Ajax :: How To Populate Select List
Aug 15, 2010
I am using Javascript & PHP to populate a select list. The Ajax is working perfectly as I have tested it. However, as you can see from the below code, I have a button which adds more rows (which includes 2 select lists and file input) to a table.
When I click Add Row, the row is added perfectly and both select boxes along with the file field are shown as expected. The problem occurs when I select a value from the "room_name[]" box - there are no values returned inside the "album_title[]" select box. It doesn't seem to be triggering the onChange event.
code JavaScript:
function addRow(tableID) {
var table = document.getElementById(tableID);
[code]...
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Mar 7, 2011
I have 3 ASP list boxes. I would like to populate the second list box based on the selection in the first list box and based on the selection in the second list box, populate the third. I would like to do this using AJAX. How can I do it? Can someone please give me the code snippet as I am a complete noob when it comes to AJAX and I kinda am running outta time to finish implementing it. Additionally, should I use ASP boxes or HTML <select> tag?
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May 21, 2009
I have two select lists, the first one has three options in it, What I need to have happen is once a option is selected in the first drop down, the second drop down will be populated with the remaining two options.
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Jan 16, 2011
I have a product select page that is really slow to use because 6 dropdowns must be populated and the page reloads after selecting each box, to get the options for the next box.I want to speed it up as follows:
1) User selects one of 50 products from a dropdown list.
2) Page reloads, and all the possible options for the remaining 5 dropdown boxes are now populated (ie. list options all stored client side)
3) User can freely input the remaining 5 dropdowns without the page reloading.
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Feb 25, 2010
I have a select field. I must fill with options taken from a mysql table.Here is some little php code I have done using codeigniter framework
$idcateg = trim($this->input->post('idcategory'));
$array1 = array(
'result' => $idcateg
);
echo json_encode($array1);
Now, the jQuery call...
$.post("<?=base_url()?>index.php/rubro/list_ajax/", {
'idcategory' : idc },
function(data){
[code]....
The code works fine. When I call the post, I get the categoryid as a result.Now, I should modify the code above, so I can do:post the ajax call sending the category id. this is done get subcategories for this category, and build the array * json_encode the array and echo * get results back in jQuery ajax call, decode and build the < select > field *The array should be built with each element having a sub-array with id and name, right?
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Aug 18, 2010
I'm having problems with a Javascript 'Lookup' function.
Basically, I have a select menu 'Customer' which triggers a 3 JS functions, to populate 2 extra select menus.
Using IE Developer Tools, during debugging, I get this error: Expected ';' Error
This relates to either: eval(ajax_CustContact[index].response); OR eval(ajax_CostCentreContact[index].response); (it's a bit random, as sometimes it works, sometimes it doesn't)
I have tried changing the 'custid' to 'custname' to check whether it was an integer causing the problem, but had the same problem.
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Sep 29, 2007
I have several lists each of several hundred selectable items. I send
all lists to the client along with the javascript. When the user types
the first letter of the item in a text box, I know which list to
present- it is likely the user will wish to view several of the lists
concurrently (I am not concerned at the extra load time of a few
thousand items sent via javascript). However, I am trying to do
everything client side- (even if I use ajax to call the list from the
server, there is delay at the client side as the listbox is populated
with appropriate items) - can anyone think of a manner of presenting a
long list dynamically, based on the first letter typed, client side
and with the absolute minimum of delay? (These items then need to be
selectable)
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Mar 27, 2009
I know that this is very basic to most of you JS Guru's out there, but I am stumped. I have found dozens of tuts on this, but can't seem to find a VERY simple basic version of it. This is what I want, actually my client wants. I want to have a select list that gives the options of countries. Then upon selection this changes the drop down list of the states/provinces listed. So when I click on Europe it shows the different sections of Europe, and US it shows the states (I'm sorry I don't know what Europe calls their equivalent of a state), etc.
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Sep 13, 2004
I have 2 dropdown list in my html. Is possible for me to populate the option values in the second dropdown list depend on what I select in the first one?
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Nov 28, 2011
I am facing the above problem for a chatroom app that I am making. People will enter and exit the room any time they want, so i need a member list that updates itself to reflect this on the screen of all users that are in the chatroom. What i have thought of, is to have JS call a PHP function on specific intervals, and that PHP function will retrieve user data from a database and pass it to JS to display on the list. Is this method advisable? Are there any more suitable ways of doing this? I am thinking of applying the same theory for displaying and retrieving chat messages, but i get the feeling that something's missing for this, or maybe this method is not right for displaying messages.
