Dynamically Creating An Array In A For Loop?
Apr 21, 2011
I am trying to create a function that creates an array comprised of filenames based on a given range. I.E if 2-8 is selected and a foldername of UMCP/ and a common name of college is also given, the function should return and array such as [UMCP/college2.jpg,UMCP/college3.jpg.....UMCP/college8.jpg]. Here is what I've got but the alert that should tell me the filename of the first image says it is undefined, how can i fix this?
function getArrayPhotosNames (total,count,first,last) {
/*window.alert("get Array Photo Names");*/
var folderName = document.getElementById("photofold").value;
var Alias = document.getElementById("commonName").value;
[Code]....
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Jan 21, 2011
Modifying my code:
I have this C# code that is connecting to database and creating a array(list)
Code:
I'm trying to pass it to a javascript function so I can then pass it to a silverlight page so I was able to create this easy javascript that show a aleart box on startup of the list(array)
Code:
But I want to do something like this and can't get it:
Code:
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Dec 22, 2009
The idea here is to have a function in javascript that would take the value from one input box (lets call it txbA) and use it as the limit for a while loop or for-next loop and create a series of input boxes each with a unique name so that its value (when entered or changed)could later be used in other calculations.
When I try something like:
function MakeMany()
{
var y=parseInt(txbA.value);
for(var x=0;x<y;x++)
[Code]....
You can call this from a button and get the text boxes, but how do I get them to have unique names such as MMtb1, MMtb2, MMtb3 etc. ??
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Nov 7, 2010
i was assigned this task(see attached), but for some reason I'm having trouble getting it to work, i don't know if my problem is in the algorithm or if I'm using the wrong structures to solve the problem.
[Code]...
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Jul 23, 2005
On my form i have multiple select which all have an id value total1, total2,
total3 etc so i am trying to detect how many there are and then use this to
caculate a total.
Is there a javascript reference to basically go to a form and produce a loop
which will show me how many select drop down boxes there on a form.
Or would i have t use something like
for (var i=0; i < frm.elements.length; ++i) {
form.elements.length
form_field = frm.elements[i]
and then have a nested if to detect if it is select value or has an matching
value ..
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Sep 16, 2011
I have to stuff multiple objects in global var populated in a foreach loop and seperated by a comma.The loop is:
// GlobalG.objects;
$('.class').each(function() {
var title = $(this).text();
var src = $(this).attr('src');
[code]....
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Aug 4, 2010
I am trying to create a simple HTML table with the squares of numbers and for some reason the loop is not triggering.
Code:
<table border="1">
<tr><td><h2>Table of Squares</h2></td></tr>
<tr><td>
Number
[Code]....
When I run the page all that comes up is the start of the table that is written before the script executes. Also is there any way I could use a debugger to catch this on my own? I tried the firefox debugger but it didn't catch anything when I ran it through, maybe I was just doing it wrong.
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Oct 14, 2011
I have been struggling with a loop of mine. The loop should create a grid, of 204,000 squares(div's). And the total would create a grid field of 340 pixels by 600 pixels. All div's are sized 1 pixel.The idea is to create a grid, that shows temperature data in a gradient style, like a weather heat map. The data is collected from temperature sensors which are connected to a database.The only problem is that because it's such a massive amount of calculations to be calculated by javaScript, the whole thing freezes. Here is a sample of my code:
Code:
function makeGrid()
{
for (var i = 0; i < 8160; i++)
{
[code]....
Another problem is, the grid should be reloaded every 5 seconds or less.Because that's the interval used by the temp sensors, and for the usage that's planned for the project, its really important that the data is constantly up to date. using another web based language are welcome, as long as they are combinable with PHP or AJAX. Or maybe there is a ready to use library that I dont know of. Couldn't find anything for jQuery.
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Mar 2, 2009
I want to create an associative array dynamically pulling the index values from an array (propertyArray); Associative array is created inside create function and then returned. But after it is returned, I cant use index names to retrieve values. It returns undefined as below code shows.
Code JavaScript:
var propertyArray=["a","b","c"];
function create(){
var array=[];
[code]....
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May 13, 2009
I have several elements that I can perform show hide and fadeIn animations on but I want the action to continue on an endless loop. Is this possible? If it is, are there any cpu usage issues when using a loop?
<script type="text/javascript">
$(document).ready(function(){
$(".upright").hide(300);
$(".cntrlg").show(300);
$(".cntrlg").hide(300);
$(".cntrmed").show(500);
$(".cntrmed").hide(300);
$(".cntrlg, .lowleftmed").show(100);
$(".cntrlg, .lowleftmed").hide(100);
$(".lowrightmed").show(300);
$(".lowrightmed").hide(300);
$(".cntrmed").show(300);
$(".cntrmed").hide(300);
$(".upright").show(2000);
$("#dai1").fadeIn(3000);
$("#dai2").fadeIn(3000);
$("#dai3").fadeIn(3000);
$("#june1").fadeIn(3000);
$("#june2").fadeIn(3000);
$("#june3").fadeIn(3000);
});
</script>
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Feb 10, 2010
I'm using the following code to create a quick and dirty search tool for a site we're building at work as part of an RFP.My issue is that rather than creating a new window for the results page (which is what it does now), I'd really prefer that a new div be dynamically created on the page where the results would be placed.Maybe that's not possible? At the very least,how to make the results display in the same window rather than opening a new one?
<SCRIPT LANGUAGE="JavaScript">
var item = new Array();
// "Page Name","path","Page Title","Many,Key,Words","Descriptive Comments"
[code]....
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Mar 15, 2010
I created <a> tag dynamically and attached event to it.
Code:
var link = document.createElement("a");
link.setAttribute('class','devNodeStyle');
link.setAttribute("title",device);
link.setAttribute("href","javascript:void(0);");
link.attachEvent("onclick",openDevDetailWindow);
"attachEvent" is working only in IE. How to make that working in other browsers like Chrome/FF?
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Jul 23, 2005
I'm trying to create a fairly simple form which contains a label, a
button, and a textbox.
I've done quite a bit of reading and, from what I can figure, the
following should work, but isn't....
var rowCommentBox = document.createElement("TR");
var cellCommentBox = document.createElement("TD");
var frmCommentBox = document.createElement("FORM");
frmCommentBox.setAttribute("METHOD", "POST");
var strAction = ""submitComments.asp?Org="+strOrg+"&date="+activeWeekBegins""
frmCommentBox.setAttribute("ACTION", strAction);
var rowFrmCommentBox = document.createElement("TR");
var cellFrmCommentBoxLabel = document.createElement("TD");
var strFrmCommentLabel = document.createTextNode("comment:");
var cellFrmCommentBoxButton = document.createElement("TD");
var btnFrmCommentBoxButton = document.createElement("INPUT");
btnFrmCommentBoxButton.setAttribute("TYPE", "SUBMIT");
btnFrmCommentBoxButton.setAttribute("VALUE", "UPDATE");
var cellFrmCommentBoxTxtbx = document.createElement("TD");
var txtbxFrmCommentBoxTxtbx = document.createElement("INPUT");
txtbxFrmCommentBoxTxtbx.setAttribute("TYPE", "TEXT");
txtbxFrmCommentBoxTxtbx.setAttribute("cols", "50");
txtbxFrmCommentBoxTxtbx.setAttribute("VALUE", strComments);
cellFrmCommentBoxLabel.appendChild(strFrmCommentLa bel);
rowFrmCommentBox.appendChild(cellFrmCommentBoxLabe l);
cellFrmCommentBoxButton.appendChild(btnFrmCommentB oxButton);
rowFrmCommentBox.appendChild(cellFrmCommentBoxButt on);
cellFrmCommentBoxTxtbx.appendChild(txtbxFrmComment BoxTxtbx);
rowFrmCommentBox.appendChild(cellFrmCommentBoxTxtb x);
frmCommentBox.appendChild(rowFrmCommentBox);
rowCommentBox.appendChild(frmCommentBox);
tbodyOrgToAdd.appendChild(rowCommentBox);
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Jul 20, 2005
Given an expression f = ƈ*x+3' from a user input I would like to do some sort of:
function userFunction(x):
return f(x)
is it possible with Javascript?
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Sep 24, 2009
I know this is not strictly related to jquery but I don't know how to make it works. I'm working on a function that has as variable an array and for each element I need to create a piece of code for an other function. For instance when the array contains [0,1,2] I need to call
[Code]...
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Sep 20, 2009
im trying to create a script for greasemonkey but its still written in javascript. so here is what im trying to do. Ive got a dynamically created division that aligns to the right of the browser window. Now im trying to put links inside it as you normally would with like a document.write statement or other methods. The only problem is, any method i try wont work for me. heres my code, maybe someone could give me some things i could try.
[Code]....
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Oct 13, 2010
I've got an input with a value. The input is called 'command2' and I want to send it's value to the 'rover2' object (although I don't know if that object exists yet). I test and say if(rover2){... and if not then I create the object/if so then I insert the value.Question is: I want to do:Code JavaScript:var rover2 = new Rover();but I want to pass the name of the new object by association, so in effect:Code JavaScript:var "rover"+i = new Rover();How would you do that? So that the objects and their names are generated dynamically (or [perhaps a better explanation] so that the string value of a variable can be used as the name of new variable/object)?PS Bonus marks: If I hold HTML fragments as an object and those fragments include inputs, is the value of the input collected as well? i.e. if I have
Code HTML4Strict:
<fieldset>
<input id="foo" type="text" />
[code]....
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Aug 9, 2003
Here's my problem: I need to create a variable name dynamically, made up of a string (say "var_name_") and an integer. Ultimately I want something like this:
var_name_1 = 'whatever value I want'
var_name_2 = 'whatever value I want'
var_name_3 = 'whatever value I want'
...
var_name_N = 'whatever value I want'
But the actual variable names are determined at run-time, so I can't just hardcode them.
Any suggestions? JavaScript doesn't seem to have a Variable type, so I can't just cast a string into a var...
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Dec 2, 2010
As part of my form I have a box for the user to input the number of text boxes needed. I already have the page creating the textboxes but do not know the IDs of each text box. Once the user adds textboxes they can click add again to create more. If the user previously added 3 textboxes and now enters 4 I want the program to just add one more instead of 4 more.
[Code]...
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Jan 4, 2008
Here is the code:
function selectDefaults(buttonGroup){
for (i=0; i < buttonGroup.length; i++) {
if (buttonGroup[i].checked == true) {
for (count=1;count < document.addForm.recordCount.value; count++) {
var doc = document.addForm.feature1[i]
var featureVal = doc.value;
featureVal = featureVal.substring(0,2);
if ( featureVal == "SF"){
doc.checked = true}
} }}}
I need help in the second 'for' loop. Currently it is hard coded to replace the value of document.addForm.feature1 - but this field name is dynamically generated via the page it resides within. That being said, its name/id will increment depending on how large the recordset is. i.e. feature2, feature3, feature4 etc....
How do I get this to work in the javascript? I need to use this script to search all the 'feature#' fields in the form when the script is triggered. All I could think of was this: var doc = document.addForm.feature+count+[i]
which gives me a syntax error.
The purpose of this script, for those who will wish to know, is to automatically select all the features of the product that have the text "SF" (standard feature) in their value.
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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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May 15, 2010
I want to find a way of using canvas tags that are created at runtime. I went about this by trying to change the id of the tag, ONLY to find out that javascript did not like the fact that I was using numbers, even though I converted to String first...
var count = 0;
for (var item=0; item<20; item ++) {
if (count%5==0){
document.write(" ||| ");
}
var canv = document.createElement("canvas");
canv.setAttribute('width',300);
canv.setAttribute('height',300);
num = 505;
aStr = num.toString(); // does NOT do the job for some reason !!!???
aStr = 'canvas'; // this works...
canv.setAttribute('id',aStr);
document.body.appendChild(canv);
count += 1;
}
var C = document.getElementById(canv.getAttribute('id'));
if (C.getContext) {
makePlot(C); // does the plot to the canvas
}
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Nov 1, 2011
Im developing a script for dynamically creating html table structure so that from the input that has been given to the function it will fetch the values one by one and will create the structure. My problem is i want to add attributes to the elements created. sample code attached.
with( window['o' + elementname]){
for(j=0;j<attrs.length;j++)
{
if(attrs[j].indexOf("=")!=-1){
[Code]....
here the element name will be get from the parameters passed to the function. i want to verify whether the line in bold is correct or not coz the id is not updated in output.
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Feb 5, 2010
I'm a JavaScript noob, and I'm playing with it. I have some code which created a div inside another div by using the innerHTML of the outer div. That had an onclick event which worked fine. Now I'm trying to create the div as an object, so I'm doing something like this:
Code JavaScript:
var obj = document.createElement('div');
obj.id = "object";
obj.onClick = function() {alert("Clicked");};
obj.innerHTML = "something"; // an img tag in the actual code
document.getElementById('objects').appendChild(obj);
The new div is shown, but clicking on it does nothing. (I originally had another function, but changed to the alert for testing.)
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Apr 16, 2011
Im having problem generating the labels for content created by the following function:
function setOutput(){
if(httpObject.readyState == 4){
var answer = httpObject.resultsponseText.split(",");
var results = document.getElementById("resultsultadosScan1");
var article = document.createElement("div");
var weight = document.createElement("div");
var price = document.createElement("div");
article.className = "article";
weight.className = "weight";
price.className = "price";
document.getElementById('outputText0').value = httpObject.innerHTML= answer[0];
document.getElementById('outputText1').value = httpObject.innerHTML= answer[1];
document.getElementById('outputText2').value = httpObject.innerHTML= answer[2];
article.innerHTML = httpObject.innerHTML= answer[0];
weight.innerHTML = httpObject.innerHTML= answer[1];
price.innerHTML = httpObject.innerHTML= answer[2];
results.appendChild(article);
results.appendChild(weight);
results.appendChild(price);
}
}
A friend wrote this sample script to achieve generation of labels on my script, but I have been trying for hours with no luck, can someone take a look and tell me the correct usage of this script:
Code:
function createLabel() {
var target = document.getElementById("target");
var label = document.createElement("label");
var text = document.createTextNode("Article");
label.appendChild(text);
target.appendChild(label);
}
Can you help me with the correct "combination" using my script above, a "real life" example?
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Apr 24, 2010
html and javascript and am having problems getting a table to be generated from a given set of rows and cols. I was successful at creating the table, but trying to add functionality such as mouse over is giving me some trouble. I have a feeling its because my variables are out of scope when the function is hit, but can't think of a better way to do it.
function setTable(){
var myElem = document.getElementById('tableDiv');
numRows = 16;
[code].....
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