# How To Merge Two Arrays

Jul 16, 2010

for example if I have two arrys

arr1[10,20,30]
arr2[40,50,60]

how to merge them to get arr1[10,20,30,40,50,60]

## Merge The Two Arrays Into A Third Array

Mar 28, 2009

I've been given two arrays:

arr1 = [1,8,9,12]
arr2 = [2,3,10,11,13]

My task was to merge the two arrays into a third array. Done, no problem, merged then sorted a new array. I understand there is a way to merge the two without using "merge" then "sort" functions. My reference material doesn't go into it, and I can't find an example of how this would work. I think there would be a way to do it using a for loop and then "push", but I could be way off.

Can anyone tell me how they could see merging two without using the merge then sort? And what would be the advantage to doing it this alternate way as opposed to using merge? Is there a case where it would be preferable? I'm so new at this that I can't fathom doing anything other than merge.

## Merge The Values Of 2 Arrays?

Jul 4, 2011

I am trying to merge the values of 2 arrays.

array 1 = 1, 2, 3, 4, 5
array 2 = a, b, c, d, e

Resulting in:

array 3 = 1-a, 2-b, 3-c, 4-d, 5-e etc

both arrays that will be used originally will always of the same length. Both arrays will contain numbers

## Merge To Functions

Jul 23, 2005

How do I "merge" the two functions below - checkFromDate() and
checkToDate() - so that I only have one function. I want to do the same
validation in both text fields, but only have one function that does all
the validation.

<html>
<script language="JavaScript">
function checkFromDate() {
var ToFrom = document.form.txtFromDate.value
// Do some other validation...
}

function checkToDate() {
var ToDate = document.form.txtToDate.value
// Do same validation as above...
}
</script>
<body>
Start Date : <input type="text" name="txtFromDate"
onBlur="checkFromDate()"> yyyy/mm/dd <br>
End Date : <input type="text" name="txtToDate" onBlur="checkToDate()">
yyyy/mm/dd
</body>
</html>

## Need To Merge Two Sign-up Forms Together

Aug 23, 2001

I have an ezine with two different editions, a European and North American. I've decided to merge the two forms into one to simplify the sign-up procedure. However, I can't get the thing working

Here is the code for the two seperate forms, which was created automatically by the excellent Max-eMail. I've tried to merge them with a radio button like:

Code:
<input type=radio name="lists[15]" value="1LitNorthAmerica" CHECKED> North American Edition
but the values in [] are different for the countries, sex, etc. (For some reason the "[14]" and "[15]" stop the radio-button working - can't select between the two)

Could anybody be so kind as to help me merge the two forms together?

Here's the code (I haven't listed all the world's countries in the drop-down box to save space):

## Possible To Merge Several Images Into One Image

Jan 15, 2010

Is it possible to merge several images into one image. Then get image that was combined into one and save it as if it were 1 image alone.

## Any Way To Merge Two OnClick Statements

Apr 5, 2010

I try to figure out how I can merge two onclick in one: The one is opening a "lightbox" div with a fullsize view. Now I would like to count this click with loading a site in an iframe. I am not that known in javascript, therefore my question: Is it possible?

PHP Code:
onclick=parent.fullsize.location='[URL]';

This is the onclick statement in the lightbox.js:
PHP Code:
anchor.onclick=self._genOpener(num)}var body=d.getElementsByTagName("body")[0];

Separated the both onclick are not working. How I can put them together in one onclick? I tried this, but it is not working:
PHP Code:
anchor.onclick=self._genOpener(num)}var body=d.getElementsByTagName("body")[0] && parent.fullsize.location='[URL]';

## JQuery :: Possible To Detect Empty Td And Merge It?

May 22, 2010

How to turn table A to table B? code...

## JQuery :: Extend Or Merge - Username / Mod

Sep 14, 2011

Currently I'm trying to do the following:
{
config : {
user : "name",
mod : true
}}

That is JSON nr 1, now I got the following
{
config : {
mod : false
}}

What I need as a result is:
{
config : {
user : "name",
mod : false
}}

If I do a \$.extend(json1, json2) then I will lose my user name.
If I do a \$.merge(json1, json2) I will keep my username, but my mod will not be overwritten.

## JQuery :: New Browser No Session Merge?

Jun 12, 2010

I have application A and application B deployed in two different app servers.B is launched in a new browser window when user clicks on a link in A .So application B starts as a popup.the problem I am facing is if I logout in B, automatically A also logouts and vice versa.this may be happening becasue of session merge, when new window is called there any way in java script or jquery to open a new browser window without passing the session information ?

