c2n/web-componentsv0.0.6
GitHub repository

Text Field

Single-line input with icon slots, clear button, helper and error text, and a character counter.

c2-text-field wraps a native <input>, so type, name, autocomplete, maxlength, pattern, required and the input / change events behave like the built-in control. Around it the field adds what a form usually needs: prefix-icon and suffix-icon slots (an inline SVG, a c2-feather-* icon, a c2-mat-icon or a short adornment text), a clearable button, help text under the field, an error state with error-text, a n / max counter when maxlength is set, and a help-icon slot beside the field. Hover darkens the border, focus turns it brand blue with a soft ring, error turns both red.

The field has no intrinsic width: set a width on the host or place it in a grid. Its height follows --c2-text-field--min-height, padding and font size, so a compact or large field is a handful of variables on a class (see the Sizes row and the Compact / Large gallery cards). For a caption, pair it with c2-label and point the label’s for at the field’s id.

Installation

npm install @c2n/text-field

Usage

$USDhttps://.com
Full name
Email

Reading the value

input fires on every keystroke and change when the value is committed, both re-dispatched from the inner input with value already updated. The clear button empties the field, then fires clear, input and change. Once the user has typed, setting the value attribute no longer changes the field (like a native input); call reset() to return to the attribute value, or set the value property.

const field = document.querySelector('c2-text-field')

field.addEventListener('input', () => {
  field.error = !field.value.includes('@')
  field.errorText = field.error ? 'Enter a valid email address.' : ''
})

field.addEventListener('change', () => save(field.value))

field.value = 'ada@example.com' // programmatic update
field.reset() // back to the value attribute, error cleared

Theming

--c2-text-field--* styles the box (border per side, radius per corner, padding, colours, font) with __hover, __focus, __error, __read-only and __disabled states. --c2-text-field__icon--* sizes and colours the slotted icons, __clear-icon--* the clear button, __help-icon--* the icon beside the field and __supporting-text--* the helper line. Every variable and its default is listed on the API tab; the Gallery tab has ready-made looks.

c2-text-field.soft {
  --c2-text-field--background: #f4f4f5;
  --c2-text-field--border-top: 1px solid transparent;
  --c2-text-field--border-right: 1px solid transparent;
  --c2-text-field--border-bottom: 1px solid transparent;
  --c2-text-field--border-left: 1px solid transparent;
  --c2-text-field__focus--background: #ffffff;
  --c2-text-field__focus--outline: 3px solid rgba(24, 24, 27, 0.1);
}
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