calculating the sum of the array form with javascript

Question

I want to display the number of values in array form. I have a lot of form with only one name is "price []" and have each value on the form. I want to calculate the total value of the form "price []". I'm still a beginner in javascript. and I want to calculate it by using javascript. The following coding that I have made.

<html>
    <body>
        <form id="hitung" name="hitung">
            price 1 <input type="text" name="price[]" class="price" value="1000"/><br>
            price 2 <input type="text" name="price[]" class="price" value="3000"/><br>
            price 3 <input type="text" name="price[]" class="price" value="2000"/><br>
            price 4 <input type="text" name="price[]" class="price" value="1000"/><br>
            price 5 <input type="text" name="price[]" class="price" value="3000"/><br><br>
            total <input type="text" name="total" class="total"/>
        </form>
    </body>
</html>

and I want to ask you again, if there is a new input from the outside, then the total will also be changed directly. how to do it. help me please. thank you

don't you need a quantity to go with price?

charlietfl
– charlietfl

2012-12-28 00:12:30 +00:00
Commented Dec 28, 2012 at 0:12 — charlietfl
– charlietfl, Commented Dec 28, 2012 at 0:12

miku · Accepted Answer · 2012-12-28 00:27:44Z

2

Here's an example: http://jsfiddle.net/c4UyA/1/

var sum = 0;
$("form > input[name='price[]']").each(function() {
    $this = $(this);
    sum += parseInt($this.attr("value"));
});
$("form > input[name='total']").attr("value", sum);

answered Dec 28, 2012 at 0:27

miku

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