Populating An HTML Select From A JavaScript Function
Dec 12, 2005
How would I go about simply populating an HTML select statement from a JavaScript function. You see I have several HTML select statements on one page which are identical (sometimes repeated multiple times) so I wanted to try and cut down on these multiple instances and just have the values hard coded once (in a JavaScript function perhaps) and then called whenever they are needed. Could anyone advice me please, would this be easy to do?
I have the following HTML select statement hard coded:
I'm working on some code and am running into brick walls. I'm trying to write out Javascript with Javascript and I've read the clj Meta FAQ and didn't see the answer, read many similar posts (with no luck though), and searched through the IRT.ORG Faqs (www.irt.org/script/script.htm).
The Javascript is designed to open an popup window and then inside that window call another script which will resize that window. There may be another way around this but the reason I tried this approach initially was that I wanted to call the onload handler in the popup window to resize the image only after the image had completely loaded. I've had some code in the primary Javascript file (showimage.js) before that works if the image has been cached but on the first load, it doesn't resize properly which tells me it is probably because it is trying to resize the window based on the image size but it isn't completely known at that point. So I removed that code and tried placing the resizing code in the second Javascript file (resizewindow.js). BTW I've tried other code to open a popup image and automatically size it ie Q1443 at irt.org but that doesn't do exactly what we need.
Even if there is another way to do this with one file, I still want to figure out why this isn't working in case I run into it in the future.
I thought what I would need to do to use document.writeln to write Javascript would be to escape any special characters and to break apart the script tag ie
document.writeln('</SCRIPT>');
would become
document.writeln('</SCR' + 'IPT>');
I have a HTML page and 2 Javascript files. All files are in the same directory and have permissions set correctly.
Here are the 3 files (keep in mind wordwrap has jacked up the formatting):
index.html ---------- <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>Test</title> <SCRIPT type="text/javascript" LANGUAGE="JavaScript1.1" SRC="showimage.js"> </SCRIPT> </head>
<body> Click the house<BR> <A ONCLICK="newWindow1('house1.jpg','Nice House')"><IMG SRC="house1thumb.jpg"></A> </body> </html>
showimage.js ------------ function newWindow1(pic,sitename) {
resizewindow.js --------------- function resizewindow() { // Do resizing here. // Right now this isn't being executed alert("resizing window"); }
Can anyone provide some pointers as to why this javascript is failing? I'm using IE6 on Win2k and when I click on the image to open the popup window, it does open the window but it is white with no content and the system immediately goes from about 4% CPU usage to 100% and consistently stays there until I kill that window with the task manager.
I want fill a select list with the first list on page load, then depending on which option is chosen, fill another select list with the appropriate list. I'd prefer using only javascript!
I am populating a select box from ajax .. it is loading fine ..But when i submit the form then the value of select box is never passed .. As if there is no select filed on the form ..
Code:
<SCRIPT> function content() { var retval="abc";[code].....
So when I submit the form .. The county field is never passed on to next page .
I have a site that can consist of one or several (up to 20) select boxes that all list the same data (TeamID, Team). There are about 8000 list items to be loaded in the select box.This data is fetched in a seperate file using php+sql and with javascript and ajax, I populate the boxes. Note that these are populated on page load and not based on a specific action/change. The script looks for select boxes that have the class="ajax-team-list". Well, the above works. My drop-downs are being populated. However, it takes an insanely amount of time (30 seconds in IE). Skipping the javascript and only using php to get the same output takes 2-4 seconds, so something must really be messed up in the code, or?Any ideas, suggestions or thoughts about an alternative solution? For whatever reason, Firefox loads the above code in 2-4 seconds, Chrome takes 12 seconds.. and like I mentioned, IE takes 30 seconds.
I am trying to populate inputs on a form from a select drop down list (with date being pulled from a mysql database). This is to allow for any changes that need to be possibly made.
Is this even possible? I've tried doing some internet research, and the books I picked up from the library don't seem to go into this at all, so I'm not even sure that what I want to do is possible. The only thing I can really seem to think is that i need to use onChange. But outside of that, i'm lost.