## Gmail Mail Merge - Editing Script

May 25, 2010

I'm trying to setup a mail merge using a gmail docs script from [url]. So far, it works pretty well, but I want to edit it to include the following:

1) The script should start with "Dear Noah" as opposed to "Dear Noah_Kaplan"

2) I want to add my canned response to the script so that it always appears at the bottom of the e-mail.

3) Lastly, I want the outgoing mail to be saved as individual drafts in my drafts folder in gmail before it's sent out. That way, I can decide if I want to add a sentence or two to personalize each individual email draft.

By the way, here's the script I want to edit:

## If One Selects Merge, Then Want Another Form Displayed With Input Fields?

Oct 18, 2006

Given a drop down list such as:

Code:
<SELECT NAME=sections >
<OPTION>Merge</OPTION>
<OPTION>Nuke</OPTION>
<OPTION>Merge & Nuke</OPTION>
</SELECT>
If one selects Merge, then i want another form displayed with input fileds etc.

Can anyone show a script (i.e. javascript) that does just that or care for a example?

## Arrays And IE

Jul 23, 2005

I've noticed that IE apparently has a horrible implementation of the
array object, since traversing one with as few as 1000 items it tends
to pop up a dialog informing the user that the script is taking too
long. I tried splitting the array into a 10x100 two-dimensional array
as well as changing the array to a linked list, but neither improved
the code's efficiency sufficiently. Can anyone suggest methods for
optimizing array efficiency, or some other workaround for yet another
one of Bill Gates' blunders?

## Xml Vs Arrays

Jul 23, 2005

I have a web document created by a script and instead of going back to
the db I choose to either create an array to iterate through or xml to
parse through.

So, my question is: What are the trade offs between using an array to
load data from or an xml structure?

My array would look like:

myarray = [[],[],[],[]]

My xml like:

<xml>
<data>
<a></a><b></b>
</data>
</xml>

I would use js to iterate or getElementByTagName to find data. I am thinking the page would load faster using xml, and then the user may not even use that functionality. In all cases I have to load the array to memory.

## Arrays Different In IE And Others?

May 23, 2007

I am with XHTML and CSS as much do I have to learn in JavaScript programming. I’m just beginning to understand and modify the DOM and I ran into something that I couldn’t find a solution for after some extensive search. I have this function:

if(document.getElementById && document.createElement) {
var children = document.getElementById('pagelist').childNodes;
for(var i = 0; i < children.length; i++) {
children[0].className = 'bulgaria'
children[1].className = 'england'
children[2].className = 'italy'
children[3].className = 'sweden'
}
}
window.
}

The XHTML is an unordered list with 4 list items and sub lists in those list items (plus links in each li) and I want to add a country flag (set as background image in the CSS) to the direct children of the ul (the first level list items).

Now I discovered that Firefox is only reacting to odd array numbers, i.e. children[1], 3, 5, and 7 (the even numbers have "no properties") while IE is applying the classes correctly(?) as intended above (0,1,2,3).

At which point did I go wrong? Sorry if this is a real stupid question but I’m pretty new in this field and my researches didn’t bring any acceptable results.

## Arrays Of Arrays...

Oct 5, 2005

Is what I'm doing the right approach to creating an array of arrays? I have an external datafile with several employees' records. They are stored in an array with each element of the array being the complete employee record, ie: name, date of hire, etc., etc. These attributes are delimited by a :. I'm trying to separate these attributes while keeping the original array intact. That way I can access these attributes and validate whether or not an instance of the employee object will occur. There are too many records to create this from the start, so I'm trying to implement a for loop to do it for me. This is what I tried: datafile is the name of the original array of employees. emp is the array I'm trying to create .

for(var i=0;i<datafile.length;i++){
var emp = datafile[i].split(":");
//document.writeln(emp.length+"<br>");
/document.writeln(datafile[i]+"<br>");
}
//document.writeln(datafile[0]+"<br>");

## Arrays And Selects

Jul 23, 2005

How do I set this to "disabled":

<select name="awards[]" multiple size="6">
<option value="1">Award 1</option>
<option value="2">Award 2</option>
<option value="3">Award 3</option>
<option value="4">Award 4</option>
</select>

I don't know how many options there will be as they are fed from a DB.

