Dynamically Creating Variable Names
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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Feb 11, 2010
I am working on a project where I need to redo the same thing with new variable names
Code JavaScript:
var paper1 = new Raphael('img1', 500, 500);
c1 = paper1.rect(0, 0, 50, 20, 5);
var paper2 = new Raphael('img2', 500, 500);
c2 = paper2.rect(0, 0, 50, 20, 5);
I would like to be able to do this with a for loop. So in the above example I would want paper+i, img+i, and c+i was trying eval("paper"+i) but didn't work.
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Feb 16, 2010
I am doing a project where I would like to be able to generate a series of variable names dynamically in the following example
var paper1 = new Raphael('img1', 500, 500);
c1 = paper1.rect(0, 0, 50, 20, 5);
var paper2 = new Raphael('img2', 500, 500);
c2 = paper2.rect(0, 0, 50, 20, 5);
would like to use a loop to increment names
for (i=0;i<=5;i++)
[Code]...
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Aug 31, 2010
I am probably going about this all wrong, but I'm not sure how to do this.Basically I need to create a unique variable name for each element that has the same class name and set each one to zero.I thought I could just concatenate the index value to a variable name to create unique names. Something like:
$('.toggle-trigger').each(function(){
var toggleTriggerIndex = $('.toggle-trigger').index(this);
var t + toggleTriggerIndex = 0;
[code]....
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Jul 23, 2005
Does anyone know how to make this work?
var sectionId = 5;
repeat_section_sectionId();
function repeat_section_5(){
alert("firing");
}
The function's name contains the variables value, so how do we make
the engine see that?
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Mar 2, 2011
I'm having a problem with the page at http://www.bathfringe.co.uk/contributors2011_2.php
The user is able to add new performances to the form. This functionality is provided by cloning elementsPart of the code should add a 'counter' array key to the names of the cloned form inputs (full code obviously available at the page linked above):
Code:
counter++;
// Find the element to be copied
[code]....
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Dec 11, 2009
Find it really hard to understand these random variable names and what they are doing,im sure the random variable names are pointers and counts
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Dec 28, 2010
this is my first time posting on this forum. Hope you could help me. I am a beginner when it comes to Javascript. Here is my first stumbling block in this language.The code that works
if(x==1)
{
p1.value="x";
[code]....
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Jul 23, 2005
I have a table that I populate with an array using ASP. As each row is created, the form object names are appended a numeric, such as:
i = 1
<select name="select<%=i%>">
...
...
...
i = i+1
next
I then pass "i" to a javascript function, so that I can access the values of each form object. I can't figure out how to properly concatenate the "i" and still allow access to the value in the form object. Currently I have:
var ps = 'platSymbol' + I;
alert(ps)
var sel = 'document.frmUpdPlatGrp.' + ps + '.value'
alert(sel)
I know I'm wrong, as this comes back as a complete string. Ultimately I want to have something like this:
var s = document.frmUpdPlatGrp.platSymbol2.value - so that I can actually get the value.
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Jun 14, 2011
I need to create 14 javascript Ajax objects and assign properties and events to them. Since most of the code is just being repeated, I'd like to do the whole thing in a loop using an array for the object names. This is a portion of the code as it now stands:
boxe2_tree = new dhtmlXTreeObject("boxe2_div", "100%", "100%", 0);
boxe2_tree.enableCheckBoxes(1);
// etc.
boxe2_tree.loadXML("./xml/boxe.xml",function(){loadTree('boxe2_tree');});
warn2_tree = new dhtmlXTreeObject("warn2_div", "100%", "100%", 0);
warn2_tree.enableCheckBoxes(1);
[Code]...
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Nov 21, 2010
I have a form with several types of checkboxes, and I'm trying to check all but one of them to determine if any of those have been checked. I do not want to check 'all', but I want to see if any of the 'check_' or 'check2_' checkboxes have been checked. There are a variable number of checkboxes, so this is just an example with two of each. Set 1 and Set 2 will always have the same number of checkboxes as each other, though.
[Code]...
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May 6, 2009
I'm trying to use variable variable names using the window[] functionality. It works fine when you literally specify an array's base variable name, but I have a multidimensional array and would like to use window[] to build the name of the specific sub-array I'm looking for, like so:
// here's my multidimensional array
myArray = new Array();
myArray['id'] = 'foo';
myArray['sub'] = new Array();
[Code]....
However if temp is the name of a sub-array (e.g. 'myArray[sub]), and not the base array name(i.e. 'myArray'), then window[temp] evaluates to "undefined".
Can the window[] functionality handle this somehow, or do I have to resort to eval() or something else?
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Aug 9, 2010
Have the Javascript function below which takes the name of an input on the form passed as a variable so that 1 function can check many inputs as I have up to 3 fields per form that can accept this data range.
function contact_number_check(formObj,field)
{
var obj = document.forms[formObj];
var regExp = /^([0-9 ])+$/;
alert(field);
[Code]...
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May 5, 2009
I'm trying to use variable variable names using the window[] functionality. It works fine when you literally specify an array's base variable name, but I have a multidimensional array and would like to use window[] to build the name of the specific sub-array I'm looking for, like so:
Code:
// here's my multidimensional array
myArray = new Array();
myArray['id'] = 'foo';
myArray['sub'] = new Array();
myArray['sub']['id'] = 'bar';
[Code]...
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Feb 12, 2009
Last evening I ran across this script which I think will address a need I have; replacing my radio buttons with images. The one difference I have is that I need to use a different button image for each of the 5 buttons in my group.Unfortunately, the script dose not apply unique classnames within the generated mark-up so if I'm to use this I need to apply some sort of counting variable that increments and use this variable to append the classname with.Around line 52/53 of jquery.checkbox.js is
Code JavaScript:
/* Wrapping all passed elements */
return this.each(function()
{
[code]....
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Apr 26, 2011
I have been given a piece of code that validates passwords, but need to edit the code with correct variable names and indentations etc.
Here is the original code:
What the variables n1 and n2 are/ what they do?
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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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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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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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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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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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