Using Form Elements In Array?
Sep 22, 2010
I am creating an array based on form elements. I then am trying to create an IF (and nested IF) statement to check if the fields are empty and then with the nested IF statement use certain fields to create mathematical functions.
So far I have this:
function QuantityMWh(form) {
var formchk = document.forms[0]
for (i = 0; i < formchk.elements.length; i++) {
if (formchk.elements[1].value == "" && formchk.elements[2].value == "") {
[Code]....
It's only checking the first field and not the second, and vice versa. i.e. if only one field has text then it passes.
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Oct 14, 2009
I have a form that has an array of input values:
I do this so I can loop through the values in php... now...that's the easy part... the hard part comes to this:
Next to each of those boxes is a search button that allows the user to open up a popup window that they can search for an item, and select the item. Once they select the item it should populate that particular input box with the selected item. I can easily do this with a uniquely named input box, but can't seem to figure out how to do it with an array of input boxes...
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Oct 28, 2009
I use a very handy function (onsubmit) to validate empty fields in a form:
PHP Code:
function validate_form(){
var x = document.getElementById("form1");
for(var i=0; i<x.length; i++){
if((x.elements[i].value == "") && (x.elements[i].title)){
[Code]....
It worked like a charm, until I had to change a dropdown dynamically with ajax. I have two dropdowns, the second being populated with ajax (php, mysql) by the option selected in the first one. The second dropdown has the title attribute filled so the previous function can validate and ask the user to select something. However, it seems like fields loaded dynamically with ajax wont appear inside the x.elements[] array. I've tested it over and over, it keeps ignoring it. It isn't even in the array. Why?
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Feb 22, 2011
I'm trying to add the text of a textarea form to the string that's contained at:
myarray[a][b][c]
It was easy to pull out the value of the textarea with this:
textinput = $('#mytextarea').val();
But then when I try to add the variable into the array, it doesn't work. I'm not able (apparently) to do this. Fingers crossed that I'm doing something dumb?
This doesn't work:
myarray[a][b][c] += newstringvariable;
Nor this:
myarray[a][b][c] = myarray[a][b][c] + textinput;
I'm guessing there is a very simple (probably syntax related!) solution to this. I'm open to doing this via jQuery or regular javascript.
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Jan 27, 2011
For some reason my script only works when I have at lease two checkboxes. To simulate the problem just run it once with two html input checkbox elements
-> check one checkbox and press submit -> it works
-> Now remove one input checkbox field and check the remaining checkbox & submit -> Bamm doesn't work...
[Code]....
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Aug 24, 2010
I have a form element that looks like this:
<input type="text" onchange=doSomething(this)>
and a function:
function doSomething(theField){
}
I know that within the function I can access properties of the field (e.g. theField.name and theField.value). But how do I access theField's index number in the form's elements[] array -- from the "this" reference that was passed to the function? I.E. if this field is elements[3], how can I get at that 3?
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Jun 27, 2011
Nice module, but I can't get it too work.
Code:
/**
* validate.js: unobtrusive HTML form validation.
*
[code]....
but the script alerts me nothing?
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May 2, 2011
I'm still struggling with creating a properly formatted form. This problem it two-fold. The first part isn't strictly a javascript problem, but I've included it here because it relates to the second part, which is:
1. Given the form below, how should I structure the input names to get an array like that at bottom?
2. The scripts are used to provide running totals and subtotals. They're fun - try them! But how should I modify these scripts so that they can continue to work with the amended naming policy?
[Code]...
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Sep 17, 2010
What is the correct syntax for an nested array where each array element has 3 elements, a number and two text strings?
Code:
array = ['1, Old Man, Old Man','2 Black Sheep, Black Sheep',....]
should the text strings be in double quotes("")?
Code:
array = ['1, "Old Man", "Old Man"','2 "Black Sheep", "Black Sheep"',....]
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Apr 10, 2010
This one is throwing me off! Either I am making a stupid mistake or I'm doing it totally wrong I have an array, and I am trying to select unique values from it and assign it to another array. Here is the code:
Code:
var flag;
for (i=0;i<=pdfs.length-1;i++)
{
flag = 1;
for (j=0;j<=pdfs2.length-1;j++)
[Code]...
The problem is that the if (pdfs2[j] == pdfs[i]) statement ends up never being true. There are URL's to pdf files in the array. On the other side, if there is a much easier way to select unique values from an array, please feel free to point it out.
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May 6, 2007
I'd like to reorganize the third, fourth, fifth and sixth, as well as any
elements thereafter in an array in random order:
var a = new Array('first','second','third','fourth','fifth','s ixth','etc')
In other words, the first, second and third element should remain in
position 0, 1 and 2, while the fourth, fifth and sixth, etc. should appear
in random order.