## Suggestions About Using Two Arrays

Nov 23, 2005

Anybody got any suggestions about using two arrays. First i need to
ask the user their name and if their require a seat between 1and 5 or
between 6 and 10. I need to assign this information in two arrays.
Any suggestions. I have been working on this so far.
<script type="text/javascript">

var theArray = new Array(10);

//var sizeOfArray = parseInt(prompt("How many items will the array
have?", ""));

for(i=0; i<10; i++)
{

}

for(i=0; i<theArray.length; i++)
{

document.writeln( "theArray[" + i + " ] = " + theArray[i] + "<br />");
}
</script>

## Calculations With Arrays

Sep 12, 2006

I want to make algorithms that take selections from arrays and put them together in new ways. here is a simple array I set up for notes of a piano keyboard: Code:

## Strings As Arrays

Mar 6, 2007

Safari and FF seem to allow this:

var wiggy = "ABCD";

ch = wiggy[2]; // ch will contain the character 'C'

however my JS book seems to insist that I do this:

ch = wiggy.charAt(2);

and indeed doesn't appear to mention the first method at all.

Since for my particular purpose I want to treat the string as an array
of single characters, I prefer the first method rather than the second.
Is there any reason not to pursue this approach?

## Assigning Between Arrays By Value

Jul 20, 2005

Any neat way to copy a snapshot of one array to another?

A normal assignment results in the second array pointing to the first,
with changes to either array affecting both.

As a trivial example:

var a=new Array();
a[0]="zero";
var b=a;
b[1]="one";

.... this results in a and b being identical two-element arrays.

Is there any easy way to set array (b) to be a copy of (a) BY VALUE -
ie using the contents of (a) as they were at the moment of assignment,
but leaving the two arrays separate so that subsequent changes to one
array does not affect the other?

## Arrays And Functions

Jul 20, 2005

looking for a way to pass an array to a function.
====================================
<script>
function myfunction(arrayname)
{
document.write("blablabla"+ arrayname[1] +"blablabla");
}
</script>

<html stuff>

<script>
arrayname = new Array("what", "is", "wrong");
myfunction(arrayname);
</script>
====================================

## How To Add A Method To A Set Of Arrays

May 18, 2011

I'm a newbie of JS and don't know if I have got the right terms in my question. I want to lowercase all the arrays:

<script>
var txt = [
["Cats","Dogs","Rabbits"],
["Fish","Bones","Carrots"]
]
document.write(txt[0][1] + " love eating " + txt[1][1]);

[Code]...

## Using Arrays As Objects?

Jul 4, 2011

"When we combine FUNCTIONS with OBJECTS we get METHODS". Then he creates an empty ARRAY:

var a = [];

then he uses the "push() method" to add elements to the array.

a.push(1,2,3);

uh, methods are for *objects* right? Yet he is using them on an ARRAY.how an array can magically becomes an object that is manipulated by a "method"?I mean, the array is still an array, no? It never actually becomes an object, right? Yet we still use a *method* to manipulate it. See my conceptual quandry?

## How To Compare 2 Arrays

Dec 16, 2011

I have 2 arrays and I would like to compare the 2 arrays.If an element in array 1 is NOT in array 2 then I would like to display that element. In this case, I should only display the letter "c" but it doesn't work and I don't know why?

Here's my code:

<script type="text/javascript">
function getValue(id){

[code]....

## Arrays Vs. Objects

Jun 20, 2007

I recently had a problem where I needed to build up an array of strings, that would be join()ed into a string when the array building was complete. however, each value could only be in the array once.

This was a problem for a few reasons. Once a value has gone into an array the only way to check for it that works cross-platform is to scan the array looking for the value. FireFox has the every() and some() functions but they don't work in anything else.

Using an object to simulate an assocaiative array would allow me to avoid this problem by storing key/values with the keys having the same value as the value I was storing. I could then use the (a in b) construct to check that I had not already added a value.

However, array type methods won't work with objects, so I had no access to size () or join () meaning I'd have to manually build the string by iterating over the object.

My solution was to use an array object, but to store the provided data i nboth the array proper and as a property of the array object.

var myArray = new Array;

{
if (!(val in myArray))
{
myArray [val] = 1;
myArray.push (val);
}
}

console.log (myArray.length);
console.log (myArray.join (', '));

This approach does use up more memory but it does give me the advantages of both arrays and objects for little extra work. (if you don't have FireBug then replace console.log with alert)