Assigning Values To Form Fields Dynamically Using Iteration?
Jul 8, 2009
I am trying to assign values to a bunch of form fields. However, I don't want to loop through EVERY field in the form, just a specific subset of fields. The fields I am trying to change are all named similarly myField1, myField2, myField3.So, my thought is that I would like to use a for loop and loop through the appropriate fields by simply incrementing a variable and appending it to the end of the string "myField" in order to change the appropriate field.How can I evaluate "myField + iterator" into a useable reference to change the value of said field?
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Oct 20, 2011
in Javascript I need to dynamically assign the values of textboxes from an array. For example, The textbox ids are box0,box1,box2 and the array is [0,1,2]. Here i need to assign 0 to box0 and 1 to box1 and 2 to box2.
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Jul 26, 2010
What I have is this html:
<div class="persons">
<table>
<tr>
<td>Name: </td>
[Code]....
Now what do I write in this iteration loop to first get the text from the FIRST name and age box, in the first <table> (so I can work with tem). And in the next iteration loop get the SECOND <table>īs input fields text values?
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Jun 24, 2011
I created a form that contains about 10 form fields and would like to add the option to dynamically add more sets of those 10 fields if a user clicks a word or a button but I need help. I'm a beginner when it comes to JavaScript. This is what I need to generate dynamically.
<div id="dynamicInput">
<ul>
<li>1</li>
<li><input name='textfield1' type='text' size='10' /></li>
[Code]....
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Jan 20, 2011
I need to make a form in which I have to enter upto 20 email addresses. But I want to show only 5 fields first and then an Add More button. Upon pressing the Add More button it should add another field into the form and displayed. I have seen this type of thing on several websites but don't know how to do it.
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Jul 8, 2010
The site I am working on has a few forms that allow the user to add new form fields (textbox, textarea, etc.) dynamically. I am using a structure smiler to:
<form>
<label>Name : </label> <input type = "text" / >
<label>Age : </label> <input type = "text" />
<span id = "add_field"> Add Field </span>
</form>
<script type = "text/javascript">
$(function(){
//create a new field then append it before the add field button
$("#add_field").click(function(){
var new_field = " <label>Name : </label> <input type = "text" / >";
new_field+="<label>Age : </label> <input type = "text" />";
$(this).before(new_field);
});});
As you can see I create the field using javascript and just insert it before the add field button. However I have seen lots of other sites have a smiler sort of function but they seem to make an ajax call for the field as they use a loading-type animation during the few seconds it takes for the field to be added. My questions are : Which is a better way of doing this type of thing? And why is one better than the other? If it is better to create the field client-side should I change how I am doing it? Instead of creating a string representing html and appending it should I be doing it a different way?
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Jul 27, 2010
Below is the html and js I have so far to dynamically place form fields on the form when a certain radio button is marked (Fixed hours). Problem is I can't get the fields to go away if the other radio button is marked (Variable hours). Solutions on what code my js needs to remove the fields when the opposite radio button is marked?
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Jan 27, 2010
I have 4 text boxes that are supposed to load 4 seperate values of data from one field in one table from a database. The field is called interface_cropsettings (from the interface table) and these values have been concatenated and comma seperated in this field.
Code:
Once the form is filled out and saved, the data is inserted into the database and the values from these 4 text boxes are concatenated, comma seperated and inserted into that one field correctly.
(Example)
If the 4 text boxes have the following values:
In the database field they become:
However, if the form is closed and then re-opened, each text box displays the entire database field rather then each value seperated in the corresponding text box.
(Example)
All 4 text boxes display this:
I already know why the data appears like this in the form, my problem is that I'm not sure how to write the javascript to seperate the values into the correct corresponding fields, assuming javascript is what I should be using!
Also, this is kind of irrelevant but just in case you're wondering, this form is part of a cold fusion application!
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Mar 10, 2010
I have a form with 3 fields that will allow a user to search a database of clients by either name, email, or client id number. However, I would like the user to only be able to put information in one field. It can be done be either deleting the other two fields when the user inputs information into a different field, or by disabling the other two fields when the user enters information in one (and also frees up all fields if the user ends up deleting what they entered).
Below is a start of what I had. Basically, it will disable the fields when I mouse out of them but won't re-enable them when I mouse back in. As you can see, I tried various combinations of events. (My code below also doesnt null out the other fields when the user opts to use a different field than the one they first began to enter info in).
<html>
<head>
<script type="text/javascript">
function makeDisable($ID){
var x=document.getElementById($ID)
[Code].....
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Nov 2, 2004
My client wants to upload multiple files to the server using the FILE type input of the form. Their requirement says that once they click the browse button of the FILE INPUT type , besides file browsing window another FILE FIELD is added at the bottom of this one. and when the user clicks the browse button of second, it adds another until the user clicks the UPLOAD button to submit the form.
I dont know it is possible or not ???? if yes then please tell me how.
The alternate way is to give drop down menu with number and when the USER chooses certain number then ..that amount of FILE FORM FIELDS will be added. i.e if user chooses 3 then three file fields are there to upload 3 files at a time.
