I have a very simple drop down menu:
<select name="sNumR" id="sNumR" onChange="addTable()">
<option value=1>1</option>
<%For i=2 to 10
Response.write("<option value="&i&">"&i&"</option>")
Next%>
</select>
All I'm trying to do is access the selected value, whether it be the default value of 1 or otherwise. Please don't list a jQuery or javascript solution as I already know how to do that and am not concerned about that at all.
The simple: Request.Form("sNumR") doesn't work. I've tried it, many times...
What is it I'm missing? Is this even possible with vbscript/asp? I prefer a method that is simple as I believe this task should be but at this point I'm willing to take whatever I can get.
Request.Form() collection can only be accessed once data has been submitted, you do this either using client-side code to trigger a form submit or using an <input type="submit" />
This whole mechanic relies on the fact that your <select> and <input> tags are wrapped inside a <form> tag. The form has specific attributes you have to set to to access the Request.Form() collection.
action - Specifies URL you are submitting the form to, empty string will submit to the current page.
method - Either GET (to populate the Request.QueryString() collection) or POST (to populate the Request.Form() collection.
A simple HTML form example would like this;
<html>
<head>
<title>Sample Form</title>
</head>
<body>
<form action="" method="post">
<input type="submit" name="submit" value="Submit Form" />
</form>
</body>
</html>
This will do a form POST to the current page (assuming it's called example.asp)
POST /example.asp HTTP/1.1
Host: example.com
Content-Type: application/x-www-form-urlencoded
Content-Length: 20
submit=Submit%20Form
You can then insert ASP anywhere in that page to access the Request.Form() collection for example, placing this code above the HTML in example.asp
<%
Dim is_submit
'Have we submitted the form?
is_submit = (Request.Form("submit") = "Submit Form")
Response.Write "Form submitted: " & is_submit
%>
Will produce Form submitted: False before submission and Form submitted: True after submission.
Try wrapping your value attribute value with double quotes.
<option value="1">1</option>
Other than that, check your variable names.
Related
I'm working on a classic asp application ( I know, not by choice).
I have a button in my form that is supposed to do a Search based on criteria that user enters it.
To give a basic structure here's what it looks like:
<form action="IncidentMain.asp" method="post" name="frmAdd" onSubmit="return checkform( this )">
<input TYPE="image" SRC="Include/Search.gif" ALT="Search" VALUE="submit" id="IMAGE4" name="IMAGE2" onclick="javascript: document.frmAdd.txtaction.value = 'search';" >
</form>
Upon clicking on the button, as can be seen in the form action ="IncidentMain.asp", On submit I call a function, which actually gets called properly.
function checkform ( form )
{
if (form.txtIncidentNumber.value == "") {
alert( "Please Enter Incident Number" );
form.txtIncidentNumber.focus();
return false ;
}
alert("IM HERE");
return true ;
}
So it definitely gets through this function, then I have my last piece of code to actually do the search which is this:
<%
IF Request.Form("txtaction") = "search" THEN
'IT NEVER GETS HERE
'SeLECT DATA FROM SQL SERVER
End if
%>
I do not understand why it happens like that. IT basically looks like it does not want to communicate with the server, it stops short somewhere. Is there any reason why this code would not work?
EDIT:
<form method="post" action="Incident.asp" name="frmuser" onsubmit="return checkform( this )">
<input type="submit" value="Save / Submit" name="btnSubmit"
id="SaveButton" >
</form>
this code here doesn't hit the checkform(this) function but it gets to my VB code which starts like this:
<%
if Request.Form("btnSubmit") ="Save / Submit" THEN
The approach could be a lot simpler if you just want to check that a search has been submitted you could use;
Dim is_submit: is_submit = (Len(Request.Form & "") > 0)
If is_submit Then
'We have a POST form submission do something.
End If
or even;
Dim request_method: request_method = LCase(Request.ServerVariables("REQUEST_METHOD") & "")
If request_method = "post" Then
'We have a POST request (likely a form submission).
End If
Storing hidden input values just clutters the HTML and in a lot of cases is unnecessary, when you also have to update them using event handlers in the page you add an extra layer of unnecessary complexity.
However for any of this to work you have to have something to contain the search, the very simplest of forms should look something like;
<form action="IncidentMain.asp" method="post">
<input type="text" name="txtIncidentNumber" value="" />
<input type="image" name="IMAGE2" src="Include/Search.gif" alt="Search" value="submit" />
</form>
Add a hidden txtaction input field into the form.
The form is missing the hidden field "txtaction". Add the field and enter the value="search".
And remove the javascript that should have done that.
I have a web application based on bootstrap (so, using jquery), and I'm trying to convert a classic html form-based search form to an ajax search form (to avoid page reload).
In the classic form-based, the button sends the html form as post, and the action page returns a table of results below the same form.
something like:
<form action="/search" method="post">
<input type="text" name="searchterms">
<button type="button" onclick="submit();">Search!</button>
</form>
In the ajax version, there is no form, but just a text field and the button calls a dosearch() function which makes an ajax request to a back end script which return search results, which are then used in a target DIV, showing a table of results, below the search input+button.
