Html form checkbox group

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Last updated: Tuesday, September 17, 2019.

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Article Outline

Summary

How to properly mark up a checkbox and customizing its design taking in consideration that the result is accessible and easy to use.

As a user

• As a user, I should be able to navigate by keyboard.
• As a user, I expect that there will be no animation in case I disabled animations from system preferences.
• As a user, I should see a clear focus style.
• As a user, In multiple checkboxes, I should hear the question or title related to them.

Ingredients

of type checkbox are rendered by default as square boxes that are checked (ticked) when activated. They allow you to select or deselect single values in a form.

Default Accessible Checkbox

Let’s mark up a checkbox in HTML.

The checkbox can be activated only by clicking on the box only. If the user clicked on the text, it won’t be activated. This is not good.

Associating the label with the input

To achieve that, an ID should be added to the checkbox . Then, this ID will be used as a for attribute for the element.

Now, when the user clicks on the input’s label text, it will be activated. This is much better!

Preventing Text Selection

Sometimes, when the checkbox is activated/deactivated, the input’s label text got selected like below:

This can be solved by using user-select in CSS.

The question “What’s your favorite meal?” hasn’t been read to the user. As a result, when going through the checkboxes, the user won’t know what the context they are in.

Fieldset for the win

By default, there is an HTML element that is suitable for that use case. It can be marked up as below:

Much better. Now the user can know the context. This is a group and there is a question related to it with multiple answers.

Custom Checkbox Design

Using CSS and Background Images

Most of the time, a custom design for the checkbox is required. Let’s explore how to achieve that.

Since the default checkbox design is not customizable, I will hide it visually and add a pseudo element. By visually, I mean to hide it from the UI and keep it in the DOM for screen reader and keyboard users.

I added some basic CSS to style a fake checkbox with before pseudo element.

Next, I will add the checked style for the checkbox. Since the input is there, it will be used to select the label before pseudo element.

Using Inline SVG

It’s also possible to use an inline SVG element for the checkmark. That way, you can have a bigger control which can open a lot of possibilities.

In the below example, I placed an inline SVG and animated the checkmark path in CSS with stroke-dasharray and stroke-dashoffset properties.

Things to Consider When Customizing a Checkbox

Using Pointer Events

In the custom checkbox I built, the checkbox won’t be active when clicking over the SVG tick element. To avoid that, it’s better to add disable pointer events on it.

In the below GIF, I’m trying to click on the square but it’s not working. It’s like being checked for a few milliseconds and then it’s returned to its initial state. That’s because I’m clicking on the SVG element.

If you’ve noticed, the outline on the first custom checkbox is not a 100% rectangle. See the below figure:

That’s due to that the label itself is an inline element. When adding display: inline-block or display: block to this, the issue is solved and the outline is clear.

For our case, it’s recommended to account for that in CSS and add the following:

@media (prefers-reduced-motion: reduce)  .c-checkbox__label--svg .path  transition: none; > >

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I’m a UX, UI Designer and Front End Developer. I focus on building accessible and easy to use websites and apps. Get in touch by email: contact@ishadeed.com

About the author:

Ahmad Shadeed

UI, UX Designer & Front-End Developer. Writing about web accessibility on @weba11ymatters and sharing articles on my blog. Interested in Modular Design, CSS Architecture and Layout Design.

Источник

HTML Form Group Checkbox Checked: A Comprehensive Guide

Learn all about HTML form group checkbox checked, including grouping checkboxes, retrieving checkbox values, styling checkboxes, best practices, and accessibility. Get expert tips and tricks for creating user-friendly and accessible forms.

• Checkboxes in HTML Forms
• Grouping Checkboxes
• Retrieving Checkbox Values
• Styling Checkboxes
• Best Practices and Accessibility
• Other code samples for HTML form group checkbox checked
• Conclusion
• Can you group checkboxes?
• How do I select multiple values in a checkbox in HTML?
• How to check only one checkbox from multiple checkbox HTML?
• How do I automatically check a checkbox in HTML?

