JQuery :: How To Post Back A Variable
Nov 22, 2010
I am trying to write code to allow a person select one photo to be their base image or Front cover image on a photo album. I am using jquery .post to get the form check box values which are the image file names and then use post to throw them to a php file and then update the database.
Now thats cool so far and that part works. Now the problem is that I need the main photo album picture to be replaced once the .post if completed or succeeded. I need to refresh the main image. Right now the only way to do it is to hit the refresh button on your web browser. Yet I want to do this without refreshing the page.
The Image displayed already is in a image html tag with a id named user_main I was thinking is it possible for .post to pass back to javascript a variable that has the image source and is there any way to update that image tag easily like where it says src="path to image" is located.
Would like to know the best way to refresh the image without having to refresh the page.
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Sep 2, 2011
I am trying to create dynamic content using append and appendTo functions. It seems to work fine and I can see the new elements on the fly using a Button to execute a customized function based on this jquery methods. something like this:
$('<div id="page-contents2"></div>')
$('<form class="cmxform" id="form1" method="get" action=""></form>')
.prepend('<div>TITLE HERE</div>')
[code]....
the problem is that when i refresh the page the new content disappear of the DOM.
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May 14, 2009
I've been trying to figure out how to echo back error messages from a PHP edit page, for example. Say if I am editing a grid and sending that info with json to a php page to update a database, if there is a validation or other problem, how do I echo that back on the page with the jquery? Do I put that in a div container too for best practice?
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Jan 31, 2011
I have created an entry form that I display in a modal dialog. I have two buttons on the form: "Add and close", and "Add and allow me to add another". However the only time my modal form will post back to the server is after the form has been closed. I want to do the following: The user opens the form in a modal dialog. The user enters data, and clicks the "Add and allow me to add another" button. The page sends the user input to the server, which adds the input to a database and updates a datagrid on the page. This updated datagrid is visible behind the modal form, so the user can see it happening in the background The form clears all input fields and the user goes again. Any code I write that calls the server (button click events, ajax calls, etc) are ignored, unless the modal form has been closed.
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Dec 5, 2011
I have adrop-downelement on the page. On the change event I am appending two labels to a text box. The problem is I am able to see the newly added elements on the page while debugging it. but as soon as thepost backoccurs the added elements seems to bedisappearingfrom the page.
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Aug 23, 2010
I show a form in the modal pop up which has several drop down lists in it. The problem is that if i select nething from the drop down list then my selected index change event fires and my form gets refresh..how to overcome this problem??
Can we use modal pop up wherein there are multiple post backs?? I also tried adding update panels etc.
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May 5, 2011
I have many tags. I want click each tag, then post/get the tag's value to another page. In another page, received the values and make a mysql query. Then return the resalt data to the first page(do not make an iframe).
[Code]...
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Oct 26, 2011
In this function, I'm trying to set the value of isValid with the results of $.post:
[Code]...
Unfortunately, isValid never changes from the initial "true". I know that $.post is working correctly because #msg_code reflects the corresponding message.
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Jul 1, 2011
I want to bind a hook to objects member variable change event i.e. lets say I have object:
var obj { var1 : 1,
var2 : 2,
var3 : 3
};
I want to call "Magical" function like this:
onVariableChange(obj, "var1", function(obj, varname, old, new) {
alert("Variable " + varname + " changed from " + old + " to " + new);});
And after this function call every time obj.var1 is set to some value have my callback function called
I found something in internet: [URL]. Its cool but:
-It is changing Object-s prototype
-It is not working under IE 5, 6, 7, 8, 9, 10, 11, 12....
I've changed it a little bit and instead of adding to Object class prototype I'm adding it as member to any object which needs this hook. But IE still doesn't work. Is there any known cross-browser solution for this? I remember there was a jQuery upcoming project which would allow users to bind object to form and by changing one other will change automatically I wonder whats that project name and how they change input value when object member value changed.
