Dynamically Add Elements With Javascript?
Nov 13, 2006
I'm adding people to a database. People have a first name, last name,
and a undetermined number of Cities and States with which they can be
associated. I've got a drop down box that I would like to use to
display the number of inputs to allow for city/state entry. I would
like to dynamically increase or decrease the inputs based on a user
changing the selection in the drop down box, without submitting the
script. Only the first city and state are required (which is why the
label is bold). Any ideas on the best way to handle this without
losing any potential city information that may have been previously
typed into the input (i.e. if I type San Fran into city0 and CA into
state0 and then change the number of cities to 4 - I'd like San Fran
and CA to still be populated in city0 and state0). Code:
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Jul 23, 2005
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)
{
picWindow=window.open('','','width=25,height=25,sc rollbars=1,resizable=1');
picWindow.document.writeln('<html> <head>');
picWindow.document.writeln('<SCR' + 'IPT type="text/javascript"
LANGUAGE="JavaScript1.1" SRC="resizewindow.js"></SCR' + 'IPT>');
picWindow.document.writeln('</head>');
picWindow.document.writeln('<body onload="resizewindow();">');
picWindow.document.writeln('<img src=' + pic + '>');
picWindow.document.writeln('</body> </html>');
picWindow.document.close();
}
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.
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Jul 23, 2005
Attached is a simple HTML file that adds and delete rows. In the add
row function I set an attribute "onClick" this triggers the
testMessage() function. When I try this in Firefox it works just fine
however on IE it just refuses to work.
What is interseting is the ROW that already exists has a similar
'onClick' event which works when the page is loaded, but subsequent
"row" additions to the table to not work in IE. Code:
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Feb 15, 2012
The code below will add new form elements when ever I click the add button. However when you add more elements the combo box element goes out of alignment.
multientry.js
function addValue(divname){
var newdiv = document.createElement('div');
newdiv.innerHTML = "<BR><INPUT TYPE='text' name='index1'>";
[Code]....
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May 28, 2006
Code:
Is this something that is better suited for Javascript/DHTML or AJAX? I have not been able to find any tutorials on how to do this. Can anyone give any suggestions? I am very new to both Javascript, and of course AJAX, since with out Javascript there is no AJAX.
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Nov 10, 2011
I have the following bit of code:
<script>
jQuery(document).ready(function() {
var url='http://search.twitter.com/search.json?callback=?&q=test';
jQuery.getJSON(url,function(json){
jQuery.each(json.results,function(i,reviewa){
[Code]...
I'm baiscally trying to get some twitter feeds and the rotate them. I can get it and everything like that but for some reason the jQuery doesn't pick up the divs that I appended to the container because when I alert the div.length like this: alert(divs.length); The result is always zero. The code works fine if I can populate that value but if I don't have it in the code before hand it doesn't work. However if I add a div to the container like this:
[Code]....
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Aug 19, 2011
How to dynamically add form elements using jquery?
Attached is a screenshot of what I am doing.
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Dec 15, 2009
This block for adding a text box works:
Code:
var secondCell = row.insertCell(1);
var el2 = document.createElement('input');
el2.type = 'text';
el2.name = 'ProjMemFName' + i;
el2.id = 'ProjMemFName' + i;
el2.size = 20;
el2.maxlength = 25;
secondCell.appendChild(el2);
But this block for adding a dropdown box isn't
Code:
var firstCell = row.insertCell(0);
var el1 = document.createElement('option');
t1=document.createTextNode("DBA");
el1.appendChild(t1);
el1.name = 'ProjMemTitle' + i;
el1.id = 'ProjMemTitle' + i;
el1.value = 'Team Mem #' + n;
el1.size = 20;
el1.maxlength = 20;
firstCell.appendChild(el1);
I get the TextNode, but not the dropdown box. I'm close, but trying to finish getting the syntax correct.
