Ytukyg

I have this function I am using to detect is value is an integer or not. Now when I put decimal numbers, I throws an error in the validation I set for numbers.How will I put values like 5.79. It works on only integers

This is the function to check for integer

      static isInt(value: any) {

        var x: any;



       return typeof value =="number";

    }

I used this validation to check if input value is a number

static checkNumber(value: number, minNumber: number, maxNumber: number): IValdationResuslt {

        if (value >= minNumber) {

            if (value <= maxNumber) {

                return { state: true, message: `Valid` } as Valid;

            }

            return { state: false, message: `Max Characters ${maxNumber} : Entered ${value}` } as IValdationResuslt;

        }

        return { state: false, message: `Min Number ${minNumber} : Entered ${value}` } as Invalid;

    }

This is the input validation check for numbers

static inputValidation(value: any, state: any) {

  switch (state.type) {

    case "number":

      //check if the value is a valid number

      if (this.isInt(value)) {

        //check if the minNumber value hase been exceeded

        return this.checkNumber(value, state.minNumber, state.maxNumber);

      }

      return {

        state: false,

        message: "The value entered is not a number"

      }

      as IValdationResuslt;

    case "telephone":

      //check if the max length value has been exceeded

      if (this.isInt(value)) {

        //check if the minNumber value hase been exceeded

        return this.checkNumber(value, state.minNumber, state.maxNumber);

      }

  }

}

You can use Number.isFinite() to evaluate if an input is number or not

const isNumber = (number) => Number.isFinite(number);



let num = 4;

console.log(`${num} is a number: ${isNumber(num)}`);

num = 4.54;

console.log(`${num} is a number: ${isNumber(num)}`);

num = 'a';

console.log(`${num} is a number: ${isNumber(num)}`);



// 4 is a number: true

// 4.54 is a number: true

// a is a number: false

javascript already has a function called isInteger in it's Number object.
If you want to check if the value is a number but not an integer, just check for:

!Number.isInteger(value) && typeof value == "number"

When I parsed it as a float the error is gone. It was being seen as as string although I set it as a number in the form.This saves the situation.

static isInt(value: any) 

{       

       var check = parseFloat(value)       

       console.log(typeof check)  



       return check



}