To run

$ npm install
$ bundle exec jekyll serve

Updating USWDS to a later version.

There are a couple ways to update the USWDS:

Change theme settings

This site uses custom USWDS theme settings in ./assets/uswds-theme. Use this if you want to include or remove utilities or update utility settings.

1. Compile usds.css gulp uswds-build-sass
2. Run jekyll bundle exec jekyll serve

Only update the USDS.css without getting new functions and tokens for use in usds.gov project files

Use this to patch any display bugs through updates to USWDS.

1. Install the package npm install --save-dev *new-USWDS-version-number*
2. Compile usds.css gulp uswds-build-sass
3. Run jekyll bundle exec jekyll serve

Update USDS and get new functions and tokens for use in usds.gov project files

This will will update some of the scss files in ./assets/uswds-sass, but will not overwrite any of your files in ./assets/uswds-theme.

1. Install the package npm install --save-dev *new-USWDS-version-number*
2. Run gulp update
3. Compile usds.css gulp uswds-build-sass
4. Run Jekyll bundle exec jekyll serve

How the prototype scripting works

When submitting the form, data will be pushed to session storage and pulled back immediate so that based on answers, you can link to different pages or perform other kinds of actions.

To do this, you'll need to have this snippet at the bottom of each page:

<script>
  $(document).ready(function() {
    $('form').on('submit', function() {
      if (!checkValidityIfSupported($('form').get(0))) {
        return false;
      }
      else {
        nextPage("next-page.html");
        return false;
      }
    });
  });
</script>

When we run updateStoredData(), we are taking the value entered in any type of input and placing that in the session storage as a key/value pair. The key is saved as a variable. So lets you want to drive people named "Bob" to one page and everyone else to another page. You would need to have this input in your form:

<input id="first_name" name="first_name" type="text" >

Then in the <script> at the bottom you can do:

<script>
  $(document).ready(function() {
    $('form').on('submit', function() {
      if (!checkValidityIfSupported($('form').get(0))) {
        return false;
      }
      else {
        updateStoredData();

        if (first_name == "Bob") {
          nextPage("bob.html");
        }
        else {
          nextPage("others.html");
        }
        return false;
      }
    });
  });
</script>

Follow-up questions

In some forms, you may want to ask an inline follow-up if a user selects a specific answer. This is enabled on radios, select boxes, and checkboxes using a mix of data attributes and id attributes.

On the form element that triggers a follow-up, use the data-followup attribute with a value that corresponds to the id of element you wish toggle on and off. The follow-up can appear in any part of the DOM and can include any type of content. For accessibility, also use aria-controls and aria-expanded attributes.

<input id="other" type="radio" name="historical_figure" value="Other" data-followup="historical-figure-followup" data-controls="historical-figure-followup" aria-expanded="false" required>
<label for="other">Other</label>
<div id="historical-figure-followup" hidden>
    <label for="other-hero">Specify</label>
    <input type="text" id="other-hero" disabled>
</div>

Select Boxes

For Select boxes, put the data-followup on the <option>.

<label for="additional_field">Additional Field?</label>
<select name="additional_field" id="additional_field">
  <option value=""></option>
  <option value="no">No</option>
  <option value="yes" data-followup="additional_field_q">Yes</option>
</select>
<div id="additional_field_q" hidden aria-hidden="true">
    <label for="g">What is it?</label>
    <input type="text" id="g" >
</div>

Printing Form Data

Form data can be printed in either inputs or HTML elements using the data-print attribute. The value of that attribute should equal the ID of the corresponding input. So, if we wanted to greet Bob on his page, we would write:

<p>Welcome to your very own page, <span data-print="first_name"></span><p>

If you were persisting data in a form, you can add the data-print attribute to an input. The ID doesn't have to match:

<input id="first_name" name="first_name" type="text" data-print="first_name">

URL Parameters

Any page loaded with a URL parameter or parameters will be stored as key/value pairs in sessionStorage. For example, when you visit a page as http://site.com?foo=bar, your sessionStorage will be updated with foo: "bar" to use later.

