Storm Validate

Example

The fields below are a mix of .NET MVC rendered and plain HTML5 markup, some woith recyclable server-rendered error nodes, some without that are generated by the library.

String Based

Required String

Custom validator (value must equal 'test', but is not required)

String with min and max length, not required

Email address + required

Regular Expression/pattern (at least one letter [a-z]) + required

URL + required

Remote validation (no backend so the library will surface the fetch error)

Number Based

HTML5 number optional, at least 2, recycling data-valmsg-for span for error messages

Optional Range Numeric must be between 5 and 10

Others

Upload

Password

Confirm Password (equalto validation agaonst password field above)

Checkbox group

Option 1

Option 2

---

Installation

$ npm i -S storm-validate

Usage

HTML

import Validate from 'storm-validate';

Or include dist/storm-validate.standalone.js in a script tag for unobstrusive auto-validation.

let validator = Validate.init('form');

validator.addMethod(
    'MyFieldName', //input/input group name
    (value, fields, params) => { //validation method
        return value === 'test'; //must return boolean
    },
    'Value must equal "test"' //error message on validation failure
);