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Dec 23, 2010
I'm trying to write a script for a website that reads from a database and makes a separate table for each entry in the database. Since the number of entries can change, I want to dynamically create a div for each one, which I can later hide or display based on user selection. However, when I try to access the dynamically created elements by their ID, they return null. Is what I'm trying to do here actually possible?
for(var i = 0; i < tables.length; i ++)
{
var newDiv = document.createElement("div");
newDiv.setAttribute("id", tables[i].name);
newDiv.setAttribute("name", tables[i].name);
newDiv.setAttribute("class", "hidden");
[Code]...
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Mar 16, 2006
I have a set of scripts which rely on the ability to dynamically load css by constructing <link> elements via DOM scripting, and appending them into the page header. It works, for the most part, extremely well, but I need to be able to attach an onload function to said links. Unfortunately, this only seems to work in IE, not in FireFox or Safari (the three being my 'target' browsers under which the whole system needs to work.) Any means by which I can determine via Javascript whether such a link has finished loading? It doesn't have to be via onload if it's unsupported, but I need to be able to implement it across IE / Mozilla / Safari.
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Oct 30, 2009
in my case i want to add a new menu item(actually a div tag) to my existing menu when an event or method calling occurs. i want to append a div tag dynamically to my existing menu with all css and effects.
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Oct 26, 2006
I've got an class/object that depends on two js files, but i'd rather not add them on the pages that uses the class/object. Code:
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Mar 24, 2011
I am creating textboxes dynamically using the following code:
[Code]...
I want to have a function that will remove textboxes and the newline that is created. I have the following function to remove the text boxes but I cant remove the new lines that were created so an empty space is left on the page.function RemoveElement() {
var d = document.getElementById('spanManualInput');
var oldbox = document.getElementById('Value'+i);
d.removeChild(oldbox);
d.removeChild('br');
}
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Oct 26, 2011
In my application I render a couple of elements dynamically after the user selects an option in a dropdown list. When the user selects another option in the dropdown, I want to remove all the previous elements that was added dynamically. I've tried with the .Remove() function, but it seems the elements cannot be found in the DOM. I've looked a lot at the .live() events.
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Apr 5, 2006
I have form elements which dynamically generated like this...
<form name="formA" ...>
<input type="select" name="text_1" ...>
<input type="select" name="text_2" ...>
<input type="select" name="text_3" ...>
<input type="select" name="text_4" ...>
</form>
And I doing some validation like this.
function checkvalue()
{
var f = document.forms['formA'];
var eLen = f.elements.length;
for (var i=0; i<eLen; i++) {
if(f.elements[i].name == "text_" + i)
{ alert ( f.elements[i].name); }
else { alert (f.elements[i].name); }
}
It never goes into first part of if statement.. Is there a way I can
access these kind form elements..
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Jul 28, 2010
I'm building a custom component in Joomla. All the Jquery up till now is working just fine.
I'm not sure if I'm using the wrong keywords or what, but I'm not having much success finding a way to make the following happen:
I have a form that asks for a bunch of information. First it's name, etc... Then it asks for vehicle information: The code for that is this:
<table class="rsmformtable contentpaneopen">
<tr>
<td colspan="2">
<div class="rsmformtablediv">
[Code].....
So, what I want to happen is that there is an add vehicle link or button so that when someone hits it, it allows them to add in another vehicle. Of course it should also add some index to the id's of all the inputs as I will use the post data to add the vehicles to a database.
Now at first I thought I had found a solution, that works a little bit. But then when the PHP comes into effect things break.
Also, this is an aside: the truck vin row is controlled by jquery now. If the plan type selected is for a truck, it will show that row, if it's not then that row is hidden. I'm pretty sure I'll need to build a loop in the Jquery script that will allow that hide and show feature to work based on the index added to the truck row.
in my searching, the only thing I've really been able to find is that I might have to use AJAX, but that's not something I familiar with just yet.
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Aug 20, 2010
I have form that asks a simple question: "How many XYZs do you want to create?" Then, for every XYZ, it should create several new labels/inputs in the form.
That is, every XYZ looks like this:
<div id="xyz">
<label>Whatever</label>
<input> blah blah blah </input
</div>
I looked into .each() and .live(), but I can't wrap my mind around how to do this.
