How to move the decimal point to the left n spaces with Jquery or JS?

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How to move the decimal point to the left n spaces with Jquery or JS?

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#1 by (4 votes)

3

I have the following code:

 $('#txtFederalCantidad').mask('00000000', { reverse: true });
                    valorFederal = $('#txtFederalCantidad').val(); 
                    $('#txtMonto').mask('00000000', { reverse: true });
                    var Monto = $('#txtMonto').val();
                    var Total = (valorFederal / Monto) * 100;
                    var TotalMostrar = Total.toFixed(2);
                    $('#txtFederalCantidad').mask('00.00', { reverse: true });         
                    $('#txtFederalCantidad').val(TotalMostrar);

Suppose that the variable "TotalShow" results in 1658.99, How can I go through the decimal point so that it appears as 16.5899?

javascript jquery

asked by Oscar Navarro 19.07.2017 в 17:16

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1 answer

Event OnChange jQuery HTML enable and disable fields

score 4 · Accepted Answer

To run the decimal point, just multiply or divide by a multiple of 10.

To run the point to the right you multiply.

To break the point to the left you divide.

Assuming TotalShow is 1658.99

Point to the left

var TotalMostrar = 1658.99;
TotalMostrar /= 100;
//TotalMostrar ahora es igual a 16.5899

Point to the right

var TotalMostrar = 1658.99;
TotalMostrar *= 10;
//TotalMostrar ahora es igual a 16589.9

Now, to determine the amount of spaces, as you say in the question, what you should do is raise 10 to n. For this you can use Math.pow() (more information here )

var n = 2;
var exponente = Math.pow(10, n);
var TotalMostrar = 1658.99;
TotalMostrar /= exponente;