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Nov 3, 2010
I am working on a page where the user will select a location from a dynamically generated dropdown list. I was able to create the php multidimensional array (tested and working) from a MySql database using the users information at login, but I'm having problems converting it to a javascript multidimensional array. I need to be able to access variables that I can pass to a number of text fields within an html form.For instance, if a user belongs to a company with multiple addresses, I need to be able to let them select the address they need to prepopulate specific text fields.
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Jan 2, 2011
Is it possible to have one of nine elements of an array, each containing code that will fill in a square in a tic-tac-toe game, randomly chosen then the code executed?
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Feb 17, 2011
I tried the following code based on a post I saw [URL[ somewhere else about summing all the elements of an array together. When I tried it though I couldn't seem to get it working. what I did wrong or tell me a different way to sum array elements together?
<script type="text/javascript">
Array.prototype.sum = function() {
for (var i = 0, L = this.length, sum = 0; i < L; sum += this[i++]);
return sum;
[Code]...
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Mar 21, 2011
This is my code to add and delete dynamic rows and auto calculate the amount field by multiplying qty and rate.
<form name="staff_reg" action="<?php echo $_SERVER['PHP_SELF']."?".$_SERVER['QUERY_STRING']; ?>" method="post" enctype="multipart/form-data">
<table width="100%" border="0" cellspacing="0" cellpadding="2">
[code]...
I would like to know that how can I show the value of all the elements in array "amount" in total field?
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May 30, 2006
how to do you add elements to an array? am looking at section dealing
with arrays in JS Bible, can't find how you add to an array.. in the
last few years I've been doing much more Java than JS, am used to Java,
where you can't add elements to an array, but use a Vector instead.. and
it's very easy to add to it (use add() method..) how to you add
elements to an array in JavaScript..
I looked up array obj, don't see method to add to array.
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Jul 20, 2005
I do a search and get the following in xml:
<user>
<exec>
<entry>Value1</entry>
<entry>Value2</entry>
<entry>Value3</entry>
<entry>Value4</entry>
<exec/>
<user/>
How is the easiest way to find the number of entries in the array and
how can iterate over each value to test if the given value matches
another variable?
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Jun 1, 2011
I have an array as such:
Code:
var Array = ("1|This Item","2|That Item","1|Here Again",'2|Once More");
I need to be able to count how many elements have the 1 and how many have the 2.I know that I can do the loop
Code:
for (var E in Array) {
(var a, var b) = E.split("|");
if (a == 1) {CtA++;} elsif (a==2) {CtB++;}
}
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Oct 4, 2010
I have this simple code to put elements into an array
[Code]....
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Feb 15, 2012
I have an array in javascript which has n elements. The number n is not known. How to delete all the elements from the array?
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Aug 16, 2011
I am trying to add the elements in an array together and display the result, I am using a user prompt to obtain the elements for the array, this works fine but when I come to add the elements together and display the result all I get is a row of the elements not their sum. The user inputs are all integers (the program adds the prices of items together so they are all numbers,amounts). If the user enters 10, 15,15,20 the result I get is 10151520 not 60.
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Jun 30, 2011
how can I get the number of elements in an array
Code JavaScript:
function get_active_link(myul, myclass, menuItems){
var menu_unidades_yolo = document.getElementById(myul);
[code]....
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Jan 10, 2011
First of all I need to define an array of 3 elements. Each element is associated with a different first name. Then I shall realize a first function to add a name in the table. The function takes as parameter the table previously created and return it containing an additional element whose value is the name that the visitor wants to add. I must use the dialog box prompt so that the user can specify the name he wishes to add in the table.
I shall also perform a second function which will display the name that is included in the different array elements. This function will also take the table in parameters and proceed with setting the display name with a dialog box alert type that contains all of the name separated by ";".
[Code]....
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Jul 28, 2011
I have a little problem (maybe I'm just to tired to get it -.-). I'm trying to access elements which are descendants of another element. I do it by using
containers = $('.likeReceiver .powermail_radio_inner'); When counting the elements with .length it says, there are three elements. So far everything is working.However, each time I try to access the elements all I get is a message which says "Undefined".
[Code]...
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Nov 25, 2009
I have a fieldset with a bunch of input's inside.
I am wanting to put all of these elements inside the fieldset into an array.
Then once I have that array use a for loop to iterate through each of the elements values and display them with alert.
This is what I have tried, but am expecting to be a fair bit off the mark.
Code:
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Aug 24, 2006
Is it possible to search an array without looping through all the elements?
hoping for something like this;
myarray.exists("one")
which may return the element number or a true or false depending if the element being searched exists.
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