Introduction

To mark or pick a checkbox, the user must first click on the square box representing it. Users can choose one or more selections from a predetermined set of choices. Checkboxes are often used in forms to confirm and validate information. Empty square boxes indicate that they are inactive by default. Dynamic activation, on the other hand, is achievable from the front end. Its functionality may also be deleted or disabled.

HTML form components may have their values modified in two separate ways. There are two options: disabled ("disabled") or read-only ("read-only"). Those two have in common that element data is included in the POST body following submitting a form with a read-only element. Disabled elements, however, are gone from the POST body as if they never existed. It's vital to remember that checkbox elements are a subclass of input elements and that altering their readonly setting restricts changes to the value property.

But checking or unchecking them is not facilitated by this in any way. A checked checkbox that is disabled is not included in POST data and cannot be exploited, even if the state of the checkbox is locked while it is in this position. The checkbox's status is negated and restored to its original state each time a user clicks on it due to this easy Javascript workaround:

<input type="checkbox" onclick="this.checked=!this.checked;" />

How do I Set a JavaScript Checkbox to be Read-only?

To determine if a certain checkbox element is active or disabled, use the "disabled" attribute of the DOM input checkbox. When a checkbox is not disabled, this attribute defaults to returning "false," and when it is, it returns "true." It is used to set the specified checkbox to read-only in this section.

In HTML, How do You Make a Checkbox Read-only?

One way to prevent a user from altering a value unless certain additional requirements are fulfilled (such as checking a box) is to set the read-only property. JavaScript may then make the input field editable by removing the readonly value.

How can I maintain a checkbox disabled in HTML when it is checked?

the check Stat = 1, the checkbox must be disabled; otherwise, leave it enabled. It isn't operating. Every checkbox is disabled.

GetElementByName is not a method.
@dystroy - I am grateful for your response.
Never give an element more than one ID or name!

How can I set a JavaScript checkbox to be read-only?

There is no "readonly" attribute on an HTML element that is a checkbox. You can only make a checkbox seem "readonly" by turning off the control.

Example

<HTML>

<HEAD>

<SCRIPT>

function readOnlyCheckBox() {

   return false;

}

</SCRIPT>

<BODY>

<input type="checkbox" id="cbx1"

  ` onClick="return readOnlyCheckBox()" CHECKED /> readonly

<br/>

<input type="checkbox" id="cbx2"

    CHECKED DISABLED/> disabled

</BODY>

</HTML>

HTML Programming

Examine the provided HTML code first:

Checkbox: <input type="checkbox" id="field1" checked=true>

<button onclick="readOnly()">Make Readonly</button>

This button has onclick="readOnly()">Click Make Readonly.

Within the code block mentioned above:

With the aid of the input type "checkbox," id "field1," and the "checked" property's state of "true," the "tag inserts a "checkbox."
Next, when the button's corresponding "on click" event is triggered, the "tag embeds the button and calls the "readOnly()" method.

This code excerpt is from above:

Create the "readOnly()" function definition.
Using the id "field1," the "checkbox" variable uses its definition to access the specified checkbox by using the "getElementById()" function.
If you change the value of the "disabled" property to "true," the accessible checkbox will be deactivated.

Explained

Whether a checkbox should be disabled or not is determined by the disabled attribute.
Both clickable and useful elements are disabled. The default color of disabled components in most browsers is grey.
The HTML disabled attribute is mirrored in this property.

Framework for HTML:

Our basic HTML framework comprises a label and a checkbox input. The label is associated with the input because of the for property, whose value is the same as the checkbox input's ID.

HTML5 (javascript):

Instead, we make use of the window. onload event to ensure the JavaScript code executes after the page has completely loaded. The checkbox element is selected using a document during the event handler function.getElementById("myCheckbox"). The id of the checkbox input element is "checkbox." The disabled property of the checkbox element is then set to true. This disablement prevents users from interacting with the checkbox.

Ways to Disable the Checkbox

When the checkbox's disabled parameter is set to true, it becomes read-only. Even though the checkbox is visible on the website, when it is disabled, users cannot click on it or change its state.

Playing:

The JavaScript code requires that the checkbox be switched off instantly upon page loading. Users cannot change their current state by clicking on the checkbox. This approach demonstrates using JavaScript to deactivate checkboxes, making them read-only. People who have disabled JavaScript in their browsers will still be able to interact with the checkbox, even if the disabling logic is dependent on JavaScript execution.

Conclusion

In summary, two workable methods to display HTML checkboxes as read-only elements are using the "disabled" attribute in HTML or JavaScript to change the disabled state based on preset criteria dynamically. Due to the absence of a "readonly" option in checkboxes, the "disabled" attribute must be used, thereby ending user interaction with the checkbox.

Developers may guarantee read-only behaviour by handling checkbox statuses using JavaScript methods, which update the checkboxes' "disabled" value dynamically. This approach maintains data integrity and enforces predefined options on forms and interfaces by prohibiting users from altering the state of checkboxes.

JavaScript and HTML allow developers to create robust and user-friendly user interfaces that provide clear read-only status signals and easily modify checkbox behavior in response to evolving requirements or user interactions. The usability and usefulness of forms and online applications may be enhanced using read-only checkboxes in several ways, utilizing HTML and JavaScript.

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