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]...
alright im making a sortable displays in my website but i am trying to figure out how to pass my javascript array to and external php script through POST method so i can update the column, position, hidden, or closed in the database i am using jQuery Sortable Portlets
located here [URL]
do you know where i can find what i need??
I cannot figure out how to return the array back to the main method!
import java.util.*;
//lab 3
public class Prices{
public static void main(String[] args){
double []array;
array = new double[10];
double fullPrice;
fullPrice = fillPrices(array);
System.out.println("testing");
}public static double fillPrices(double []tenValues){
Scanner input = new Scanner(System.in);
double prices;
System.out.println("Please enter 10 prices: ");
for (int i = 0; i < 10; i++)
tenValues[i] = input.nextDouble();
return tenValues;
}}
I thought you return an array by simply return (array name);
I am working on creating a JSON feed that is later being used with Arshaw's fullCalendar, which I am integrating into Expression Engine CMS. Currently I am doing the following, and all works well.
<?php $ms_title_array = array(); ?>
<?php $ms_start_date = array(); ?>
<?php $ms_due_date = array(); ?>
[code]....
What I am curious about is I am trying to create another array set that is pulling new information from a different source. Is it possible to use the json_encode(); method to encode two separate variables?If not, is there a way I can create the event variable and store both the information you see in the while loop with information that I would store into a new while loop? I'm a little stumped
I'm trying to do something, but I don't know if it's possible.
Basically, I want to have a public static class method that could
access a private object's method. I would like to be able to do :
Class.method(InstanceOfClass);
The method would then access a private function from Class by doing
something like
function method(param) {
param.privateMethodOfClass();
}
I've done a lot research and experimentations but just can't come up
with a solution... I don't even know if what I'm trying to do is
possible.
Why is the callwhy is the slice method only a method of an Array instance? The reason why I ask is because if you want to use it for the arguments property of function object, or a string, or an object, or a number instance, you are forced to use Array .prototype slice.call(). And by doing that, you can pass in any type of object instance (Array, Number, String, Object) into it. So why not just default it as a method of all object instances built into the language?In other words, instead of doing this:
function Core(){
var obj = {a : 'a', b : 'b'};
var num = 1;[code]....
//right now none of the above would work but it's more convenient than using the call alternative.
}
Core('dom','event','ajax');
Why did the designers of the javascript scripting language make this decision?
I have two methods and I would like to call somename1 method from within somename2 method. I have tried several ways to do so however I keep getting "TypeError" or "RefernceError" I have tried several ways to reference but I am still unable. What am I doing wrong. I would think this would be easy to do.
View 1 Replies View RelatedIs the form below a valid method of changing the id of an XHTML element, specifically the one actually being referenced? It does not seem to work for me.
document.getElementById("Original_Name").setAttribute("id", "New_name");
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?
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.
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) {
function addflags() {
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.
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>");
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.
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++)
{
theArray[i] = prompt( "Please enter your name");
}
for(i=0; i<theArray.length; i++)
{
document.writeln( "theArray[" + i + " ] = " + theArray[i] + "<br />");
}
</script>
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:
View 4 Replies View RelatedSafari 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?
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";
alert("a="+a.join("*")+String.fromCharCode(10)+"b="+b.join("*"));
.... 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?
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>
====================================
"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?
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:
<html><head>
<script type="text/javascript">
function getValue(id){
[code]....
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;
function addVal (val)
{
if (!(val in myArray))
{
myArray [val] = 1;
myArray.push (val);
}
}
addVal ('one');
addVal ('two');
addVal ('three');
addVal ('one');
addVal ('two');
addVal ('three');
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)
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]
I am dabbling with objects and have successfully created an object with various properties, one of which is an Array, and all is fine. the Question I have is can I make an Array of objects? I have the following object:
dataSeries.Type = value
dataSeries.Name = value
dataSeries.dataPoints[n] = Array of values
dataSeries.color = value
What I would like to do is have an Array of multiple objects supposedly like:
dataSeries[0].Type = value
dataSeries[1].Name = value
dataSeries[2].dataPoints[n] = Array of values
dataSeries[3].color = value
Is this possible?
Have an array l am building up during end user selections. There is an option to clear all selections, how do l then clear the array?
View 7 Replies View RelatedI have been working on this for the last couple days and have made a lot of headway, but am still stuck on a spot. I have a group of checkboxes on my form that allow the user to select which items apply. I want to verify that at least one checkbox in each group has been selected before allowing them to continue. PHP requires the naming of the arrays to include the [] but jsp (for verification) doesn't like it. I read about and used the .elements method to overcome part of that problem so my for loop is now executing for the number of items in my group:
for (var i=0; i<document.form1.elements['dining_out1[]'].length; i++)
however my if statement won't execute:
if (document.form1.elements['dining_out1[i]'].checked)
even if I have checked ALL checkboxes. I have tried all the different methods I can think of to test for a checked value on each item in the array, but I can't quite figure out what I am missing.
How do you change array values based on if..then statements?
if(radioObj[0].checked == true) {
nPrice = new Array ("106.99" , "86.99" , "115.99" , "319.99" )
}
if(radioObj[1].checked == true) {
nPrice = new Array ("89.99" , "74.99" , "102.99" , "239.99" )
}
Specifically, what is wrong with that above?