@seges/angular-validators/src/app/validators/value/decimals.ts

TypeScript 1.8.10

import { IValidator } from "../IValidator";

export interface IDecimalsAttrs extends ng.IAttributes {
    decimals: number;
}

export class DecimalsValidator implements IValidator<void> {
    /**
     * Validate if one value (number) is greater than other
     * Return true if value is greater than compare value. Otherwise return false
     * @param value: Value to check
     * @param attrs: ng.IAttributes
     */
    isValid(value: string, attrs?: IDecimalsAttrs): boolean {
        if (!value || !attrs.decimals) {
            return true;
        }

        // The toString() is invoked to ensure it is actually a string we manipulate.
        // Input elements in IE pass values as strings while the model can pass values as numbers.
        // hence this workaround is required.
        let floatValue = value.toString().replace(",", ".");
        floatValue.toString().split(".");
        let decimals = floatValue.toString().split(".")[1];

        if (!decimals || !decimals.length) {
            return true;
        }

        return decimals.length <= attrs.decimals;
    }
}