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Is there any way to edit a URL to embed a form entry?

I know it is possible to embed form values into the URL as parameters if the form has an ID assigned to it. But what if it does not have an ID?
For example the "Search" field in this page:
http://au.autodesk.com/speaker-resource-center/call-for-proposals/voting
<input type="text" placeholder="Search " class="form-control ng-valid ng-dirty search-box" ng-model="search.$" ng-change="updateButtons()">

I know it is possible to embed form values into the URL as parameters if the form has an ID assigned to it.
That is not true.
Server-side (and occasionally client-side) code on a page may read the query string as a means to set default values for form controls (typically so that a form can be corrected and resubmitted if there were errors in the previous attempt).
In these cases, the name attributes will usually map onto the query string (because the form will generate the query string from the name attributes). Often an input will be given an id that is the same as its name.
It is entirely under the control of the site's authors.
There is no way to set values of inputs on another site without the other side providing a mechanism to allow you to do that.

There's a few different ways to do that. Looking at that HTML, it's the first text-type input inside the div, so the first method that comes to mind is this:
You could pull out the div (using the class "search-area") and then target the first text input box within that div. I don't know whether you're using jQuery or native JS or exactly what language/library/framework you're using.
JQuery would be something like:
var inputElement = $(".search-area")[0].first()
This SO answer may help:
jQuery: how to find first visible input/select/textarea excluding buttons?
Edited to add: Answer is targetting the input element. As the answer from someone else mentions.. You can't actually do what you're wanting to do with the URL.
Edited again. Misread the question. I'll leave this here in case someone else needs to know how to target an input field that doesn't have an ID. Alternatively, I have no problems if someone wants to delete this answer.

Form Validation event issue

So I'm trying to write an interactive form, where clicking a radio button will unhide another field in the form. It is for display purpose, so I'm not submitting anything. I'm attempting to use Javascript to validate, but needless to say, it's not working very well. A run through of my code would be appreciated.
Since it's so much code, I'll pastie it to you for convenience...
http://pastie.org/3615669
Thanks :)

Your code:
function getShrimpa(radio, name, ext){
//Use of form 'shrimpa'.
var form = document.shrimpa;
document.form.name.style.display = 'block'; // <---- this is not valid
document.getElementById('shrimpa').innerHTML = ext;
}
You cannot use the variable name like that. It's a string and it will not get "replaced" or whatever you were hoping would happen. You'll need to use document.getElementsByName(name) to select that element. But that will give you a node list so you probably want to use ids instead there.

Prefilled HTML forms FROM buttons

I hope this question has an obvious answer to anyone who knows his way around JS and HTML :)
I have a very specific problem. I am trying to add to the header on a site buttons that will function like 'quick searches' which will basically on click send pre-filled form values to my search page and have the search page also populate these values in the ajax form inside.
Here is a sample search page that's outside of the results page:
http://www.thediamondsexperts.com/index.php?route=product/diamondsearch/jewelry
You'll notice that when you change the values there and click Search, the values also appear in the ajax form on the sidebar of the search results page.
What I simply want to do is create different variations for pre-set searches, and put them as buttons in the header.
When I try to put a few invisible forms in it won't work because of the multiple form values with the same ids but in general I think there must be a simple way to do this server side.
For instance, copy the current function that accepts the search, have it with pre-set values instead of populating the values from the form and then simply calling that function onClick. Does that make sense?
I need to create something simple enough though that would be easy for the admin to later change and customize more buttons so a client-side solution would be best.
Your help is much appreciated!

All you need is a form with hidden inputs and a submit button:
<form>
<input type="hidden" name="param1" value="Predefined value 1" />
<input type="hidden" name="param2" value="Predefined value 2" />
<input type="hidden" name="param3" value="Predefined value 3" />
<button type="submit">Search!</button>
</form>
This will only show the button, but the values will still be sent to your form's action.
...there must be a simple way to do this
server side
...a client-side solution would be best
...copy the current function that accepts
the search, have it with pre-set
values instead of populating the
values from the form and then simply
calling that function onClick. Does
that make sense?
Not really, not to me at least. If you can clarify I'd be glad to help more.
When you say "multiple form values with the same ids", I fear you may be confused: There is no requirement for a form input to have an "id", I think you mean "name", and there's no need to have multiple inputs with the same name in a form unless you want to send an array of values.
I didn't want to go overboard and talk about how the ajax works on that site, because that's another thing altogether and all you seemed to be concerned about was the preset search buttons. Hopefully this helps you figure it out, GL.
EDIT: I'm having a tough time figuring out what you're really asking, if you are trying to duplicate the behavior on that site, please tell us what server side language is available to you, if you're using or open to using any javascript libraries, and what you have tried so far. A full fledged spoon-feeding tutorial is really out of scope, you will get better, clearer help if you share the code from your current attempts.