Filtering Content on the page

Filtering content will allow you to handle multiple states on a single page. For example, let's say you have a page that would show some content that is conditional upon some stored data. You can use the data attribute data-filter-[STORED_ID]="[STORED_ID_VALUE]" to keep it on the page. If the STORED_ID_VALUE attribute does not match what is in your session data, the element will be removed from the DOM.

If filtering content, use underscores as separators, note hyphens

// Session Data { foo: "bar" }

<div data-filter-foo="bar">     // Element stays on page
<div data-filter-foo="baz">     // Element is removed
<div data-filter-foo="bar baz"> // Element stays on page

Using Jekyll includes for the form fields

All form fields in the prototype are handled by Jekyll includes. Here are includes for the following types of input includes and the parameters they accept.

All form fields are required by default unless the optional parameter is passed into the include.

Text (with a param, could be modified to be any basic text input)

If fields are not indicated as required, they do not need to be included.

{% include form-fields/_text-field.html
  id="first_name"                            
  label_text="Form label"                    
%}

Required parameters

• id="foo_bar": Needs to use underscores. Maps to name and id attributes.
• label_text="Foo bar": This is the label text.

Optional Parameters

• label_classes="class1 class2": Adds class names to the label. Can use one or multiple.
• optional="true": Only accepts "true", makes form field optional instead of required by removing the required attribute. Also adds "(Optional)" next to the label text.
• hint="This is some hint text": Hint text under the label
• type="email": Can be any HTML5 input type (sample displays email). By default, inputs are type="text".
• input_classes="class1 class2": Adds class names to the input. Can use one or multiple.
• prepopulate="session_storage_id": Pre-populates the form field with data from any sessionStorage key, which would usually be the id of another field.
• tel_keyboard="true": Only accepts "true". Uses big numeric telephone keyboard on mobile devices.
• disabled="true": Only accepts true. Disables a field. Use mainly when include is inside a followup.
• input_value="Custom input value": Loads input with custom value for the input.

Textarea

If fields are not indicated as required, they do not need to be included.

{% include form-fields/_text-area.html
  id="first_name"
  label_text="Form label"
%}

Required parameters

• id="foo_bar": Needs to use underscores. Maps to name and id attributes.
• label_text="Foo bar": This is the label text.

Optional Parameters

• label_classes="class1 class2": Adds class names to the label. Can use one or multiple.
• optional="true": Only accepts "true", makes form field optional instead of required by removing the required attribute. Also adds "(Optional)" next to the label text.
• hint="This is some hint text": Hint text under the label
• input_classes="class1 class2": Adds class names to the input. Can use one or multiple.
• prepopulate="session_storage_id": Pre-populates the form field with data from any sessionStorage key, which would usually be the id of another field.
• disabled="true": Only accepts true. Disables a field. Use mainly when include is inside a followup.

Checkbox

{% include form-fields/_text-field.html
  name="checkbox_group"                      
  id="checkbox_1"
  label_text="This is checkbox 1"
%}

Required parameters

• name="checkbox_group": Maps to name attribute that all checkboxes in a set share
• id="foo_bar": Needs to use underscores. Maps to name and id attributes.
• label_text="Foo bar": This sets the label text and value property of the input.

Optional Parameters

• label_classes="class1 class2": Adds class names to the label. Can use one or multiple.
• input_classes="class1 class2": Adds class names to the input. Can use one or multiple.
• checked="true": Only accepts "true". Loads page with checkbox checked.
• prepopulate="session_storage_id": Sets the checkedbox as checked if the sessionStorage key matches the value of the input.
• input_value="Custom input value": Overrides the label_text with a custom value for the input.
• follow_up="followup_id": Must be id of a <div> that includes followup fields or text. See more about follow up questions
• disabled="true": Only accepts true. Disables a field. Use mainly when include is inside a followup.