I originally posted this question in the PHP forum and received advice to try here, they said it might be possible using JS and AJAX.I have limited experience with JS and none at all with AJAX.I have an HTML form in which I have a Select field, currently with about 100 options. The form creates an HTML email using formmail.Dependent on the option taken I get other details, eg address, email, telephone, etc.This is begging to be done via a database and PHP.I do not know if this is possible, but could I open the database, MYSQL, and take all the records into an array, open the HTML form and use one of the fields of the array to create the options list, when an option is selected use the other fields in the array to fill in the address, email, etc fields on the form and then use those values as variables to pass to formmail, which is a PHP program.
I thought that if this was possible I would use PHP to populate the array and then get it to call the HTML form where I could hopefully use the array to help complete some of the fields using SELECT.I would like to know if my thoughts are going in the right direction or if I need to go down another track.
I am having an issue getting my select boxes working in IE. My current situation is that I have 2 select boxes, 1 for Styles and another for Substyles. Not all Styles have a Substyle, but each Style has a different Substyle, so when should happen is when you select a Style AJAX go and gets all of the matching Substyes for that Style.This actually works in Firefox, Google Chrome, Opera and so on, but does not work in IE.Just to clarify, all of my PHP is working 100% and as far as I am aware my HTML is also fine, I have done some checks with the JavaScript and im 80% sure that the problem lies on line 47.
With IE 8 when a select element is created and populated the select element appears as if it doesn't contain any options until it is clicked. Once clicked the select element then resizes and the data is displayed. I ran across an article mentioning this issue could be resolved by adding an extra line of code that applies a "blank" style to the element but unfortunately the issue still persists. I'm currently using jquery 1.4.2 and the code I use to populate a select element is:
I just know basic HTML & CSS. However, was working on a project that would require a little javascript. It's for a travel agency and the idea behind it is there is a "booking page" that is basically an html form with a bunch of hidden values (like the destination airport code, the origin airport code, etc). The only thing a potential customer has to do is use a selection list and pick the dates available for that travel sale and hti submit. However, there's a new promotion coming out next week where if you book to travel for certain dates, you can use a promo code to save $100 on your vacation. What I would like to know is if there is anyway I can use javascript so that if a person selects the promotional dates, it auto-populates the promotional code text field.
I have a function which, using AJAX (No problem here, definitely returns data), returns a list of <OPTION> elements to the client. Using Javascript I am trying to re-populate a <SELECT> element with its children.
This process works perfectly for Firefox but with IE6 the <SELECT> list stays blank!!
Can anyone shed any light on what the problem is/might be using IE6? I have posted some sample code below..
Javascript snippet if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete"){ document.getElementById("cboArea").innerHTML=xmlHttp.responseText; }
HTML snippet <label for="cboArea">Area:</label> <select id="cboArea" name="cboArea" style="WIDTH: 65%"> <option value="0">Choose an area...</option> ... !! Originally filled from database source !! ...
</select>
As I said previously the return from AJAX call works fine as I have displayed the results using an alert(); method call and also this it works in Firefox.
I have a multiple select box that is dynamically populated based on a selection from another select box. There are 3 possible results:
1. Every click on the parent select box replaces the html of the child <select> with a "Loading..." message. Then it runs an ajax request to a server side page that returns JSON data back to the post-processing function.
In that post-processing function I check to see if any data was returned for that selection.
2. If data was returned, replace the child multi-select with the data.
3. If no data was returned then replace the child multi-select with a default message.
Now the problem I'm seeing. When I select an item from the parent select that I know returns data, the child multi-select seemingly doesn't update, but when I mouse over the select I see the changes.
BUT! On a whim, I created another <div> just to see if it was in fact a problem with the select, so everytime I updated the <select> I also updated this new <div>. Magically it all worked. So what I ended up doing is keeping the <div> there, just set it to display:none and now it works like it "should".
I'm using jQuery.ajax and jQuery.html to handle the processing.
