RestrictedTextField is a lightweight yet useful jQuery plugin that validates and restricts text fields to specific words/characters/strings. Supported text field types: alpha, upperAlpha, lowerAlpha, alphaSpace, upperAlphaSpace, lowerAlphaSpace, alphanumeric, upperAlphanumeric, lowerAlphanumeric, alphanumericSpace, upperAlphanumericSpace, lowerAlphanumericSpace, int, positiveInt, negativeInt, float, positiveFloat, negativeFloat, money, positiveMoney, negativeMoney, accountingMoney, negativeAccountingMoney.