<input type="text" name="searchterms">
<button type="button" onclick="dosearch();">Search!</button>
Both work fine, but the second way avoid the browser to "collect" previously used search terms - I guess because there's no "submit".
My users like this "previous search terms" suggestion, and I would like to add it back, if possible, in the search "ajax" form.
I also tried to create an html form anyway, which encloses the input and the button, adding this event to its tag:
onSubmit='dosearch();return false;'
(if I don't return false, the form is submitted and action page loaded), like:
<form onsubmit='dosearch();return false;'>
<input type="text" name="searchterms">
<button type="button" onclick="dosearch();">Search!</button>
</form>
but even this seems not to work: new search terms are not "remembered" and suggested typing in the field...
I thought maybe my dosearch() function could add (most recent) search terms into a session/cookie but then I would need to read those stored values and create, each time, a sort of "dropdown" list for the input field, just as browsers usually do automatically... it should be not complicated but probably overkill...
Is there any way to make browsers "remember" inserted values even without submit? If not, what workaround is best/easiest?
edit: I've just found this
input remembered without using a form
but maybe after 5 years something changed?
I just tried to change the "button" type, to a "submit", and in this way it seems to work... page is not reloaded, ajax fills the results div and my new terms are remembered...
like:
<form onsubmit='dosearch();return false;'>
<input type="text" name="searchterms">
<button type="submit" >Search!</button>
</form>
it seems that if the "submit" is triggered through a "submit" button (even if it return false) the browsers stores input field values...
you need to do with ajax
<form onsubmit='dosearch();return false;'>
<input type="text" name="searchterms" id="searchTerm">
<button type="button" onclick="dosearch();">Search!</button>
<script type="text/javascript">
function dosearch(){
val = $("#searchTerm").val();
$.ajax({
url: "LoadProduct.php?val ="+val,
type: "GET",
processData: false,
contentType: false,
}).done(function(respond){
$("#LoadProductTd"+no).html(respond);
$(".chzn-select").chosen(); $(".chzn-select-deselect").chosen({allow_single_deselect:true});
});
}
</script>
so you can create LoadProduct.php file and in file you will get your search term n $_GET['val']
so you can use this for your query
I am trying to implement something like this.
http://app.maqetta.org/mixloginstatic/LoginWindow.html
I want the login page to load but if you click the signup button then an ajax will replace the login form with the signup form.
I have got this to work using this code
dojo.xhrGet({
// The URL of the request
url: "'.$url.'",
// The success callback with result from server
load: function(newContent) {
dojo.byId("'.$contentNode.'").innerHTML = newContent;
},
// The error handler
error: function() {
// Do nothing -- keep old content there
}
});'
the only problem is the new form just loads up as a normal form, not a dojo form. I have tried to return some script with the phaser but it doesnt do anything.
<div id="loginBox"><div class="instructionBox">Please enter your details below and click <a><strong>signup</strong>
</a> to have an activation email sent to you.</div>
<form enctype="application/x-www-form-urlencoded" class="site-form login-form" action="/user/signup" method="post"><div>
<dt id="emailaddress-label"><label for="emailaddress" class="required">Email address</label></dt>
<dd>
<input 0="Errors" id="emailaddress" name="emailaddress" value="" type="text"></dd>
<dt id="password-label"><label for="password" class="required">Password</label></dt>
<dd>
<input 0="Errors" id="password" name="password" value="" type="password"></dd>
<dt id="captcha-input-label"><label for="captcha-input" class="required">Captcha Code</label></dt>
<dd id="captcha-element">
<img width="200" height="50" alt="" src="/captcha/d7849e6f0b95cad032db35e1a853c8f6.png">
<input type="hidden" name="captcha[id]" value="d7849e6f0b95cad032db35e1a853c8f6" id="captcha-id">
<input type="text" name="captcha[input]" id="captcha-input" value="">
<p class="description">Enter the characters shown into the field.</p></dd>
<dt id="submitButton-label"> </dt><dd id="submitButton-element">
<input id="submitButton" name="submitButton" value="Signup" type="submit"></dd>
<dt id="cancelButton-label"> </dt><dd id="cancelButton-element">
<button name="cancelButton" id="cancelButton" type="button">Cancel</button></dd>
</div></form>
<script type="text/javascript">
$(document).ready(function() {
var widget = dijit.byId("signup");
if (widget) {
widget.destroyRecursive(true);
}
dojo.parser.instantiate([dojo.byId("loginBox")]);
dojo.parser.parse(dojo.byId("loginBox"));
});
</script></div>
any advice on how i can get this to load as a dojo form. by the way i am using Zend_Dojo_Form, if i run the code directly then everything works find but through ajax it doesnt work. thanks.
update
I have discovered that if I load the form in my action and run the __toString() on it it works when i load the form from ajax. It must do preparation in __toString()
Firstly; You need to run the dojo parser on html, for it to accept the data-dojo-type (fka dojoType) attributes, like so:
dojo.parser.parse( dojo.byId("'.$contentNode.'") )
This will of course only instantiate dijits where the dojo type is set to something, for instance (for html5 1.7+ syntax) <form data-dojo-type="dijit.form.Form" action="index.php"> ... <button type="submit" data-dojo-type="dijit.form.Button">Send</button> ... </form>.
So you need to change the ajax contents which is set to innerHTML, so that the parser reckognizes the form of the type dijit.form.Form. That said, I urge people into using a complete set of dijit.form.* Elements as input fields.
In regards to:
$(document).ready(function() {});
This function will never get called. The document, youre adding innerHTML to, was ready perhaps a long time a go.
About Zend in this issue:
Youre most likely rendering the above output form from a Zend_ Dojo type form. If the renderer is set as programmatic, you will see above html a script containing a registry for ID=>dojoType mappings. The behavior when inserting <script> as an innerHTML attribute value, the script is not run under most circumstances (!).
You should try something similar to this pseudo for your form controller:
if request is ajax dojoHelper set layout declarative
else dojoHelper set layout programmatic
Although I'm getting correct options for an ajax-generated drop-down (based on the selection of another), I'm not seeing the value post to the PHP script. However, I see all the values from the normal HTML elements (not generated by ajax). What am I missing?
1. HTML produced by my scr_ajax.php script. - OK
$options is produced by the SQL query and the resulting selections are accurate. This is nearly identical to drop_down_1.).
<td>Drop Down 2</td>
<td></td>
<td>
<select name="drop_down_2" id="drop_down_2" value="" style="width:100%">
<option></option>
'.$options.'
</select>
</td>';
2. Where the ajax-generated HTML data goes.. - OK
Properly receives AJAX-generated form element above for the 2nd drop-down.):
...
<tr id="ajaxContent">
</tr>
...
3. Regular 'ol submit button.. - Not OK
drop_down_1 can be captured in $_POST data, but drop_down_2 cannot. I know I'm missing something here..)
<input type="submit" value="Submit Request" />
better start using jquery for everyday tasks.
http://api.jquery.com/jQuery.ajax/
[UPDATE: 11-25-2012]
I'm now able to combine the HTML and AJAX-generated post results by using the jQuery submit listener and populating the hidden field. However, this seems like more of a special technique/workaround as opposed to a more direct approach.
1st, I added the hidden input element:
<input type="hidden" name="drop_down_2" id="drop_down_2" value="" />
2nd, I added the jQuery submit listener:
<script type="text/javascript">
$(document).ready(function(){
$("#form_name").submit(function() {
var field = "drop_down_2";
var param = document.getElementById(field).options[document.getElementById(field).selectedIndex].value;
document.forms[0].elements[field].value = param;
});
});
</script>
[UPDATE: 12-01-2012]
It sounds like the proper solution involves mastery of the serialize function. I will post an update upon verification.
I have a drop down list and a form with a few textboxes. I would like to populate this form with details of selected item in the drop down list.
I'm doing this in java MVC app (or wannabe) and I have in my jsp page something like this:
<select name="item">
<c:forEach items="${persons}" var="selectedPerson">
<c:set var="person" value="${selectedPerson}" />
<option value="$selectedPerson.id">${selectedPerson.LastName}</option>
</c:forEach>
</select>
Persons is a list of the Person class.
I wonder is it possible to use the variable 'person' directly to fill the form, for example:
<textarea name="name" rows="1" cols="34" >
${selectedPerson.Name}
</textarea>
so that the rest of the form updates when the selectedPerson is changed?
I know how to do this within c#, but I don't have experience with java technologies.
Is it necessary to submit the form to servlet to do this, or it can be done on the client, since I have all my data in the persons list, from the moment of populating the drop down list?
The ${} syntax is JSP syntax, which will only be parsed and run once on the server to generate the HTML, and then sent down the wire as HTML. The changes to the select list then just happen in the client browser: the server doesn't know anything about them.
What you want to do is register a javascript listener on the select box. You should look into using a library ideally to help you do this. JQuery is a very popular solution and is worth reading up on if you're going to be doing this type of development.
If you end up using JQuery, you'll want to do something like the following
<select id="item" name="item">
<c:forEach items="${persons}" var="selectedPerson">
<c:set var="person" value="${selectedPerson}" />
<option value="$selectedPerson.id">${selectedPerson.LastName}</option>
</c:forEach>
</select>
<input name="lastName" id="lastName" type="text"/>
<script type="text/javascript">
$(function() {
$("#item").change(function() {
$("#lastName").val($("option:selected", this).text());
});
});
</script>
This will make more sense once you've read a basic JQuery tutorial, but basically what it does is that each time the select list changes value, it gets the selected option and sets it's content to the lastName input field. Hope this helps.