purify

The library provides a number of battle tested validation functions. Each returns the value supplied or a defaultValue. Mostly, you can leave defaultValue empty, which will cause purify to return undefined in case the value doesn't pass validation.

Usage

The library can be installed by simply installing purify from npm and can be used body on node with require('purify') or as a self-contained UMD browser bundle that can be used directly in a script tag as follows:
<script src="./node_modules/lib/purify.js">

Example

var app = express(),
    purify = require('purify');

app.get('/:userId', function (req, res, next) {
    var userId = purify.positiveInteger(req.param('userId')),
        force = purify.boolean(req.param('force'), true);

    if (userId) {
        // ...
    } else {
        res.send(400);
    }
});

API

• .email(rawValue, defaultValue)

• .emailIdn(rawValue, defaultValue) - Returns e-mail with non-punycoded form regardless of input.

• .domainName(rawValue, defaultValue)

• .domainNameIdn(rawValue, defaultValue) - Returns domain in non-punycoded form regardless of input.

• .url(rawValue, defaultValue)

• .urlWithLocalhost(rawValue, defaultValue)

• .integer(rawValue, defaultValue)

• .integerInRange(rawValue, lower, upper, defaultValue)

• .positiveInteger(rawValue, defaultValue)

• .positiveIntegerOrZero(rawValue, defaultValue)

• .float(rawValue, defaultValue)

• .positiveFloat(rawValue, defaultValue)

• .positiveFloatOrZero(rawValue, defaultValue)

• .nonEmptyVisibleUnicode(rawValue, defaultValue)

• .visibleUnicode(rawValue, defaultValue)

• .nonEmptyPrintableUnicode(rawValue, defaultValue)

• .printableUnicode(rawValue, defaultValue)

• .nonEmptyVisibleAscii(rawValue, defaultValue)

• .visibleAscii(rawValue, defaultValue)

• .nonEmptyPrintableAscii(rawValue, defaultValue)

• .printableAscii(rawValue, defaultValue)

• .alphaNumeric(rawValue, defaultValue)

• .nonEmptyAlphaNumeric(rawValue, defaultValue)

• .alphaNumericWithDot(rawValue, defaultValue)

• .uuid(rawValue, defaultValue)

• .upperCaseUuid(rawValue, defaultValue)

• .lowerCaseUuid(rawValue, defaultValue)

• .json(rawValue, defaultValue)