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Oct 7, 2010
I need to populate a drop down list from sql server via jquery.I'm unfortunately unable to use any server-side type coding
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Aug 14, 2011
I want to use arrays to populate an HTML list. I can populate the main list items but I can't seem to get the sub list items to work.
<HTML>
<Body>
<ul>
<script>
var pages = ["page1", "page2","page3"];
var subPages = ["sub1","sub2"];
for(var i = 0; i < pages.length; i++){
var page = pages[i];
document.write('<li>' + page + '</li>');
if (page == "page2"){
document.write('<ul>');
for(var i = 0; i < subPages.length; i++){
var subPage = subPages[i];
document.write('<li>' + subPage + '</li>');
} document.write('</ul'>);
}}
</script>
</ul>
</body>
</HTML>
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May 1, 2009
how to create a somewhat simple form. The form will have text fields for 'Name', 'Phone', etc. What I want is to have a drop down list, which has different insurances to choose from (i.e. Medical Insurance, Dental Insurance, Senior products), and say when I choose 'Senior Products', new text fields pop up within the form to add their 'Address' and click a checkbox that states they authorize to be contacted. These new fields aren't visible unless they choose 'Senior Products' from the drop down list.
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Oct 1, 2010
Have a WAMP setup with Apache, PHP and Mysql service and I�m working on a HTML form which will have two drop-down controls where information is extracted from two tables in my DB.The first drop-down list called (name="sel_ControlArea") will decide what information the second drop-down list will have.So far I have managed to populate them when the page is loaded using PHP but run into problem when I make a change on the first drop-down list.Question one: What is the best/correct way to solve this problem?Is it to load all information into PHP arrays and then translate these to Javascript arrays, or should I go for AJAX, or XML or are there any other better ways ?I have tried to solve this using the first method, put data in a PHP array but run into problem with this data not properly loaded.This is first time for me to pose a question so please let me know if I have left out some important information or if I should describe this problem in a different way.
<table class="exemption" border="0" cellpadding="2"
cellspacing="5" bgcolor="#eeeeee">
<th colspan="2" align="center">Security Exemption Request</th>
[code]....
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Feb 6, 2009
I'm looking for a tutorial type of help on using JQuery to create/populate a selection list. I've looked at their site (and searched on their site/google) and although there is tons of stuff there, I can't find what I need.
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Jul 5, 2011
The following PHP code populates a dropdown list of Projects. I would like to be able to click on a Project Name in the list and have its corresponding list of Characters appear beside it. How can I tie jquery into this as it's running? All the jquery examples I see are for hard coded HTML data instead of a PHP loop grabbing from a database.
Code:
//creates the Project dropdown list
while ($proj = mysql_fetch_array($project)){
$id_proj = $proj['projid'];
$name_proj = htmlspecialchars($proj['projectName']);
[Code]....
I don't care if it's a clickable list of anchors instead of a dropdown. Also, I don't care whether people have javascript enabled as this is for my personal use.
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Jan 26, 2009
I'm trying to get a select box to automaticly populate the year ranging from 2008 to the current year + two years.Below I've put the code I've got so far which populates it with the current year plus two years so for example at the moment it shows 2009, 2010 & 2011. Next year it would show 2010, 2011, 2012 but I need it to start at 2008 so this year it would show 2008, 2009, 2011 & 2012 and next year 2008, 2009, 2011 & 2012.
Code:
<script type="text/javascript">
var year = new Date();
var nextYear = year.getFullYear()+1;
var nextYear2 = year.getFullYear()+2;
[code]....
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Dec 3, 2009
I have set up my website quite some time ago that has served its purpose very well, however I will now be adding an order form functionality. So far, by reading books and traversing forums, I have been able to develop a page where the user
1.Enters data into the required fields, that is then submitted to a MYSQL database via PHP,
2.Can retrieve orders that are stored in the database,
3.Delete orders that are stored in the database.
I have wamp installed on my computer as the webserver. I have also incorporated two drop down lists that both retrieve their values from tables within the database. The first drop down list retrieves the Australian States that I have stored in a table, and once the submit button is pressed, it stores the State that is selected to a separate table. This drop down list functions as it should. An extract from "From Place an order.php"
<?php
$dbcnx = @mysql_connect('localhost', 'root', 'tingling');
if (!$dbcnx) {
exit('<p>Unable to connect to the ' .
'database server at this time.</p>');
} .....
The second drop down list retrieves product names from a table that contains products and their prices. What I would like to happen, is that when the product is selected from this drop down list, a text box is automatically filled with its corresponding price. I had this drop down list working as per the "States" drop down list, but could not get it to auto populate the text field. I got some assistance from a friend and was able to get the text box to auto populate with its corresponding price, however when the page was submitted to the database, the "id" number of the product name from the drop down list was stored, and not the product name.