If you want to pass values from one page to another and handle it client-side, use "get" for the form submit method, and use the handy "gup()" function to grab the param values. You can get more info on gup() here:
function gup( name )
{
name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
var regexS = "[\\?&]"+name+"=([^&#]*)";
var regex = new RegExp( regexS );
var results = regex.exec( window.location.href );
if( results == null )
return "";
else
return results[1];
}
On your initial page, you can either use inputs with type="hidden" or just get the values from the visible inputs (as on your sample page). Then submit to your results page. Given an initial page with something like this...
<form method="get" action="results.html">
<input type="text" name="caratFrom" value="0.7" />
<input type="submit"/>
</form>
... here's sample usage for the results page:
var caratFrom = gup('caratFrom');
// etc.
Then simply assign those values to whatever elements you want, e.g. an input:
<!-- HTML -->
<input type="text" name="caratFromResult" value="" />
// Javascript
document.getElementById('caratFromResult').value = caratFrom;

Submit form values to a script without loading a new page

I have an issue regarding sending form values to a script. I have a form set up, and upon the user pressing a button I want the values in the form to display on another part of the page. I can easily do this with php or another web scripting language, but all I know is how to do this by sending it to the script in a form of
http://www.example.com/myScript.pbp?value1=VALUE
is there a way to do this without loading a new page? Like just show a loading overlay on the page until the script completes and displays the value on the page?
I'm guessing this would be accomplished using Javascript or Ajax or something like that.
If anyone could help me out, or even just say where I should start to look, I'd really appreciate it!

Indeed. Just attach an onsubmit event listener to your form that always returns false to prevent actual sending of your form via the usual GET or POST request.
In your event listener you can send the form values using XMLHttpRequest and let the callback function update the relevant part(s) of your page.
But remember to always create a fallback option (with the usual GET or POST request of the form) to handle your form in case JavaScript is not available (e.g., turned off, blocked, etc.).

Yes AJAX would be exactly how you would do it. Have a look at the tutorial over at Tizag: http://www.tizag.com/ajaxTutorial/index.php
That will get you started in no time at all.

If you just want the values in the form to display on the page again without any interaction with the server then something like jQuery would be the best approach.
Jquery has a nice form plugin that you can do the following:
var form_values = $('#form_name').formHash();
the form_values will then be a hashed array of your form values in the system i.e.
<form id="test">
<input id="test1" name="test1" type="text" value="Test Text"/>
</form>
So form_values['test1'] would hold the value Test Text in it
Once you have the values you could then use some other jquery functions to display them on the page i.e.
<div id="displayDiv"></div>
then your javascript could be
for (key in form_values) {
$('div#displayDiv').append('<div>Key: ' + key + ' Value: ' + form_values[key] + '</div>');
}
This would put your values in the display div

Here is a simple javascript ajax object. You can use without loading any library.

Multiple Page Check Box Handling

In GMail, the mails are listed. When we we have lots of mails (ex:50), we can select and go to next page, select some more mail, and come back to page 1. But whatever mails the user checked will still be checked.
I just want to implement the same operation. How would I do that?
Thanks,
Krish
Note: I don't want to use AJAX. I'd rather use Javascript, CGI, PERL, etc.

Simple in theory. Just store the ids of checked mail in a JavaScript variable and/or cookie, and let them access (via AJAX) as many checkbox lists as they want, before submitting.

<input type="checkbox" onclick="toggleValue(this)"> and in handler check the value and store it in array.
JQuery
$('input[type=checkbox].mail').click(
function()
{
if (this.checked) $(this).addClass('checked');
else $(this).removeClass('checked');
}
);
$('input[type=checkbox].mail.checked').each(function_here);
Can have some typos in the second one...
PS: don't know why, but the code above is not being formatted (

After every time a user selects an email, add the message id to some array in a cookie (you probably want to preform this on-the-fly, with AJAX).
When you load a page with mail, check if the message id has been already checked, and if so, change the default state to checked.

I Just found the way of doing this using Java Script( no external Program ) and URL Parameters , onclick events , onload events , location.href, using global variable ,read form