I have written a script that i am pasting here, but when i choose the drop down menu and select value the FILE FIELDS are shown but the original drop down menu vanishes..
Please review my code and modify it or refer some script to me.
IF The first choice is possible, i mean adding each FILED by browse button click , then tell me its code, other wise modify this code that i am pasting or give me some link to download a premade script. Code:
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Jul 23, 2005
i have a form and would like to check two fields.
if field 1 containes the letter 'c' and the other field contains
'undefined', then an error should apprear ina box on the screen.
can anyone point me a piece of code ?
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Mar 1, 2009
So, I have a form that, when the user clicks on a link, uses J/S to generate extra form fields for extra information. I can retrieve the value of the dynamically generated fields using $_POST in I.E., but it doesn't work in Firefox (no value is returned). Retrieving values for the static fields is fine in both I.E. and Firefox.
Here's the code - is there a function I'm using that could be replaced with something more friendly to Firefox?:
<script type='text/javascript'>
var i = 1;
function addArea() {
var newArea = addElement();
[Code].....
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Mar 3, 2011
The link below is a stripped down section of a form.
[url]
The problem I'm having is with altering the names of the fields. I'm trying to add an identifier on the end. "_X_1", "_X_2" after the new sections are added.
NOTES:
Incidentally, "_X_" is a delimiter so the key can be converted into an array on the back end to extract data from it.
I can't alter the "repeater" variable because it would be extremely complicated on the back end.
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Feb 14, 2009
I have a form that I am trying to loop through the elements of and come up with a total, when the form is submitted. The goal is to alert users that they have not entered a minimum or maximum number of choices before letting the form submit. The fields in question might be checkboxes in some cases (with a value of 1) or textboxes in others with user-submitted values. Here is a stripped down example...The html
<form class="phpws-form" id="elections_vote" action="index.php" method="post">
...
<input type="text" name="Candidate_Vote[2]" id="Candidate_Vote[2]" size="3" value="" />
<input type="text" name="Candidate_Vote[3]" id="Candidate_Vote[3]" size="3" value="" />[code]....
...problem is, is that total is always 0. I know I'm missing something, and I suspect that 'inputs' is not what I want it to be,
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Feb 15, 2010
I want to do is add the values of seven text fields on a form and pop that value to an eighth field. I thought the code below would work, but I get "NaN" on the sum field.
Code:
function addHazWaste() {
document.getElementById('HazardousWaste').value = 0;
var HazWasteTotal = 0;
var HazWaste1 = 0;
var HazWaste2 = 0;
var HazWaste3 = 0;
var HazWaste4 = 0;
var HazWaste5 = 0;
var HazWaste6 = 0;
var HazWaste7 = 0;
HazWaste1 = parseInt(document.getElementById('HazardousWasteSentToLandfill').value,10);
HazWaste2 = parseInt(document.getElementById('HazardousWasteSentToWasteToEnergy').value,10);
HazWaste3 = parseInt(document.getElementById('HazardousWasteIncinerated').value,10);
HazWaste4 = parseInt(document.getElementById('HazardousWasteRecycled').value,10);
HazWaste5 = parseInt(document.getElementById('HazardousWasteReused').value,10);
HazWaste6 = parseInt(document.getElementById('BiohazardousWasteSentToLandfill').value,10);
HazWaste7 = parseInt(document.getElementById('BiohazardousWasteIncinerated').value,10);
HazWasteTotal = HazWaste1 + HazWaste2 + HazWaste3 + HazWaste4 + HazWaste5 + HazWaste6 + HazWaste7;
document.getElementById('HazardousWaste').value = HazWasteTotal;
}
If I run a separate function that just sets all form field values to zero (including the first line of this function). The summing works!!! Why won't it work the way I wrote it??? It won't work if I set the default value for the sum field to zero, either...
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Dec 8, 2010
I am having some trouble trying to fix my math equation to calculate the total rent by aquiring values from my form fields. Converting the date fields to days and finding the number of days via two date fields is mainly where I am having trouble. Also, I am trying to have a window pop up before submission but the onclick event does not seem to function properly.Below is the math equation I have come up with:
//calculate days from date field
function calcTotal(date1, date2) {
//assign variables
[code]....
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Feb 3, 2009
I want a text field's value to populate/copy on submission to 2 hidden fields value that resides within the same page. Example below
<input type="text" name="county" size="5" maxlength="5" value="55555" />
<input type="hidden" id="age" name="yourcounty" value"" />
<input type="hidden" id="DOB" name="ourcounty" value"" />
For information this will be sent to a php file. How this could be possible?
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Jun 5, 2009
Currently, I have a php form with various inputs, and a div where I am embedding an (initially) empty open flash chart object.Right now, I am calling a php file on the submit of the form, which takes the form data, calls a python script to process the form data, and then creates an open flash chart object using the data the python script returns.There are a few problems with this:
1. When the submit on the form is called, it goes to a different page where the chart is displayed, when I would really just like to update the contents of the chart div where I initially embedded the empty chart.