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Jun 1, 2010
It works perfectly but I need to add more fields than stated in the post. If I add in another field, only one field gets the increment. The other doesn't. Eg.
<form id="myForm" method="get" action="test.php">
<div id="input1" style="margin-bottom:4px;" class="clonedInput">
Name: <input type="text" name="name1">
Tel: <input type="text" name="tel1">
</div>
[Code]...
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Feb 10, 2010
I have a markup structure like this. code...
I will be adding 3 additional <div class="slide"></div> after the first one dynamically on $(document).ready(). In the DOM, it looks like this. code...
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Oct 20, 2010
I can see the raw HTML in firebug etc, but the dynamic elements (the ones created by jquery for example), obviously don't appear there. I struggle referencing some of them - Ideally I'd like to be able to trigger a display showing what handle to use for any given element - for example by clicking on them.
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Aug 18, 2010
Previously when developing my own modal windows I have been creating a "mask" div directly in my markup, in the CSS setting it to be display:none and then setting it to show() by jQuery when a button is clicked.
I'm sure there is a better way to do this but i'm getting a little stuck.
I tried adding the "mask" div and its content to the body using prepend() when my button is clicked but i found i then can't select any of the added elements in jQuery.
How can you select elements you have added to a page by jQuery?? Also if this is the right approach whats the best way to insert a block of html to a page??
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Aug 16, 2010
I am generating HTML based on user actions (in this case, populating a table with the result from AJAX calls).
In my context, I have a link where there is a Quantity field, which I would like to be editable. When I create the html, I give a unique ID to each row, (to reference to a JSON object), however I am unable to get the ID for said row, seeing as the DOM tree is parsed on the pageload and doesn't seem to update when I add elements to the page.
This means that $(this).parent('tr').attr('id') is not returning anything at all.
How would I make it so I can retrieve the ID of my row (which was created/added to the page after it was parsed)?
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Aug 21, 2011
I am trying to insert and remove form element dynamically. What I was doing was some sort of recipe program where a user can prefer to add for elements as he/she is done inputting a recipe. He/She can also remove the ingredient if he/she opts to. Here is the link: [URL]
I already solved the problem but I am not sure if what I did is an efficient one. The thing I did was clone the first child of the form. But I realized that if I would put text inside the first child of the for, the duplicate field will also contain the same text as the first child which I don't want to happen. This is why, I set the display of the first child of the form as none. I am not sure if this would cause some problem when I would submit the whole form so that the inputs will be saved in the database since the first child is empty. I was thinking that as the form will be submitted, I would just remove the first child.
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Dec 12, 2009
I'm created a set amount of dynamic elements based on some elements in another form to try to submit them when the current form is submitted and this just doesnt work. It creates all the elements succesfully and puts in their proper names and values, but on the next page they are not available in $_POST in php.Here's the exact javascript I'm using, I tried appendChild and innerHTML,
Code:
var elem = document.getElementById('submission_options').elements;
for(var k = 0; k < elem.length; k++)
{[code].....
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Feb 21, 2010
Is there a way to access a form element that was created using AJAX?I've had no luck when using 'document.getElementById( elementID )' as the element doesn't appear to be recognised.
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Jun 24, 2010
Question: I need a few good idea on the best way to save a webpage (even better a node of a webpage) in which a user has created new elements. (via javascript?)
Concept: User creates elements on a canvas (via Javascript) then has the option to save the layout of those elements. upon pushing save the Javascript packages the created and/or changed elements and sends then to the server to be processed by PHP
and saved.
Hurdles: saved data must include style attibutes, text, child nodes and so on. The when other users view the page PHP will build the elements from the original user saved file.
What I have Done:I have managed to use Xmlserializer to output the "canvas" element in firefox and safri I have used .outputHTML in IE to complish the same thing.Of course there are a few differences when comparing the two strings, mainly having to do with commas.IE does not surround id's in commas and FF does. This has me thinking there has to be a better way more consistant way. on other ways to save dynamic elements using Javascript, and PHP.
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