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Currency Validator to account for commas in input
var currencyValidator = {
format: function (number) {
return (Math.trunc(number * 100) / 100).toFixed(2)
},
parse: function (newString, oldNumber) {
var CleanParse = function (value) {
return { value: value }
}
var StringParse = function (string) {
return parseFloat(string.replace(/,/g, ''))
}
var CurrencyWarning = function (warning, value) {
return {
warning: warning,
value: value,
attempt: newString
}
}
var NotAValidDollarAmountWarning = function (value) {
return new CurrencyWarning(newString + ' is not a valid dollar amount', value)
}
var AutomaticConversionWarning = function (value) {
return new CurrencyWarning(newString + ' was automatically converted to ' + value, value)
}
var newNumber = Number(StringParse(newString))
var indexOfDot = newString.indexOf('.')
var indexOfE = newString.indexOf('e')
if (isNaN(newNumber)) {
if (
indexOfDot === -1 &&
indexOfE > 0 &&
indexOfE === newString.length - 1 &&
Number(newString.slice(0, indexOfE)) !== 0
) {
return new CleanParse(oldNumber)
} else {
return new NotAValidDollarAmountWarning(oldNumber)
}
}
var newCurrencyString = currencyValidator.format(newNumber)
var newCurrencyNumber = Number(newCurrencyString)
if (newCurrencyNumber === newNumber) {
if (indexOfE !== -1 && indexOfE === newString.length - 2) {
return new AutomaticConversionWarning(newNumber)
} else {
return new CleanParse(newNumber)
}
} else {
return new NotAValidDollarAmountWarning(
newNumber > newCurrencyNumber
? newCurrencyNumber
: oldNumber
)
}
}
}
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