Readonly for html select

HTML Readonly for a Select Tag

1. the Attribute
2. Use the Attribute to Emulate the readonly Attribute for a select Tag in HTML
3. Use the pointer-events: none Attribute to Emulate the readonly Attribute for a select Tag in HTML
4. Conclusion

HTML, Hyper Text Markup Language , is widely used in formatting websites. Also, CSS (Cascading Style Sheets) can be used in styling formatted websites.

Below are some attributes used in HTML and CSS to control the behavior of the user and the cursor.

the Attribute

is the most commonly used HTML tag to get user inputs from the keyboard, mouse, or touch screen. Typically, using allows users to pick one or more options, while using lets users only display the value rather than altering it.

The readonly attribute specifies the input elements are non-editable and read-only. Also, text, URL, telephone number, email, password, date, month, week, time, and number are the supported formats for readonly .

But is not valid in HTML nowadays as it is already deprecated. Instead of that, we can use the disabled attribute.

Use the Attribute to Emulate the readonly Attribute for a select Tag in HTML

The disabled attribute is a Boolean attribute used in specifying the dropdown list is disabled. Using disabled enables the elements to be unclickable and unusable and gets rid of control from users.

Also, the input field displays as not applicable and disables the ability to use.

Let us elaborate on this syntax with an example by creating a dropdown list to get a clearer idea.

 html lang="en">  head>  meta charset="UTF-8">  title>HTML disabled Attributetitle>  head>  body style="text-align: center;">  h1 style = "color: brown;"> HTML Select Disabled Attribute h1>br>  p style="color: black; font-size: large"> What is your Home Country? p>  p style="color: grey"> (Selection of choice is disabled) p>   select disabled>  option value="Sri Lanka">Sri Lankaoption>  option value="India">Indiaoption>  option value="Turkey">Turkeyoption>  select>  body>  html> 

First, we opened an HTML file by defining its meta charset with the title HTML disabled Attribute and opened with all the elements styled to keep the content centered after closing the .

Then, we defined the name of the heading as HTML Select Disabled Attribute with and brown color. We got a line break after the heading by using
.

Then defined a question, What is your home country? using

and with a large font size and black color. After that, we defined a phrase ( Selection of choice is disabled ) with a grey color.

Then the is used to disable the dropdown list. Even if it is disabled with the , we have defined some values for it as Sri Lanka , Turkey , and India .

At the end of the HTML file, all tags used are closed consequently.

According to the output, the disabled dropdown list is grey and out of user control. Users can’t click or choose options from the dropdown list; that’s how the function works.

The difference between readonly and disabled is that using readonly supports users to view the inputs they have provided, while disabled provides users with unclickable elements.

Use the pointer-events: none Attribute to Emulate the readonly Attribute for a select Tag in HTML

pointer-events is another method we can use instead of . Even readonly supports users at least to view when using none along with the pointer-events property; it disables the user’s arrow click events.

Overall, the pointer-events property controls the reactions of the cursor by managing the activities such as responding to mouse events, hovering, clicking, and more. The pointer-events with the none attribute prevent all clicks and control the cursor’s behavior on elements.

Let us define how pointer-events behave with the none attribute through an example using two links in Social Media . In this example, we created an HTML and a CSS file.

 html lang="en">  head>  meta charset="UTF-8">  link rel="stylesheet" href="style.css">  title>Using none in Pointer Eventstitle>  head>  body>  p> Social Media p>  ul>  li>a href="https://www.facebook.com">Facebooka>li>  li>a href="https://www.whatsapp.com">Whatsappa>li>  ul>  body>  html> 

Following the above HTML code, first, we have defined the document type as HTML and the meta charset after opening the . Also, we have linked the style.css file using the href and have defined a title as Using none in Pointer Events .

Once closing the , opened and created an unordered list named Social Media along with two list items: Facebook and Whatsapp , with their associated links.

p  font-size: 40px;  color: blue; >  li  font-size: 20px;  color: brown; >  a[href="https://www.whatsapp.com"]  pointer-events: none; > 

First, we defined the paragraph Social Media to appear in blue with a size of 40px in the styles.css . Also, the list of items is in brown with a font size of 20px.

The pointer-events with the none attribute is applied for one social media link to see the difference.

As you can see in the above output, when we move the cursor to Facebook , it shows a hand sign. But when we move the cursor to Whatsapp , it only remains as an arrow sign.

We hope you have gotten the idea of the pointer-event: none functionality through this example.

Conclusion

Overall, throughout the above content, we have discussed limiting the user access to input elements and selecting and pointing them out. Even though there are many other methods, we have discussed only a few.

Even using is an already deprecated method in HTML5. Instead of using it, we can achieve an output similar to it using the abovementioned techniques.

Nimesha is a Full-stack Software Engineer for more than five years, he loves technology, as technology has the power to solve our many problems within just a minute. He have been contributing to various projects over the last 5+ years and working with almost all the so-called 03 tiers(DB, M-Tier, and Client). Recently, he has started working with DevOps technologies such as Azure administration, Kubernetes, Terraform automation, and Bash scripting as well.

