Question

I have a issue using variable in if condition. I have three variable where one is a string type and two more in Json. Here settings.DecimalDigits value is 2 or anything more than 2.

var controlValue = integer + '.' + mantissa;
controlValue = parseFloat(controlValue).toFixed(settings.DecimalDigits);

integer & mantissa will have a certain value which is stored in controlValue as string. controlValue is then compared with other two variables (settings.MaxValue & settings.MinValue) in IF condition but its not going through condition as it type is string type

if (controlValue > settings.MaxValue)
                controlValue = settings.MaxValue;

            if (controlValue < settings.MinValue)
                controlValue = settings.MinValue;

In my parsing all three variables will have three values in floating type

controlValue = 123.23 or 123.00
settings.MaxValue = 99.99
settings.MinValue = -99.99
Please help so that the parsing goes through the IF Condition

Answer 1

jfriend00’s answer helped me solve my problem. Solution below:

            var controlValue = e.target.value; //get value from input
            controlValue = Number(controlValue); //Converting the string to number

            // Number format parses through if condition
            if (controlValue > settings.MaxValue)
                controlValue = Number(settings.MaxValue);
            if (controlValue < settings.MinValue)
                controlValue = Number(settings.MinValue);

            // if the value is having a mantissa 00. It will be rejected by Number() function. So next line its converted again to string format using .toFixed() function. 

            var controlValue = controlValue.toFixed(settings.DecimalDigits);

            // Splitting the value into two parts integer and mantissa 
            integer = controlValue.split('.')[0];
            if (typeof integer == 'undefined' || integer == null || integer == "" || isNaN(integer))
                integer = 0;

           // settings.DecimalDigits is the variable to set any default number of mantissa required to appear. 
            mantissa = controlValue.split('.')[1];
            if (typeof mantissa == 'undefined') {
                mantissa = "";
                for (i = 0; i < settings.DecimalDigits; i++)
                    mantissa += '0';
            }

            // Finally you have the result
            controlValue = integer + '.' + mantissa;