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JS calculation

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Mar 08.2014

i am now developing a wed-based system involving JS calculation which is ADD operator in form.
but i still can’t figure this out

function jumkerusi()
{

var a = parseInt(document.forms[0].jumbyrsofa.value);
var b = parseInt(document.forms[0].jumbyrvip.value);
var c = parseInt(document.forms[0].jumbyrplastik.value);
var s = parseInt(document.forms[0].jumbyrkerusi.value);

s= a+b+c;

document.forms[0].jumbyrkerusi.value =s;
}

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JavaScript

7 Comments(s) ↴

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@JMRKERMar 08.2014 — What does your HTML look like?

What does the error console say?

Try not to double post.
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@ieyzaauthorMar 09.2014 — var a, b and c containing 3 integers which to be sum up using ADD operator and the answer would be in var s.. for example when 1+2+3 turns out to be 123 instead equal to 6. sorry i know it's kinda basic but im still learning this.. tq for ur reply ?
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@JMRKERMar 09.2014 — What does your HTML look like?

What does the error console say?

Try not to double post.[/QUOTE]

var a, b and c containing 3 integers which to be sum up using ADD operator and the answer would be in var s.. for example when 1+2+3 turns out to be 123 instead equal to 6. sorry i know it's kinda basic but im still learning this.. tq for ur reply ?[/QUOTE]

Since you did not answer the 1st post questions :rolleyes:,

the following is a simulation of your problem without the HTML elements.

<i>
</i>&lt;!DOCTYPE html&gt;
&lt;html lang="en"&gt;
&lt;head&gt;
&lt;meta charset="UTF-8" /&gt;

&lt;title&gt; Untitled &lt;/title&gt;

&lt;/head&gt;
&lt;body&gt;
&lt;script type="text/javascript"&gt;
function jumkerusi() {
var sa = '1', sb = '2', sc = '3', ss = '';
var a = parseInt(sa);
var b = parseInt(sb);
var c = parseInt(sc);
// var s = parseInt(ss);
var s= a+b+c;
alert('With parseInt: '+s);
}
function jumkerusiWithoutParseInt() {
var sa = '1', sb = '2', sc = '3', ss = '';
var a = sa;
var b = sb;
var c = sc;
var s= a+b+c;
alert('Without parseInt: '+s);
}

window.onload = function() {
jumkerusiWithoutParseInt();
jumkerusi();
}
&lt;/script&gt;

&lt;/body&gt;
&lt;/html&gt;
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@Kevin2Mar 09.2014 — Or possibly??

function jumkerusi(){
var a = parseInt(document.forms[0].jumbyrsofa.value);
var b = parseInt(document.forms[0].jumbyrvip.value);
var c = parseInt(document.forms[0].jumbyrplastik.value);
var s = parseInt(document.forms[0].jumbyrkerusi.value);
s= [B][COLOR="#FF0000"]1*[/COLOR][/B]a+[B][COLOR="#FF0000"]1*[/COLOR][/B]b+[B][COLOR="#FF0000"]1*[/COLOR][/B]c; // The "1*" forces the math rather than concatenating values
document.forms[0].jumbyrkerusi.value =s;
}
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@JMRKERMar 10.2014 — That's fine, multiplying by 1, but that is the purpose of what the parseInt function does, so it is not needed.

The problem in the original post *may* be related to the HTML entry value.


If there are spaces it might not be converting correctly. That information has never been supplied.
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@ieyzaauthorMar 10.2014 — thnx Kevin2.. it really works.. thnk you very much for ur help ?
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@tech_soul8Mar 10.2014 — thnx Kevin2.. it really works.. thnk you very much for ur help ?[/QUOTE]

It works now but the big question is will it work some other time? For example:

If there are spaces it might not be converting correctly. That information has never been supplied.[/quote]

You're not paying attention to what other forum members asked you about! So this may be just temporary solution until the next time when you come back with the same kind of problem.
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