3 replies to this topic

[Hamed]

Hello,
I want to add to number to each other with javascript but it do as string:

function preOrderBook() {
    var num = $('#num').val();
    var cityPrice = $("#city").val();
    var disP = (num * (29000 + cityPrice));
    $("#result").html("هزینه خرید شما:" + disP);
}

disP is int value

[Alexander]

Hello,

Do you mean one of the values is a string and cannot be added, or you wish to display it as a string in the end? I am a little unclear on what you are asking.

[Hamed]

look I read cityPrice from select and it is number and should be added to 29000 ex:
29000 + 1000 = 28000
but it show
290001000 and it is wrong!

[Alexander]

It appears .val returns the value of the form, and not the integer value as some languages do. You must use the parseInt function to parse the string in to an integer, before you can add them together. Two strings of numbers will normally concatenate, as you are observing.

... = parseInt($("#city").val())