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Oct 22, 2009
I'm having some problem with return value for a function. I'm trying to access google blogger's API to display blog entries on my site. I'm doing this through JQuery and requesting a JSON response. Everything seems to work ok, but I want to access the link for the blog entry. This is a subset of the "entry" object.
It's structured like this:
Entry:
title,
content,
link:
rel,
type,
href,
rel,
type,
href,
I want to get the link where the "link.rel == "self". To do this I have to loop through the link object (5 times). The loop and conditional statement works correctly, but I can't get the variable inside this loop back to my original function.
I have this code:
$.each(data.feed.entry, function(i, entry){
$.each(entry.link, function(j, link){
if(link.rel == "self"){
var postlink = link.href;
alert("link : " + postlink);
return postlink;
}});
alert(postlink);
});
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Sep 21, 2009
How do I pass a variable as a key in a key/value pair in Ajax?
[Code]...
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Oct 23, 2010
I can't seem to get a variable declared from within a post callback, so that I could manipulate my script accordingly. I have delete.php, that deletes an id from a mysql db. If it fails, I want the script to stop and display the error. The .php script echos an "ok" if everything went fine, if not - it echos the error.var abort_error; // set the error variable
$.get("delete.php", { delete: $(this).parent().parent().parent().attr('id') },
function(data){
if(data != 'ok') {
[code]...
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Feb 3, 2009
I am using a jQuery AutoComplete plugin which fills in text as you type. I need to find a way when the page is submitted (submit.php) to determine if the user choose a company from the list, or if they typed in their own unique company.
If an option is selected, can i have jQuery post an extra $_POST variable like "new" or "existing" so I can pick it up on the submit.php page? Or when an option is selected, can I have .js write a hidden tag which contains the variable "existing"?
[URL]
index.php
Code HTML4Strict:
<script type="text/javascript">
function findValue(li) {
if( li == null ) return alert("No match!");
[Code].....
The end goal here is to post a variable on the next page if the user selected an option from the autocomplete list.
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Mar 14, 2011
I have a web service that returns an array.
Code is below: Data variable comes back as blank. I was wonder is that because the method returns an object or am I doing something wrong on my end.
$.ajax({
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May 4, 2010
<script type="text/javascript" src="jquery-1.4.2.min.js"></script>
<script type="text/javascript">
var global_var = false;
function test_func() {
$.post("server.php", function(data){
alert("Data Loaded: " + data);
[Code]...
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Nov 30, 2010
So I'm currently working on a ASP.NET Webforms site and I've run in to a small problem. On my .cs file I have the following Webmethod
[WebMethod]
public static string IsJobEditable(int jobid){
try{
string isEditable = "false";
JobsBLL jbl = new JobsBLL();
int jobStatusId = jbl.GetJobStatusId(jobid);
//If the jobs is either waiting or being edited it is
okay to edit it
if(jobStatusId ==
Convert.ToInt32(ConstantsUtil.JobStatus.Waiting) || jobStatusId ==
Convert.ToInt32(ConstantsUtil.JobStatus.Edit)){
isEditable = "true";
}return isEditable;
}catch (Exception ex){
throw ex;
}}
This function in this case will ALWAYS return TRUE as a string. On Aspx page I have the following
$(function () {
$.ajax({
type: "POST",
url: "Coordination.aspx/IsJobEditable",
data: "{jobid:" + jobid + "}",
contentType: "application/json; charset=utf-8",
dataType: "text",
success: function (result) {
alert(result);
//This is written out in the alert {"d":"true"}
I want this in a variable as a string so I can do a check on it before I do some other actions. The format is not a String so I cannot split on it to retrieve the "true" part.
},
error: function (err, result) { alert(err); }
});});
As you can see in the comments the value I get back in the Callback method is in to me a weird format. The type is unknown and I need this value to be able to proceed with my entire method surrounding the small portion of the Javascript. Where to access the result variable / data as a var or anything else that will let me put it into a var (as a string).
