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.
I am trying to figure out a way to modify all elements in an existing array by adding a value to the value already in the array.
I need to prompt the user to input a value and add that value to an index in the array. I was thinking of using a for loop as I need to do the same for each index in the array.
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.
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.
Talking about a js script which changes an iframe src through a "ref_to iframe.setAttribute("src", document_path);", I would like to launch a check() fct when this new document is loaded.
Of course, knowing, I don't want (and can't n some cases where document is generated by a cgi script) to edit every possible document which is potentially loadable in the iframe.
In fact, I've through about the idea to on fly add an "onload='check ()'" to every document, but don't know how to do that :-(
Maybe using attachEvent or something arounnd this : I don't know. Of course, I wish a solution working in the majors browsers.
I am having trouble making a website for a vacation rental I pieced this javascript code and form together with a simple goal in mind: -to have 3 checkboxes each with its unique variable
weeks: 2,000 weekends: 325 weekdays: 275
-to allow users to check one or more of the checkboxes, and multiply it by a quantity they choose (ie "I'd like to stay for two weeks (2 x 2,000=6,000) and one weekday (1 x 275=275)
-finally, to add up the totals at the end (6,000 + 275=6,275)
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?
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;
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.
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?
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.
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 ";".
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...
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".
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?