2. The processing of the form in the python code can take some time, so what I would really like is to have the chart "check" the output of the python script periodically and update the chart each time, adding the new data points to the old ones.
I know I can do all of these things with javascript and Ajax, I just can't seem to find any tutorials or examples that are exactly what I am looking for.
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Jun 6, 2009
I'm working on an ordering form which calculates the total order price using Javascript. I have a checkbox which I want to use to toggle the display of various items, and also reset the value of an item depending on whether or not it is checked.
Further details
I have a checkbox for the colour "Black" which, when checked, hides a SELECT, a bit of text, and "Quantity" field. It also resets the value of the "Quantity" field to zero.
When the "Black" checkbox is unchecked, the three items (SELECT, text and Quantity) are revealed again, and the Quantity field for "Black" is reset to zero and hidden.
The reason is that users can only either EITHER a black item or select from a list of colours. Black items are a different price to all others.
How the form works
When the user enters a quantity into a text field for each item, the price of that item is added to the total at the bottom of the form. When the form is submitted (with PHP validation), it emails the order to a salesperson. The price of each item (for emailing the order) is set using hidden form fields with defined values, while the order total is calculated using the id of each quantity field (e.g. "item_31_85.00").
What I need to know
I want to achieve the following when the "Black" checkbox is clicked:
Toggle the display of three items (SELECT field, text (in a DIV) and an INPUT)
Reset the value of the INPUT field (and reset a different INPUT when the checkbox is clicked again)
My current code
The code I'm currently using in the PHP form is below (truncated for readability):
Code:
<input type="checkbox" name="black" onclick="togglecontent('colour_box','colour_price','color_quantity','quantity_reset')" /> Black
[Code].....
Currently I can hide the SELECT and accompanying text when I check the "Black" checkbox, but it won't reset the INPUT value nor hide it. I've not yet attempted to do unhide and hide the Black text and input since I can't get this part working yet.
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Jul 23, 2010
I got help with creating a method (to have only increments of 10 as valid values for certain fields in the form).
jQuery.validator.addMethod("roundnumber", function(value, element, params) {
return (value % 10) == 0;
}, "Your order of vaccine must be in increments of 10");
I've also found info on how to add rules to a class (there are multiple fields and name generated dynamically so I have to use class).
jQuery.validator.addClassRules("fluzone_", { roundnumber: true});
So I've added both these lines to additional-methods.js, but it does not validate it on submit. I do have php back-end logic that sets values to the nearest round number but I do want Js navigation before submission.
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Nov 21, 2010
I'm having some trouble with my dynamically generated form fields.
As you can see I'm generating new form fields, but the problem lies within the grade field. I have it set up now so that when you change the grade the color of the <select> box changes relative to the grade. A-D are green, F is black with white text, Not Taken is just regular white with black text and In Progress is lightly shaded grey.
I want it so that each one can be changed individually, but I can't seem to be able to figure out how to do that. Heck if you change the first one's grade field, that colour follows the rest of the clones.
This is the jQuery I'm using to change the color of the thing.
$("select").change(function()
{
$(this).each(function () {
[Code]....
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Sep 22, 2010
I am not new to jQuery but I just want to ask the best way to approach this. Basically I have a textfield in which the user is going to type in a number (for example 20) and after this textfield lose focus jQuery will be triggered to create whatever number of textfields the user put before (in this case 20).
So, to illustrate: How many users do you have: [ 2 ](and after the field above lose focus, the below will be generated)
Fullname: [ ]
Fullname: [ ]
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Dec 15, 2009
I am making a small image annotation tool for research purpose. I have many images shown to a <user> and the person has to click on the image to enter further information about the image.
I would like to POST information about the <user> which is same for all images and also some fields containing the image information to php page containing next level of processing (the page is again same for all image and takes the user and image information as POSTed information).
So I was wondering if there could be a javascript function which i can put like onclick=submitform(imgname, imgA etc.) which submits a FORM with user information (same for all images hence not passed) and image information (strings containing info abt the images e.g. name, quality rating etc.) fields to another php page.
I could put forms for each image but I am dealing with hundreds of images here.
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Oct 17, 2005
I have a function whose parameter is a reference the element that called it:
function someFunction(el)
{
...
}
The function is assigned to the onclick event of some elements in the
HTML source:
<input ... onclick="someFunction(this);" ...>
and dynamically to others:
elRef.onclick = someFunction;
When someFunction() is called from the statically-assigned onclick, el
is a reference to the element. But when it has been added dynamically,
el will be either undefined (IE) or 'event' (Mozilla et al).
To assign the right value to el, I can test if el exists and if it does,
whether its constructor is some type of HTML element or 'Event'. But IE
doesn't support the constructor property for elements (or have I just
not found it yet?) nor does it understand 'Event' the way Mozilla does. Code:
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Jun 3, 2011
I'm having trouble getting results on google chrome.
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Nov 26, 2011
I designed a form having ten fields, will it be possible to have a jquery function that will make all the values in the form field to be displayed in a separate div outside the form by click of a button or a link?
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