Form Validation

Client-side validation and HTML5 validation attributes

verified_user Client-Side Validation
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Occurs in the browser before form submission
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Provides immediate feedback to users
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Reduces server load and network traffic
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Not a replacement for server-side validation
code JavaScript
Custom validation logic
html HTML5
Built-in attributes
build_circle HTML5 Validation Attributes
<input type="email" required>
priority_high
required
Field must be filled
format_size
minlength/maxlength
Character length limits
pattern
pattern
Regular expression match
min_max
min/max
Value range constraints
Form validation example with error and success states
tips_and_updates Best Practices
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Use clear error messages that guide users
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Validate on blur and submit events
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Always implement server-side validation
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Consider accessibility in error display