Strickland
  • Readme
  • Introduction
    • Validators
    • Validation
    • Validation Results
  • Extensibility
    • Validator Factories
    • Validation Context
    • Validation Result Props
    • Extensibility Pattern
    • formatResult
  • Built-In Validators
    • required
    • compare
    • min
    • max
    • range
    • minLength
    • maxLength
    • length
  • Composition
    • Arrays of Validators
      • every
      • all
      • some
    • Validating Array Elements
      • arrayElements
    • Validating Objects
      • objectProps
      • Advanced Object Validation
      • Nested Objects
      • Arrays of Objects
    • Composition Conventions
    • Composition and formatResult
  • Async Validation
    • Resolving Async Validation
    • Deferred Async Validation
    • Async Validator Arrays and Objects
    • Two-Stage Sync/Async Validation
    • Race Conditions
    • Automatic Race Condition Handling
    • Async Validation and formatResult
  • Form Validation
    • form
    • Async Form Validation
    • validateFields
    • emptyResults
    • updateFieldResults
  • Inspiration
  • Design Goals
  • Wrap-Up
  • Change Log
  • NPM
  • GitHub
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  • Named Props
  • Parameters
  • Usage

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  1. Built-In Validators

min

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Last updated 4 years ago

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The min validator checks that a numeric value is at least the minimum value provided.

If the value being validated is null, false, an empty string, or another falsy value other than 0, then the result will be valid. This respects the rule of thumb described in the notes for the validator.

Named Props

  • min: The minimum value compared against

Parameters

The min validator supports three parameter signatures:

  1. min(value) where the value is used as the min named prop

  2. min(propsObject) where the props object contains a min named prop

  3. min(propsFunction) where the props function returns a props object with a min named prop

Usage

import validate, {min} from 'strickland';

// As a value parameter
const minOf3 = min(3);

// As a named prop
const minOf2 = min({
    min: 2,
    message: 'Must be at least 2'}
);

// As a function that resolves to have the named prop
const minValidator = min((context) => ({
    min: context.min,
    message: `Must be at least ${context.min}`
}));
required