?
Solved

difficulty getting field name from form into javascript function

Posted on 2007-12-05
10
Medium Priority
?
2,528 Views
Last Modified: 2008-02-21
Yes this is prob. a stupid question but can't figure it out.

i'm creating a Dynamic generated form.
with field and this generated button...
<input onClick='var aar=document.form.sumtot" + row_no +".name; CalculateTotal(aar);' value='calculate' class='type1c' type='button'>

this way is was able to retrieve the form field name

which can be sumtotal1, sumtotal3, sumtotal..., sumtotal999,...

so the whole point is to get the field name to my external java script.

There is would like to do the following
function CalculateTotal(frm) {
    var order_total = 0

    // Run through all the form fields
    for (var i=0; i < document.form.elements.length; ++i) {

        // Get the current field
        form_field = document.form.elements[i]

        // Get the field's name
        form_name = form_field.name

        // Is it a "product" field?
        if (form_name.substring(0,3) == "box") {
       
       
            // Get the quantity
            item_quantity =form_field.value
        item_price = 1
       
                order_total += item_quantity * item_price
        }
       
       
   
       
    }
    document.form.frm.value= order_total.toFixed(2);


--> where frm is actually sumtotal1, or ...2 or ...99 based on the frm value
0
Comment
Question by:frippel
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 5
  • 3
10 Comments
 
LVL 17

Expert Comment

by:gops1
ID: 20411193
Correct this line

var aar="document.form.sumtot" + row_no +".name"
0
 

Author Comment

by:frippel
ID: 20411234
that's the good one though... like I said I don't want to get the field value.

I realy want the field name into my javascript.

when i do alert(frm) for e.g

i get sumtot3 ...
0
 
LVL 17

Expert Comment

by:gops1
ID: 20411444
ok then store it this way:

var aar=eval("document.form.sumtot" + row_no +".name")
0
VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

 

Author Comment

by:frippel
ID: 20412218
no that doesn't do it it gives me erro of oject.

when i add this to my javascript however i get
also an erro where it tel me that sumtot3 is undifined...
0
 

Author Comment

by:frippel
ID: 20412264
i mean when i replace

function CalculateTotal(frm) {
var order_total = 0
xxo=eval(frm)
for (var i=0; i < document.form.elements.length; ++i) {
form_field = document.form.elements[i]
form_name = form_field.name
 if (form_name.substring(0,3) == "box") {
item_quantity =form_field.value
item_price = 1

order_total += item_quantity * item_price
        }
       
  }
    document.form.xxo.value= order_total.toFixed(2);
0
 

Author Comment

by:frippel
ID: 20413188
or is there a way i could do this

considering i work with a hidden field in the form.

var abcde = document.banza.dieselx.value;
document.form..abcde.value= order_total.toFixed(2);


still get error that abcde is not defined
0
 

Author Comment

by:frippel
ID: 20413318
never minf figured it out with a hidden form field after running the function
0
 
LVL 17

Accepted Solution

by:
gops1 earned 400 total points
ID: 20413678
One thing wrong here is when you are using eval here:

var aar=eval("document.form.sumtot" + row_no +".name")

then you do not have to use eval here

xxo=eval(frm)
0
 
LVL 1

Expert Comment

by:Computer101
ID: 20953169
Forced accept.

Computer101
Community Support Moderator
0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article will give core knowledge of JavaScript and will head in to your first JavaScript program. I am Durvesh Naik and I am here to deal with this series of JavaScript. I will teach you JavaScript in part wise , as its quite boring to read big…
This article discusses how to implement server side field validation and display customized error messages to the client.
The viewer will learn the basics of jQuery, including how to invoke it on a web page. Reference your jQuery libraries: (CODE) Include your new external js/jQuery file: (CODE) Write your first lines of code to setup your site for jQuery.: (CODE)
The viewer will learn the basics of jQuery including how to code hide show and toggles. Reference your jQuery libraries: (CODE) Include your new external js/jQuery file: (CODE) Write your first lines of code to setup your site for jQuery…
Suggested Courses

765 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question