<select name="productSelection" onchange = "getProductDetails(this)">
<option selected value="1product">Select Product</option>
<?php
$products1 = @mysql_query('SELECT * FROM products');
if (!$products1) {
exit('<p>Unable to obtain author list from the database.</p>'); .....
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Apr 19, 2009
how i would poppulate a select box with an ajax call.
Would anyone have a super simple function or script that will populate a select box without using a framework of any sort ?
All i need is for it to extract pull a list from my server
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Jun 9, 2009
I have a page that displays a list of people playing in a tournament. I need to be able to generate a Leaderboard based on which players are manually selected by the admin. Next to each person there is a drop-down list. An admin can go in and select a "slot" that a player should be in on the leader board from 1 to 8, or leave it blank if none. What I need to figure out how to do is the following, when a change event happens on a drop-down list, and say the value 5 is selected, I need to check to make sure that 5 is not already selected in one of the other players drop-down lists, in other words, that the 5th leaderboard slot is not already full. if it is, display an error message and make them change that one first. how to do that with jQuery? I'm thinking it will have something to do with the each() function, but not sure exactly how the logic should work.
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Jan 26, 2010
I have a form where a user may select a box from above which will query the database and autofill in the fields. This works properly for all of my input text fields but I have a select box where a user selects their state that I am unable to get to properly populate.
The select box is populated on page load in the following format....
<select id="state" name="state">
<option value="1">ALABAMA</option>
<option value="2">ALASKA</option>
</select>
[Code]....
Everything populates correctly except where I try to set the val on the state select field. It does not change at all. I need it to display the statename with the value of the state (number).
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Oct 12, 2010
I would like to have a jsp page with a form consisting of several inputs and selects. When page loads for the first time, there is only one select (with values taken from database), but after clicking on link "add", the subsequent selects are added (using JavaScript and DOM). It seems to be pretty easy task, but I'm not sure how to populate the newly created select with data.
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Jun 16, 2010
I am populating a number of Select boxes on the server-side with a large number of options. I'd like to get the response size down without taxing the client browser too much. What do you think is the most efficient way to approach this problem?
Here are some considerations: The option text/values do not change very often, but could potentially change in the future. The page that holds the select boxes should never be cached, there are other aspects of the page that need to remain fresh. Firebug with YSlow is saying that the primed cache size of the page is 300Kb with all the select dropdowns and options, if I remove the options, the primed cache size of the page is 80Kb. I am considering breaking out the text/value pairs for the select boxes into a separate file that is cache-able calling it "valueTextPairs.js" and referencing it with a query string and some sort of server-generated MD5 hash of the data, so that if any of the values change, the client's cached version will be replaced by the latest version. Like so:[URL]...
Provided I do this, I anticipate that the primed cache size of the page will be reduced down to 80Kb (which I like) -- however, before I take the plunge, I am curious what you all think the performance effect will be?
I know the number of bytes on the wire will be reduced, but will this put a lot of additional pressure on the client's browser because I'd need to traverse the name/value pairs and add the options to the select boxes dynamically on the client end? If it seems reasonable to do this, what jQuery approach would be the most efficient? $('#selectId').html(options) with options = one big string? Adding each child option to the select in a loop? Something else?
Some client end folks are using IE6 so I am trying to tax the browser as little as possible, while also reducing the size of each request, trying to find a happy medium..
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Jan 14, 2009
Is there some example js that shows how to populate a text field on a form, based upon what option is chosen in a select form field? The options can be hardcoded and it would be great to also have a default if js is off on the client side.code...
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Apr 3, 2011
I have a page that runs a lot of calculations.The math is computed on the fly using java scriptwhen all the calcs are in, prior to form submission the user needs to evaluate which numbers they prefer, and from there, once they select them, the form, based on those choices, will perform one last calclets say we have 3 result fields
r1 = 2000
r2 = 3000
r3 = 4000
what i want to do is have a select field be able to display those values at the bottom of the page;for example
<select name="s1">
<option value=[field contents of r1 above]>[field contents of r1 above]</option>
<option value=[field contents of r2 above]>[field contents of r2 above]</option>
[code]....
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Aug 29, 2011
I want to make a popup helps the user select a value for an input field in a html form.
For example, if the field is for a customer code - the user can either type in the customer code directly, or use the popup to search on available customer codes using various criteria and finally select the customer code he or she wants to use, and have that customer code populate back into the original input field.
I have been looking around the various components in jquery but can't quite see how to do this.
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