Related Article — HTML Form

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How to apply readonly in a select?

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Select Readonly

readonly does not apply correctly to select

 Cliente Contador Vendedor 

As you can see I can still change the value of select

Select Disabled

What does not happen with disabled that actually blocks select

 Cliente Contador Vendedor 

Here I can not edit, but they are also is sent by the form.

Objective

I need to send the content of the select by the form, but the user can not edit it, its content is auto selected by other factors.

Doubt

• How to block select , but still send its value by form ?
• Would it be possible without js?

Addendum

In this way I have what I want, but I would like a more elegant method, here he can still see the options.

 Cliente Contador Vendedor 

4 answers

You can disable select mouse, keyboard, and touch events using only css , so the field will only have the appearance and behavior of disabled, but it will remain enabled.

• pointer-events: none — Disables ONLY mouse events on the element, any action taken with the mouse on the element will have no effect.
• touch-action: none — Disables touch actions on mobile devices, note that this is experimental technology with little compatibility yet.
• tabindex=»-1″ — As commented by @CaioFelipePereira, the value of input can still be changed with the keyboard. Using the tabindex negative, the field will not be accessible by tab , but if% is assigned focus to input otherwise the value can be changed.
• aria-disabled=»true» — For accessibility issues, tell screen readers that your field is disabled.

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• Chrome: 2.0
• Firefox (Gecko): 3.6 (1.9.2)
• Internet Explorer: 11.0
• Opera: 15.0
• Safari (WebKit): 4.0 (530)

Firstly this is not an exact solution to your problem, it’s just a form you can use, an alternative way so to speak.

Ok, but why? Simply because it is a «gambiarra» and uses the element disabled .

Basically what the code below does is to hide a input field that will have the same value and the same name as select .

No more talk, here’s the demo.

$('#mainform').submit(function() < $('#formdata_container').show(); $('#formdata').html($(this).serialize()); return false; >); $('#enableselect').click(function() < $('#mainform input[name=opcao]') .attr("disabled", true); $('#op-select') .attr('disabled', false) .attr('name', 'opcao'); $('#enableselect').hide(); return false; >);

  Opção 1 Opção 2 Opção 3    
 
Dado enviado:
 

You can see in .js has the line of #enableselect , it is in case you want, you can put an option to activate the user’s choice.

To add the toggle button, simply add Enable below select.

Another option is to use javascript pure. It is the least recommended and should only be used in the last and emergency resort because it works on the client side and can be bypassed using the preview element of the browser (although it does not . ) and it seems like a bug to the user.

To see it working just click here and see the demo in jsfiddle.

Another way to avoid changing the value of select (without using CSS) is to set a onchange to the value of selected . It does not prevent you from opening dropdown , but prevents the value from being changed:

 Cliente Contador Vendedor 

For me, I would really disable the select, except that . the value would be sent to an input hidden, and when I clicked on the submit form it would send the value of the input hidden, the only problem with this approach , or better, with the question in general is if the user regrets the choice and decides to change, then he would have to reload the page again, losing the data he has already filled in the other fields. in this case you would have to add an ‘edit’ button next to the select: link

$('#example').on('change', function() < var selectVal = $(this).val(); $(this).attr(< 'disabled': true, 'aria-disabled': true >); $('#selectHidden').val(selectVal) >);

*, *::after, *::before < box-sizing: border-box; >.container < max-width: 500px; margin: 0 auto; >.form__group < margin-bottom: 5px; >.form__input < display: block; width: 100%; border: 1px solid #ccc; border-radius: 4px; padding: 10px; >.button < border: 0; padding: 10px 15px; border-radius: 4px; >.button--primary

 
 
 
 
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Disable selection when set html select tag as readonly

HTML select field is a common way to get user input. However, when you need the field to be read-only, it can become difficult because users can still change the value of a selection using the select field’s arrow despite the value is not changed. This blog post will show you how to stop this from happening without having any negative consequences on your user experience.

Select fields in HTML are typically used for a user to pick one or more options. These can be inputted via the keyboard, mouse, or touchscreen. But what if you want to prevent the option from being changed? There are many ways to block people from changing things in your HTML select field. You can use JavaScript, jQuery, or CSS.

Let’s use different approaches to handle the HTML form below:

 
 
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Using CSS

Users can still select a read-only select because of the arrow on the right side of the field. We can just use CSS to disable the click events of the arrow.

When the user presses Tab to switch fields in a form, they can still trigger the drop-down event. That’s why in the HTML code of the select field, we need to set its tabindex to -1.

Using JavaScript

This approach sets the select field’s state in 2 steps.

• When the field is first loaded, set its state to disabled to prevent user interaction.
• When the form is submitted, remove the disabled state to allow its value to be passed.

document.querySelector("form").addEventListener("submit", function(e)< document.getElementsByTagName("select")[0].removeAttribute("disabled"); >);

Using jQuery

It is the same as the JavaScript method but switches the language to jQuery for those who love to use this framework.

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