Sum with javascript returning wrong value

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Sum with javascript returning wrong value

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#1 by (2 votes)

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I have some fields on my page and they have values, I get those values and somo, it happens that the value goes wrong, how do I get them from the DOM and ends up coming as a string, I convert to a number, so instead of posting everything the code here, comes out something like this:

var valor = parseInt("3.50");
console.log(valor + valor);

The value I expected was 7.00, but it returns me 6, meaning the sum seems to be wrong. Note: I'm still learning

javascript

asked by anonymous 11.10.2018 / 18:10

1 answer

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score 2 · Accepted Answer

var valor = parseFloat("3.50");
console.log(valor + valor);

You are transforming the string to Integer it will round down to standard, in case you can round up using Math.round() or as you are using real number use parseFloat()