This is for a test, am not sure what they mean by "do not hard-code the resulting quarter years in the javascript":
instructions: When a user selects a date from the investment cycle drop-down box, the subsequent investment values must display the next three fiscal quarters.
E.g:
Do not hard-code the resulting quarter years in the javascript. (empahsis mine...;-)
The subsequent quarters should be presented with checkboxes which are all unchecked.
Checkboxes in markup:
The values to populate the checkboxes (value and label) have to be hardcoded somewhere, no? what am I missing?
I am populating a ‘Select’ object with data from an Array, and I succeed in load the page with the required data on the ‘Select’ dropdown list. But when I see the source code generated (view-source code) from the browser there is no option on the ‘Select’, you can see this form the browser source code:
And I want that appears the options generated in order to be able to talk with server, because server is waiting for some value (1, 2, 3 or 4). Now when I submit the form the server don’t recognize the option (value) received. So maybe the source code generated should be: Code:
I'm trying to create a simple birthDate form. Depending on the month selected, it will populate the days field. Then once the day is selected it will populate the years field.
I want the years to start @ 2008 and end @ 1900. But I cant get the count to stop at 1900, it will go right down to 1. Can someone take a look at my populateYears() function and see where I have gone wrong? Code:
I have an application with many fields over several pages. After hitting Load, a Summary field is filled (via Javascript) with all the input from the various fields. This is working perfectly. Is it possible to make a button that, when clicked, will open the user's email client with the body filled in with the contents of this Summary field? Obviously the field will need a unique ID so JS can target it, I'll use onClick, and I'll need the mailto: tag, but I don't know what syntax to use to put it all together. Also, the script should check to make sure the field is full (they should tap on "Load" first), so the length of Summary needs to be checked. Only the Safari browser will be used for this.
this is for a test, am not sure what they mean by "do not hard-code the resulting quarter years in the javascript":
Instructions: when a user selects a date from the investment cycle drop-down box, the subsequent investment values must display the next three fiscal quarters. (e.g. for "January 2010", the subsequent quarters will be Q2 2010, Q3 2010, Q4 2010; for "June 2010", the subsequent quarters will be Q3 2010, Q4 2010, Q1 2011.)
Do not hard-code the resulting quarter years in the javascript (empahsis mine...;-)
The subsequent quarters should be presented with checkboxes which are all unchecked.
My markup for the checkboxes:
The values to populate the checkboxes (value and label) have to be hardcoded somewhere, no? what am I missing?
(and, since markup doesn't change when u set value for chkbx dynamically, how do you check that you have set correct value for the checkbox? (don't know if it shows in Firebug, since don't know if code have there now is correct (have this funky code in there for now.. not sure how to approach this...$('#checkbox1').attr('value', 'Q2 2010');
And how do I populate label? (<label for=""....></label> -- do I need to give label an id? or can you grab "for" attr for a label with jQuery?)
I'm trying to populate select boxes depending on choices in other select boxes. In my case, the person has to choose a type of fixture type, then a select box with all the models would populate, and then a third select box with the watts have to populate.
In my code, the second select box is populating, but the third one is not. I'm sure that the problem is not in the php, but has to be in the jquery side. I'm a newbie in jquery and javascript.
I'm populating a select pulldown based on the value of a previous option on a pulldown
When I run it on the firebug command line it works fine, but when it is run in the source it does not populate the html with option's for the pulldown.
I have a page that has a group of elements and i would like to add that whole group to the page as the user clicks add group button. In other words, i want to start with group1, then when i click on the add button, it will add group2, and so on.I have seen the various posts on the web on creating dynamic content, but every example i have seen works with javascript that is inside the html code.
I would like to have the code in a separate javascript file and when i call the function from the html page, it would add the group of elements i want to follow the current group.I need to pass the document to the function and then have the function add the group to the html page.
I have a table set up with a .click() function on each row sothat if it is clicked on, a class is added to the row thus changingthe background, etc. I was wondering if there was is a way to takethe id of the row that was clicked and populate a hidden field withit. What would I need to include in my .click() function for this towork?Here is my current one:
