JavaScript - Is There A Way In Javascript To Create Dynamic Arrays

I have a javascript that loads images on the page based on the date you select from a drop down menu. So the images are displayed dynamically, however they are numbered 1 through 20.

Is there a way I can add a title tag to the images that will display on mouseover?

Here's the page I am working on. I want to add title tags to the six images on the right side of the page. They change based on the date selected.

webpage

Thanks.

Hi,

I have a webpage that needs to play a different mp3 file each day of the month from a javascript controlled html5 audio tag. I have the files on the server, and each filename ends with a number 1 through 31 (filename30.mp3, filename31.mp3 etc.).

Because javascript can easily give me the date for each day, how can I insert this date like... src="filename[date].mp3" within the audio tag? Inserting a date with javascript is easy for text on a webpage, but I am not sure how to produce this in html code that is yet to be rendered.

Here is the relevant portion of the html that I need the date to be inserted into:

Code:

<audio src="filename[need date here].mp3" id="audio"></audio>
<input type="range" step="any" id="seekbar"></input>

Many thanks for any help!

From the these form fields I want to be able to create an array in Javascript containing the same 'codes' that feature between the option tags (not the value="X")


Code:

<select name="options-1" id="options-1">
<option value="">Select an option</option>
<option value="1">KA-WH</option>
<option value="2">KA-BK</option>
<option value="3">KA-GN</option>
</select>
 
<select name="options-2" id="options-2">
<option value="">Select an option</option>
<option value="4">BADGE-1</option>
<option value="5">BADGE-2</option>
<option value="6">BADGE-3</option>
</select>

<select name="options-3" id="options-3">
<option value="">Select an option</option>
<option value="7">E-WH</option>
<option value="8">E-GD</option>
<option value="9">E-BK</option>
</select>

for example, from the above, I want a JS array for 'option-1' that contains KA-WH, KA-BK and KA-GN; plus an array for 'option-2' that contains BADGE-1, BADGE-2 and BADGE-3.

The above form fields will be created dynamically, may contain more or fewer items.

I then want to use the JS arrays to pull in images of which filenames match the 'code' in the array.

This has been resolved. The moment i posted it i realised the mistake i was making . Learnig how to delete my post, until then thought i would sdimply delete the content.

Any suggestions on how the javascript below should be changed so it will work with checkboxes that have brackets in the name? (I'm using foreach in php, and can't seem to get the php to work/work correctly without using them.)

Thanks!

Code:

function chktotal(j) {
var total=0;
for (var i=0; i < document.form1.ckbx.length; i++){
if(document.form1.ckbx[i].checked){
total=total+1;
}


if(total>8){
alert("Please only select 8");
document.form1.ckbx[i].checked = false;
total = total -1;
return false;
}
}
document.form1.totalval.value = total;
}


<input onclick="chktotal(2)" value ="Sample Item 1"  type="checkbox" name="ckbx[]">

Ok so this is probably a simple question but i have hit a wall he

So I have 20 arrays with incremental names (course1, course2, course3 ...)
What i want to make is a selection box with 20 options.
for each option the value would be course1[0] and the text shown would be course1[1].
if i write this code:

<code>
for (var i=1; i<=20; i++){
var select = document.getElementById("selectiontest")
select.options[select.options.length] = new Option (course1[1], course1[0])
}
</code>

The code works and the correct array values are put as the option text and value. I am having trouble getting the loop to move from course1 to course2, i used the loop counter in the array name like this:

<code>
for (var i=1; i<=20; i++){
var select = document.getElementById("selectiontest")
select.options[select.options.length] = new Option (('course'+i)[1], ('course'+i)[0])
}
</code>
this is where it stops working. I get 20 values of o. which i assume is the second character of course. How do i tell javascript to incrementally change the array name during the loop?

Hi i am confused in one topic and need help,

I have a javascript array containing objects like;
Object values are ordered as Type, Amount and count.

Object 1 => ("A" , 100 ,10)
Object 2 => ("C" , 50 ,10)
Object 3 => ("A" , 100 ,20)
Object 4 => ("B" , 200 ,10)
Object 5 => ("A" , 10 ,10)
Object 6 => ("B" , 100 ,10)
Object 7 => ("C" , 100 ,5)
Object 8 => ("C" , 50 ,5)

In the end i want to group these objects like ;

("A" , 100,30) (Note : 30 = 20 +10)
("A" , 10,10)


("B" , 200,10)
("B" , 100,10)


("C" , 100,5)
("C" , 50,15) 15 = 10 + 5


How can i do this in javascript, note that the new types will be added to this array ?

hey guys i have the following code that extracts the information from the questiondiv then i have a for loop to search the array but it keeps returning it has no answer can someone help me please and i know im most probly doing somthing realy silly wrong.
P.S some reason the codes indenting got messed up when i pasted it here
Code:

<html>
<head>
<script type="text/javascript" src="http://code.jquery.com/jquery-latest.min.js"></script>
<script>
function code()
{
function getNodes(prop, val, meth, nd, useSelf )
{
 var r=[], any= getNodes[val]===true;
 nd=nd||document.documentElement;
 if(nd.constructor===Array){nd={childNodes:nd};}
  for(var cn=nd.childNodes, i=0, mx=cn.length;i<mx;i++)
  {
    var it=cn[i];
    if( it.childNodes.length && !useSelf ){r=r.concat(getNodes(prop, val, meth, it,useSelf ));}
	if( any ? it[prop] : (it[prop]!==undefined && (meth ? ""[meth] && 
		String(it[prop])[meth](val) : it[prop]==val))){
		  r[r.length]=it; 
	}
  }//nxt
 
return r;
};getNodes[null]=true;getNodes[undefined]=true;
//end getNodes()
var answer;
trivia = new Array('test?','test1');


								var triviaGet = getNodes(
									"data",	//examine each node's .data property (only hits text nodes)
									/\?/,		//looking for text with a "?"
									"match",	//using String().match method to accept arguments[1]
									document.getElementById("questiondiv") // looking in the question div
								)[0].textContent.split("?")[0]+"?"	//show text of first match
							alert(triviaGet);
								var i=0;
								var answer1;
								var answer2;
								for(i=0; i < 8400; i++)
								{
									if(trivia[i] == triviaGet)
									{
										answer = trivia[i]+1;
										document.getElementById("test").innerHTML=(answer)
										break;
									}
									else
									{
										document.getElementById("test").innerHTML=("Answer not found!");
									}
								}
								
								
		
//search trivia array for match to question
//when found the answer is the next one in the array so if it finds the question at index 7261 then the answer is in index 7262
// TODO: insert answer into text box...

}

</script>
</head>
<body>
 <div style="display: none;" id="questiondiv">
You challenge The Wiseman to a game of trivia, he asks you this question:<br/>&nbsp;<br/>
               test?<br/>&nbsp;<br/>
                <input class="dungeoninput" type="text" size="16" id="answer" value="" maxlength="32"></input><br/>
                <div class="btn100" style="margin-top: 6px;"
				onclick="loadDiv2('/dream/explore?action=acceptTrivia&qid=727'); return false;">Answer</div>
                </div>
				<div id="test"> test </div><br />

<button value="code()" onclick="code()">click me</button>
</body></html>

Hi, I'm kinda newbie in javascript and would really like some help if you wouldn't mind?

I'm working with dreamweaver and VBScript and have drop down lists being populated by dynamic recordsets, the tables that are being used are text fields and everything is working fine other than one niggly thing I want to do and just don't seem to be able to get the javascript code right

The data I have has two columns; area and technical issue. As the area contains duplicates I have this as a separate drop down list with a distinct
in the sql command and from an onclick event from the 'area' drop down list, I get the value of the selected item

[var x = document.NewFacilityAdminDetailsTest.ara_component.selectedIndex;
var ara_component = document.NewFacilityAdminDetailsTest.ara_component.options[x].value;]


all's well so far....

The second drop down list contains all the 'technical issues' which is great, BUT because its a dynamic recordset its for ALL of the areas and I want to be able to take away the technical issue values in the technical issues drop down list that don't belong to the area that's been picked and I also dont' want the user selecting a technical issue that isn't linked of the area.

I've tried some of the samples I've found by googling and even the adobe example but they all seem long winded and I never quite get the code right and the second drop down list just keep showing ALL 'technical issues show' for ALL of the 'areas'.

Surely there's a bit of javascript to turn the second drop down list recordset into an array, loop through the array and remove the technical issues that don't match the selected value from the 'area' drop down list and put the array into the second drop down list instead of using the recordset?

Any help would be soooooo useful.
Best Regards
Joan, Cheshire

Hi,
I'm new to JS and I am trying to build my first script. My problem, is I'm trying to build a multi hide/show script, displaying paragraphs of information. If I want multiple variables for the script do I have to use an array? and if so, how can I construct this array?

Here is my script as of now,

<!--
// this tells jquery to run the function below once the DOM is read
$(document).ready(function() {


// choose text for the show/hide link
var showText="Resume";
var hideText="Hide";
var profile_showText="Profile";
var profile_hideText="Hide";

// append show/hide links to the element directly preceding the element with a class of "toggle"
$(".toggle").prev().append(' (<a href="#" class="toggleLink">'+showText+'</a>)');
$(".profile_toggle").prev().append(' (<a href="#" class="profile_toggleLink">'+profile_showText+'</a>)');


// hide all of the elements with a class of 'toggle'
$('.toggle').hide();
$('.profile_toggle').hide();

// capture clicks on the toggle links
$('a.toggleLink').click(function() {
$('a.profile_toggleLink').click(function() {

// change the link depending on whether the element is shown or hidden
if ($(this).html()==showText) {
$(this).html(hideText);
}
else {
$(this).html(showText);
}
// profile_toggle
if ($(this).html()==profile_showText) {
$(this).html(profile_hideText);
}
else {
$(this).html(profile_showText);
}
// toggle the display
$(this).parent().next('.toggle').toggle('fast');
// profile_toggle
$(this).parent().next('.profile_toggle').profile_toggle('fast');

// return false so any link destination is not followed
return false;
});
});
});

//-->

Right now the script doesn't work with the bottom two variables profile_"ect."
Please help, been working on this for sometime and its probably an easy fix for someone experienced.

Thanks!

Hello guys,
I'm new to this forum and to Javascript. I need to make a very simple website to check whether a ticket number is valid or not. I have created an array with all the codes necessary, but when I try to loop through it, the only thing that works as it should is the first element of the array.

Basically, I want the code to display Correct!, if there is a match between user input and array, or Wrong if otherwise.

Here is my code:
Code:

<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>Untitled Document</title>
<script type="text/javascript">

function validate() {
var list = new Array;
list[0]="zDv5BXAc"; 
list[1]="6YXF3Qwj";
list[2]="k8UKpgwo";
var code= document.getElementById("code");
var name = document.getElementById("name");

for(var i=list.length-1; i>=0; --i) {
	if (code.value == list[i])
	{
		document.all.confirm.innerHTML = "Correct"
	}
	else
		document.all.confirm.innerHTML = "Wrong"
	}
}
</script>

</head>

<body>
<input name="Name" type="text" id="name" size="50">
<input name="Code" type="text" id="code" size="10">
<input name="Check Code" type="submit" value="Verify" onClick="validate()">
<div id="confirm"></div>
</body>
</html>

Hello, I very new to this language and I still feel like I'm not grasping it... But, anyways, I'm doing a thing for school and I have to let the user input a string. I need to save the string and turn it into an array. For every word that is less than five letters I put "little" at the beginning of the word and for every word that is more than five letters I put "big" at the end of each word. Then I need to return the new string into output. I think I wrote the code really incorrectly, so any tips/advice would be much appreciated! Also, I don't understand adding user input into a code if that makes sense. The tutorials/lessons I've been looking at all say to put information into an array first and then mess with it. But, what if you don't have information in the array until the user puts it in? And once they enter it, then you mess with what they entered. I can't seem to get how to do that. Thank you for your time

Code:

function texter(newText){
	var oldHTML = document.getElementById('outputPrompt').innerHTML;
	document.getElementById('outputPrompt').innerHTML = newText+"<br />"+oldHTML;
	console.log(newText);
}

function menuTwo(){
	var userInput = document.getElementById('input').value;
	var correctedInputArray = userInput.toLowerCase().split(" ");
	var mainTwo = new Array([""]);
	for(var i=0; i<correctedInputArray.length; i++){
	var thisWord = correctedInputArray[i];
	var lessFive = 5;
	var moreFive = 6;
	var restOfWord;
	if(lessFive<5){
	mainTwo[i]=thisWord+"-little";
	}else if(moreFive>6){
	mainTwo[i]="big-"+thisWord;
	}
	else{
			
			restOfWord = thisWord.substr(1, thisWord.length-1);
		
		}	
	}
	output = mainTwo.join(" ");
	texter(output);
	}
	
</script>
</head>

<body>
<h1>Document</h1>
<input type='text' id='input'	/>
<input type='button' onclick='menuTwo()' value='submit'/>
<p id='outputPrompt'>Please enter 1,2,3 or exit only</b> </p> 
</body>
</html>

Hi there coding friends,

im stuck again this time on arrays.. Im trying to get my head around it and im sure it's one of those things you do once you know what your doing (to an extent)

now the problem is... i have 2 arrays for a experiment one = flowerheight and the other is flowernumbers.

now the height is set out as 15,16,17,18,19
and numbers 2,1,6,4,2

what the aim is in the first part is to times the height by numbers of the corresponding array ie. 15x2 16x1 17x6 18x4 19x2 to make a 3rd array with them as the totals


then the second part of the program is to calculate the average height i.e total of total of numbers array (2+1+6+4+2) + total of 3rd array(15x2+16x1+17x6+18x4+19x2) then a write to show what the total was..


now all I have of the code is...

Code:

<HTML>
<HEAD>
<TITLE>
Flower Experiment
</TITLE>

<SCRIPT LANGUAGE = "JavaScript">
 /* 
   * Program to calculate average height of flowers.. 
   */

//Experiment results 
var flowerHeights = [15,16,17,18,19];
var flowerNumbers = [2,1,6,4,2];


//Write code to work out and show flowerheightxnumbers.


//Write code to calculate the average height of the flowers (total of flowernumbers + (flowerheight X numbers) and write it out in the browser window.

</SCRIPT>

</HEAD>
<BODY>
</BODY>
</HTML>

now I have no idea how to go about this it's making me loose my mind. Can someone start me off in the right directon and/or explain to me what to do.

Anyhelp much appreciated, I wish I could have done more to the question to make it easier for you lot to help me but my brain is frazzled

Thanks.
James

I have two known methods of creating a javascript array:

1) Double brackets such as:

Code:

var animation_JD = [[]];

2) Create and array then create an array inside each array element manually which is the most common method as far as I know.


The problem is that the second method requires the array be be defined in size and I require a 2D array, 3D array and 4D array. Using the second method uses far to much memory to be plausible, unless there is a way to make arrays smaller by defining parts of them as integers only?

Otherwise for the 1st method I described I don't know how to loop through all elements of the array such as:

Code:

for(group in animation_JD){

}

So does anyone have another way of creating arrays, defining an array as integers only(ideally not every part of the array) to save memory, or a way to loop through arrays created in the first method?

Thanks!

I'm trying to do this using numerical arrays for an assignment:

Create a webpage with three select boxes. If basketball is selected in the first select box, the second select box should display the names Celtics, Lakers, and Bulls. If Celtics is selected from the second select box, the third select box should display the names Larry Bird, Bill Russell, and Kevin McHale.

I think i have a good start but i can't seem to get the fields to automatically populate with the players. This has to be done solely with JavaScript. Any help would be greatly appreciated?


<html>

<head>
<script type="text/javascript">
<!--

var teams = new Array()

teams[1] = new Array()
teams[1][0] = "Celtics"
teams[1][1] = "Lakers"
teams[1][2] = "Bulls"

teams[2] = new Array()
teams[2][0] = "Yankees"
teams[2][1] = "Cardinals"
teams[2][2] = "Reds"

var basketball = new Array()

basketball[0] = new Array()
basketball[0][0] = "Larry Bird"
basketball[0][1] = "Bill Russell"
basketball[0][2] = "Kevin McHale"

basketball[1] = new Array()
basketball[1][0] = "Wilt Chamberlain"
basketball[1][1] = "Jerry West"
basketball[1][2] = "Magic Johnson"

basketball[2] = new Array()
basketball[2][0] = "Micheal Jordan"
basketball[2][1] = "Scottie Pippen"
basketball[2][2] = "Dennis Rodman"


var baseball = new Array()

baseball[0] = new Array()
baseball[0][0] = "Babe Ruth"
baseball[0][1] = "Joe DiMaggio"
baseball[0][2] = "Mickey Mantle"

baseball[1] = new Array()
baseball[1][0] = "Mark McGuire"
baseball[1][1] = "Ozzie Smith"
baseball[1][2] = "Willie McGee"

baseball[2] = new Array()
baseball[2][0] = "Pete Rose"
baseball[2][1] = "Johnny Bench"
baseball[2][2] = "Joe Morgan"


function fillTeams()
{
var whichIndex = document.getElementById("theSport").selectedIndex
var numberOfTeams = teams[whichIndex].length
for(i=0;i < numberOfTeams; i++){
document.getElementById("theTeams").options[i].text = teams[whichIndex][i]
}
}

function fillPlayers()
{
var whichIndex = document.getElementById("theTeams").selectedIndex
if(document.getElementById("theTeams").selectedIndex=="basketball")
var numberOfPlayers = teams[teams[whichIndex]].length
for(i=0;i < numberOfPlayers; i++)
{
document.getElementById("thePlayers").options[i].text = basketball[teams[whichIndex]][i]
}
else if(document.getElementById("theTeams").selectedIndex =="baseball")
for(i=0;i < numberOfPlayers; i++)
{
document.getElementById("thePlayers").options[i].text = basketball[teams[whichIndex]][i]
}
}

//-->
</script>
</head>

<body>

<form>
<select id="theSport" onChange="fillTeams()">
<option>Choose a Sport</option>
<option>Basketball</option>
<option> Baseball </option>
</select>
<select id="theTeams" onChange="fillPlayers()">
<option>................</option>
<option></option>
<option></option>
</select>
<select id="thePlayers" size="3">
<option> ...............</option>
<option></option>
<option></option>
</select>
</form>

</body>

</html>