Usage:
The <input> tag creates input controls for user interaction, allowing them to enter or select data.
Attributes:
- type: Specifies the type of input, such as text, password, checkbox, radio button, etc.
- name: Gives the input a unique identifier.
- value: Specifies the default value.
- placeholder: Provides a提示text inside the input field.
- required: Makes the input mandatory.
- pattern: Defines a regular expression pattern for valid input.
Examples:
- Text input:
<input type="text" name="name">
- Password input:
<input type="password" name="password">
- Checkbox:
<input type="checkbox" name="agree">
- Radio button:
<input type="radio" name="gender" value="male">
HTML Example:
<!DOCTYPE html>
<html>
<body>
<form>
<input type="text" name="username" placeholder="Enter username">
<input type="password" name="password" placeholder="Enter password">
<input type="submit" value="Login">
</form>
</body>
</html>
Accessibility:
- Use descriptive names and placeholders to make inputs easily identifiable by screen readers.
- Ensure that inputs are accessible to keyboard-only users by providing a
tabindex attribute.
- Provide alternative text for images used as input buttons.