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Format Number

beta:  0.2.3 Coverage: unknown Bundle: 10kb Lighthouse: 100 Axe Core Released: 0.0.0
Overview API Examples
DefaultCurrencyPercentUnitNotationSignDisplayFractionDigitsLocaleNumberAttribute

Default

1234567.89
Edit Example

A localized number formatter for currencies, percentages, units, and compact notation, backed by Intl.NumberFormat. Provide a currency attribute when formatStyle is currency, and a unit attribute when formatStyle is unit.

Currency

1234.56 1234.56 1234
Edit Example

ISO 4217 currency code (such as USD or EUR). Required when formatStyle is currency.

Currency Description string default

Percent

0.85 0.126
Edit Example

Percent formatting for ratios and completion values. Source values should already represent a fraction (such as 0.85 for 85 percent).

Unit

1234.56 2048 22
Edit Example

Unit identifier (such as kilometer or byte). Required when formatStyle is unit.

Unit Description string default

Notation

1234567 1234567 1234567 1234567
Edit Example

Number notation: 'standard' | 'scientific' | 'engineering' | 'compact'.

Notation Description standard scientific engineering compact

Sign Display

42 -42 0 -42
Edit Example

Sign display: 'auto' | 'never' | 'always' | 'exceptZero'.

SignDisplay Description auto never always exceptZero

Fraction Digits

1.5 1.567 3
Edit Example

Fraction digit control for tuning decimal precision. Use to enforce fixed decimal places in financial or scientific contexts.

Locale

1234.56 1234 1234567.89
Edit Example

Language tag (such as en-US, de-DE). Defaults to document.documentElement.lang or browser default.

Locale Description string default

Number Attribute

Edit Example

Number attribute input for values supplied by JavaScript or bound data. By default, the component formats text content, which also serves as the SSR fallback, and number wins when both are present.