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Validator

en.wikipedia.org/wiki/Validator

A validator is a computer program used to check the validity or syntactical correctness of a fragment of code or document. The term is commonly used in the  ...

The W3C Markup Validation Service

validator.w3.org/

World Wide Web Consortium validator, maintained at W3C by W3C staff and collaborators. Checks the markup validity of Web documents in HTML, XHTML, ...

validator - npm

www.npmjs.com/package/validator

Strings only. This library validates and sanitizes strings only. If you're not sure if your input is a string, coerce it using input + '' . Passing anything other than a ...

Validators — WTForms 3.0dev documentation

wtforms.readthedocs.org/en/latest/validators.html

NOTE this validator used to be called Required but the way it behaved (requiring coerced data, not input data) meant it functioned in a way which was not ...

Feed Validator for Atom and RSS

www.feedvalidator.org/

This is a validator for syndicated feeds. It works with RSS 0.90, 0.91, 0.92, 0.93, 0.94, 1.0, and 2.0. It also validates Atom feeds.

Validation - Laravel - The PHP Framework For Web Artisans

laravel.com/docs/5.1/validation

Manually Creating Validators; Form Request Validation. Working With Error Messages. Custom Error Messages. Available Validation Rules; Conditionally ...

Validator | Define Validator at Dictionary.com

www.dictionary.com/browse/validator

Validator definition, to make valid; substantiate; confirm: Time validated our suspicions. See more.

The WDG's Links to Validators - HTML Help by The Web Design Group

www.htmlhelp.com/links/validators.htm

The Web Design Group's links to HTML validators and other document checkers.

WDG HTML Validator - HTML Help by The Web Design Group

www.htmlhelp.com/tools/validator/

The WDG Validator will check the syntactical correctness of your HTML to help you produce more accessible Web pages.

Validator, yii\validators\Validator - Yii Framework 2.0 API ...

www.yiiframework.com/doc-2.0/yii-validators-validator.html

Validator declares a set of [[builtInValidators|built-in validators] which can be referenced using short names. They are listed as follows: boolean : yii\validators\  ...

More Info

Validators - FormValidation

formvalidation.io

FormValidation comes with various built-in validators listed in ...

Validators | Django documentation | Django

docs.djangoproject.com

A validator is a callable that takes a value and raises a ValidationError if it doesn't meet some criteria. Validators can be useful for re-using validation logic ...

Validator – Commons Validator - Apache Commons

commons.apache.org

Apr 25, 2016 ... Commons Validator. A common issue when receiving data either electronically or from user input is verifying the integrity of the data. This work ...