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Answer:
The <input type="button"> and <button> tags both create clickable buttons but have important differences. <input type="button"> is an empty (self-closing) tag and can only display text through the value attribute. For example,
<input type="button" value="Click Me" />
creates a button with the label "Click Me."
On the other hand, <button> is a container tag, so it can contain not just text, but also images or other HTML. For example,
<button><img src="icon.png" /> Send</button>
creates a button with an image and text.
Both tags can use attributes like onclick, disabled, or name. However, due to its flexibility, <button> is often preferred for richer button content.
In forms, both can submit data, but developers must specify the type attribute (button, submit, or reset) for <button> to ensure correct behavior.
disabled and readonly attributes work in buttons and textareas. When should each be used?Answer:
For buttons, the disabled attribute makes the button unclickable and grayed out. For example,
<input type="button" disabled />
cannot be interacted with. The readonly attribute is not applicable to buttons.
For textareas, disabled also prevents the user from typing, and the field is skipped when the form is submitted. For example, <textarea disabled> cannot be edited and will not send its data. The readonly attribute makes the textarea non-editable but still allows the user to copy text, and the value is submitted with the form.
Use disabled when you want to block all interaction and submission. Use readonly when you want to display data that can't be edited but should be included in the form.
rows, cols, placeholder, and maxlength attributes in the <textarea> tag with examples.Answer:
rows sets how many lines are visible in the textarea (height). For example, <textarea rows="5"> creates a taller textarea.cols sets the number of characters per line (width). For example, <textarea cols="40"> makes a wider box.placeholder shows a light gray hint in the box, like <textarea placeholder="Enter your comments">. This disappears when the user types.maxlength limits how many characters can be typed. For example, <textarea maxlength="200"> lets users enter a maximum of 200 characters.All these attributes together help you control the appearance and usage of multi-line text fields.
Answer:
A reset button (<input type="reset">) clears all fields in a form and returns them to their original values. This means if a user has typed in data but makes a mistake, clicking "Reset" will remove all changes and restore defaults.
For example, in a feedback form, if a user fills out text fields and textareas but decides to start over, clicking the reset button will quickly clear all input.
This is helpful for forms with many fields or if a user enters confidential information by mistake. It saves time compared to deleting each field manually and ensures no partial or incorrect data is submitted.
Answer:
To design a feedback section, use a <textarea> for long comments and both submit and reset buttons for actions. Example HTML:
<form>
<label for="feedback">Feedback:</label><br />
<textarea
id="feedback"
name="feedback"
rows="5"
cols="40"
placeholder="Enter your comments"
></textarea
><br />
<input type="submit" value="Send Feedback" />
<input type="reset" value="Clear" />
</form>
Here, the multi-line text field lets users write detailed feedback. The "Send Feedback" button submits the form, while the "Clear" button resets all text. This combination is effective for collecting and managing longer responses from users.
Answer:
Riya should use <input> tags for Name and Email (single-line), and a <textarea> for Message (multi-line). She should use the maxlength and placeholder attributes in <textarea> for limits and hints. Example:
<form>
<input type="text" name="name" placeholder="Name" /><br />
<input type="email" name="email" placeholder="Email" /><br />
<textarea
name="message"
rows="6"
cols="40"
maxlength="500"
placeholder="Your message"
></textarea>
</form>
rows="6" sets the field’s height, cols="40" sets the width, maxlength="500" limits input, and placeholder provides guidance. This helps the user and keeps messages clear and within length.
Answer:
You could write:
<form>
<!-- Survey Questions Here -->
<input type="submit" value="Submit" />
<input type="reset" value="Reset" />
<input
type="button"
value="Show Rules"
onclick="alert('1. Answer honestly.\n2. All fields required.');"
/>
</form>
Answer:
For example, use
<input type="text" />
for user names and <textarea> for descriptions.
readonly or disabled? Justify with reasons and code.Answer:
Raju should use the readonly attribute, not disabled.
A readonly textarea shows the content but does not allow editing. It is still included in the form submission. For example:
<textarea name="terms" rows="5" cols="40" readonly>
These are the terms and conditions…
</textarea>
If Raju uses disabled, the textarea will be grayed out and its content will NOT be sent with the form, making it useless for form records. Thus, readonly ensures visibility, prevents editing, and allows inclusion in submission.
Answer:
Disabling a button using the disabled attribute makes it unclickable and grayed out. For example,
<input type="submit" disabled /\>**
In web design, this is done to prevent users from submitting incomplete or incorrect forms. JavaScript is commonly used to detect if required fields are filled, then enable the button.
This design ensures users enter all necessary data, improving form data quality and reducing errors.
For example, in a registration form, the submit button is disabled until Name, Email, and Password fields are filled. This gives users guidance and prevents empty or partial submissions, making the system more reliable and user-friendly.