Javascript numbers concatenate instead of adding but typeof is number not string

Question

I am new to javaScript. I am building a calculator here

I have stored the input values in variables so that I can eventually manipulate the results to perform calcul

Answer 1

Tidy up your code a bit and avoid repetition:

DEMO

$(document).ready(function() {
    $("#calculate").click(function(){   
        var inputs = $("input"), theResult = 0;  // `inputs` is the list of all input elements

        for(var i = 0;i < inputs.length; i++)  // iterate over all inputs
            // parse their value, in base 10, and add to the theResult
            theResult += parseInt(inputs[i].value, 10); 

        alert(theResult); // 42
    });
});