOT announce that it is an invalid entry, the form element should be announced as invalid after it has lost keyboard focus

Markup

<label for="fname">First Name:*</label>
<input id="fname" required> required aria-invalid="false">

View HTML Markup on Github

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requiredgroupofradiobuttons requiredgroupofradiobuttons

Required Group of Radio Buttons

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When the legend is announced by the screen reader: 

•  it should notify the user that it is a required form element

Markup

Add an invisible required label, within the legend tag.  that will be announced by the screen reader.

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<fieldset>
<legend>Select your shipping option:<span class="required">required</span></legend>
<input id="overnight" type="radio" name="shipping" value="overnight">
<label for="overnight">Overnight</label><br>
<input id="twoday" type="radio" name="shipping" value="twoday">
<label for="twoday">Two day</label><br>
<input id="ground" type="radio" name="shipping" value="ground">
<label for="ground">Ground</label>
</fieldset>

CSS

.required { 
  display: none;
}

View HTML Markup on Github

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requiredgroupofcheckboxes requiredgroupofcheckboxes

Required Group of Checkboxes

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A sighted user will not see this text.

When the legend is announced by the screen reader: 

•  it should notify the user that it is a required form element

Markup

<fieldset>
<legend>I enjoy the following activities:<span class="required">required</span></legend>
<input id="hiking" type="checkbox" name="toppings" value="hiking">
<label for="hiking">Hiking</label><br>
<input id="biking" type="checkbox" name="toppings" value="biking">
<label for="biking">Biking</label><br>
<input id="running" type="checkbox" name="toppings" value="running">
<label for="running">Running</label><br>
<input id="dancing" type="checkbox" name="toppings" value="dancing">
<label for="dancing">Dancing</label>
</fieldset>

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.required { 
  display: none;
}

View HTML Markup on Github

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requiredsinglecheckbox requiredsinglecheckbox

Required Single Checkbox

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You can make standalone/single checkboxes mandatory to complete by applying the “required” attribute to the input tag.

By default, when a form element has been marked as required and receive keyboard focus, the screen reader will announce the form element as “required invalid”.

The form element should be announced as invalid only after it has lost keyboard focus.

Add the “aria-invalid=”false” attribute to the default state to prevent screen readers from announcing the form element as invalid.

When the checkbox has keyboard focus: 

•  the the screen reader should announce/notify the user that it is a required field

• the screen reader should NOT announce that it is an invalid entry, the form element should be announced as invalid after it has lost keyboard focus

Markup

<input id="agreement" type="checkbox" required aria-invalid="false">
<label for="agreement">All the information I have submitted in this application is true</label>

View HTML Markup on Github