HTML form group checkbox checked is a topic that deals with how checkboxes can be used in a group and what attributes can be applied to them. Checkboxes are an important element of HTML forms that allow users to select multiple options from a group. This blog post will explore the key points, important points, and helpful points related to HTML form group checkbox checked.

Checkboxes in HTML Forms

Checkboxes are used to allow users to select multiple options from a group. Unlike radio buttons, checkboxes are meant to be selected independently. The ‘checked’ attribute can be used to pre-select a checkbox on page load. The HTML5 ‘required’ validation does not work for a group of checkboxes.

In HTML, checkboxes are created using the ‘input’ element with the ‘type’ attribute set to ‘checkbox’. The ‘value’ attribute is used to specify the value of the checkbox when it is checked. For example:

 I have a car 
 I have a bike 
 I have a boat

This code creates a group of three checkboxes with the same name ‘vehicle’. The third checkbox is pre-selected using the ‘checked’ attribute.

Grouping Checkboxes

Checkboxes can be grouped together and act like radio buttons. Checkbox groups can be controlled to only allow one box to be checked at a time. The ‘fieldset’ element can be used to group related form controls.

To group checkboxes, the ’name’ attribute must be set to the same value for all checkboxes in the group. For example:

 
Choose your favorite fruit:
 Apple 
 Banana 
 Orange 

This code creates a group of three checkboxes with the same name ‘fruit’. The ‘fieldset’ element is used to group them together and provide a legend for the group.

Retrieving Checkbox Values

Checkbox values can be retrieved from an HTML form using a loop. The ‘checked’ attribute can be set using JavaScript after the page load. Hidden fields can be used to ensure a definite value for each input on the server-side.

To retrieve checkbox values , the ’name’ attribute is used to identify the group of checkboxes. The value of each checked checkbox is added to an array. For example:

function getCheckboxValues(name) < var checkboxes = document.getElementsByName(name); var values = []; for (var i=0; i> return values; > 

This code defines a function ‘getCheckboxValues’ that takes the name of a group of checkboxes as an argument. It retrieves all checkboxes with the same name and adds the value of each checked checkbox to an array. The array of values is returned by the function.

Styling Checkboxes

Bootstrap provides classes for styling and improving the behavior of checkbox elements. Custom checkbox inputs can be created using HTML and CSS. The ‘form-check-inline’ class can be used to display multiple checkboxes in a single line. Tricks for styling checkboxes include using CSS pseudo-elements to create custom designs.

To style checkboxes, CSS can be used to target the ‘input[type=»checkbox»]’ selector. For example:

input[type="checkbox"] < /* Styles for the checkbox input */ >input[type="checkbox"]:checked < /* Styles for the checked checkbox input */ >

This code targets the ‘input[type=»checkbox»]’ selector and applies styles to it. The ‘:checked’ pseudo-class is used to apply styles to the checked checkbox input.

Best Practices and Accessibility

Best practice is to use checkboxes for multiple selections and radio buttons for single selections. Advancements in HTML and CSS have made it easier to create custom checkbox inputs. tips for improving form accessibility include using clear labels and minimizing the number of required fields. Disadvantages of using checkboxes include increased complexity for the user and potential for errors.

When designing HTML forms, it is important to consider accessibility for all users. Clear labels should be used for all form controls to ensure they are easily understood. Required fields should be minimized to reduce user frustration. Checkboxes should be used for multiple selections and radio buttons for single selections. Custom checkbox inputs can be created using HTML and CSS, but care should be taken to ensure they are accessible to all users.

Other code samples for HTML form group checkbox checked

In Html , for example, html multi checkbox list code sample

 #checkboxes label 
First Second Third 

Conclusion

HTML form group checkbox checked is an important topic for web developers who want to create user-friendly and accessible forms. This blog post has explored the key points, important points, and helpful points related to HTML form group checkbox checked, including how checkboxes work in HTML forms, how they can be grouped, how to retrieve their values, how to style them, and best practices for accessibility. By following the tips and tricks outlined in this blog post, developers can create forms that are easy to use and accessible to all users.

Источник