Find the sum of all values of spinners with same class

I have a group of spinners <select> input fields and I want to find the sum of them live. I figured the easiest way would be to use jquery's class selector but it does not store the .val()'s of elements of a similar class in an array.

Is there a way to store all the values of a bunch of <select>开发者_运维知识库 Inputs in an array so I can find the sum of all of their values.

My not working code looks like this.

function calcPrice() {
     var price = $('.food').val() || [];
}
$("select").change(calcPrice);

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This might be overkill, but you could use http://www.pengoworks.com/workshop/jquery/calculation/calculation.plugin.htm

or you could simply do:

var price = 0.0
$(".food'").each(function() { 
   price += +this.value
});

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Would you mind to clarify what are the .food elements? Are they input fields? Otherwise, you may want to try using $('.food').text() instead.

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Similar to btiernay's answer, but if you wanted to keep the actual array you can do:

var prices = $.map($(".food"), function () {
   return +this.value;
});

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var expenses = 0.0;
$(".expense").each(function() { 
      expenses += +this.value;
});
$("#expense-total").html(expenses);

Basically the same as btiernay but it has missing ; which could fool noobs. Also added jquery element example to push the final value to a sum field. Sorry I could't add as a comment as I rarely post so reputattion less than 50.

Live example under business expeses here: http://contractor.icalculator.info/calculator/PAYE-calculator.html