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Jun 9, 2010
I have a form, I have successfully passed the username from jquery
$.post("http://www.photographycourses.co.uk/cpl/cplfunctions.php?action=checkUsername", { username: username} );
to php script. The php script checks the database to see if the username exists:
if ($num >=1){
echo= 0;
}else{
echo= 1;}
How do I pass the variable (1/0) back to the javascript file?
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Jan 29, 2011
When an image is clicked, I need to generate a variable which is then passed to a .php page. The variable is simply a 3-digit number. I was thinking of something like this:
Code:
<a href="javascript:document.myform.submit()">111<img src="/images/covers/409-pg-01_sm.png" alt="" width="145"></a>
Which I found by googling it, but I don't know what to substitute for the document.myform.submit in my own code. I also don't know how to use the variable.
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Jun 10, 2009
Is it possible to make
function post(test1,test2,test3,test4){
$.post('test.php', {
test1: test3,
test2: test4
}, function() {
lert('yes');
});
}
the test1 in red to be what is comming from the function?
[Code]....
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Aug 15, 2011
I am trying to create a button on a webpage with HTML/JS that upon clicking will 1) pass a single variable into my python script and 2) run the script. The single variable to be passes is already a declarative variable in the html page.
var userid=urlvar['userID'];
I have an instance implemented using cgi-bin that takes some user information from the form (detailed below A) and calls a python script (see below B) to return a new page displaying that information. I am looking for a way to pass the value from var userid as the "form.value" and then use that value for some specific processing objectives already designed (I have no need to return any information to the webpage).
A---In the html page:
<form method="POST" action=http://ip_address/cgi-bin/test_doneButton.py>
<p>Your first name: <input type="text" name ="firstname">
<p>Click here to submit form: <input type="submit" value="Yeah!">
[code].....
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Aug 12, 2009
In my application i am using Ajax post like:
The Form id as returned from the Controller side is saved in the variable getformid correctly, But it is not reflected in the savefield ajax post..And it is saving as 0 only even it alerts as the returned Form id..
In addition i am giving here the Code inmy Controller for saveForm:
And my Model saveForms is like:
And my save_form.ctp in my views folder is like:
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Jun 9, 2010
I have my ajax create a form which sends its data to a PHP script.
But when i check the PHP script it only gets the $_POST['user'] the $_POST['message'] doesn't come through.
Why might this be ?
My AJAX:
Code:
Focus on:
Now the next part recives it and submits:
Code:
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Jul 3, 2010
<fieldset class="submit" style="padding-left: 200px;">
<?php if ($site_exist >= 1){
echo "<input type="submit" name="submit" value="Update">";
[code]....
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Aug 21, 2009
I wonder if i can make the variable data which is [data] in jQuery.post( url, [data], [callback], [type] ) dynamic. for instance, this is the form i want to send,
PHP Code:
<form action="send_xml.php" method="post" enctype="multipart/form-data" id="form_send"><input type="checkbox" id="var_1" class="checkbox"/><input type="checkbox" id="var_2" class="checkbox"/></form>
[Code]...
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Nov 16, 2011
My code is this:
Code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html lang="EN" dir="ltr" xmlns="http://www.w3.org/1999/xhtml">
<head>
[Code]...
In a few words it creates a button which when it is clicked it launches the add_text script. Add text script creates a text element for a form and puts a random value for the textbox. Textbox also takes a name which is of array type name="txt[]". Also form has the post method.
When I press e.g. 4 times the add text field button 4 text boxes are added. But when I click the submit button I get a result of 1 instead of 4 when the print count($txt) is executed. Copy paste the code to see the problem.
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Aug 17, 2010
I want to run an external function outside the post.
This is what I have currently.
On success of the post I want to run the setGrandTotal(); function which will do some calculating for me.
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