Radio

{% include form-fields/_radio.html
  name="radio_group"
  id="radio_1"
  label_text="This is radio 1"
%}

Required parameters

• name="radio_group": Maps to name attribute that all radio options in a set share
• id="foo_bar": Needs to use underscores. Maps to name and id attributes.
• label_text="Foo bar": This sets the label text and value property of the input.

Optional Parameters

• label_classes="class1 class2": Adds class names to the label. Can use one or multiple.
• input_classes="class1 class2": Adds class names to the input. Can use one or multiple.
• checked="true": Only accepts "true". Loads page with radio selected.
• prepopulate="session_storage_id": Sets the radio as checked if the sessionStorage key matches the value of the input.
• input_value="Custom input value": Overrides the label_text with a custom value for the input.
• follow_up="followup_id": Must be id of a <div> that includes followup fields or text. See more about follow up questions
• disabled="true": Only accepts true. Disables a field. Use mainly when include is inside a followup.
• optional="true": Only accepts "true", makes radio selection optional instead of required by removing the required attribute.

Select box

{% include form-fields/_select.html
  id="title"
  label_text="Title"
  options=" | Mr. | Mrs. | Ms. | Dr. | Other (Please specify)"
%}

Required parameters

• id="foo_bar": Needs to use underscores. Maps to name and id attributes.
• label_text="Foo bar": This is the label text.
• options="Option 1 | Option 2": Options are separated by |.

Optional Parameters

• label_classes="class1 class2": Adds class names to the label. Can use one or multiple.
• optional="true": Only accepts "true", makes form field optional instead of required by removing the required attribute. Also adds "(Optional)" next to the label text.
• hint="This is some hint text": Hint text under the label
• input_classes="class1 class2": Adds class names to the input. Can use one or multiple.
• prepopulate="session_storage_id": Pre-populates the form field with data from any sessionStorage key, which would usually be the id of another field.
• disabled="true": Only accepts true. Disables a field. Use mainly when include is inside a followup.
• follow_up="followup_id": Must be id of a <div> that includes followup fields or text. See more about follow up questions
• follow_up_optional="true": Only accepts true. Makes the followup question optional.
• follow_up_option="Option 2": Indicates which option will generate the follow up question. Only allowed per select box. Must match one of the options.

Date

By default, dates are MM/DD/YYYY, which are entered in three separate fields.

{% include form-fields/_date.html
  id="todays_date"
%}

Required parameters

• id="some_date": Needs to use underscores. Maps to name and id. The include will add _month, _day, and _year to the name and id.

Optional Parameters

• label_text="Enter date": Changes the text in the legend element. The default legend text id Date of Birth
• hide="day": To exclude other fields. Accepts "day", "month, "year" or a combination such as "day month". Include can be updated for other fields.
• prepopulate="session_storage_id": Used to add value of another key in session storage. Do not include _month, _day, and _year from the sessionStorage key.
• min_year="YYYY": Min year for validation. Example: "1900"
• max_year: Max year for validation. Example: "2019"
• optional="true": Only accepts "true", makes form field optional instead of required
• disabled="true": Only accepts true. Disables all fields. Use mainly when include is inside a followup.

List of states

Select box with all US states

{% include form-fields/_state-select.html
  id="some_state"
%}

Required parameters

• id="some_state": Needs to use underscores. Maps to name and id attributes

Optional Parameters

• label_text="Form label": This is the label text. Otherwise will be "State"
• label_classes="class1 class2": Adds class names to the label. Can use one or multiple.
• optional="true": Only accepts "true", makes form field optional instead of required by removing the required attribute. Also adds "(Optional)" next to the label text.
• input_classes="class1 class2": Adds class names to the input. Can use one or multiple.
• prepopulate="session_storage_id": Pre-selects an option with data from a sessionStorage key, which would usually be the id of another field.
• disabled="true": Only accepts true. Disables a field. Use mainly when include is inside a followup.