I have an array containing 100 different values. How would I randomly pick 25 of them for display? For now I do: for (var i=0; i<markers.length && i<25; i++) {
html += markers[i].name + '<br />';
}
Which of course returns 25 values but always in the same order which is not what I want. PS. My array could also contain only 20 values, in which case I would like the function to display the 20 values randomly sorted.
Code:
<html>
<head>
<script type="text/javascript">
[code]...
how to call the values at random in the arrays: article, noun, verb, preposition ?
function read()
{
var numbers = new Array();
for (i = 0; i < field.length; i++)
numbers[i] = document.test.checkboxName.value;
var counter=0;
[Code]...
I want to read the values of the checkboxs and store the vlaues into an array (there are more than 1 checkboxs) the form name is text and the names of the check box = checkboxname
Decided to start learning JavaScript, started 2 days ago. Anyway, I'm trying to create a simple script spits out a styled result based on a user input. code...
The problem is that nothing is happening when I press the calculation button.
What I would like to happen is to display a div element for each value in the array which displays the entered value from VenCost2, the current Margin %, and the result of VenCost2 * margin%. I want this to display on the same page and underneath the calculation button, preferably not having to reload the page.
trying to fix this code up to display the following line at the end:The maximum distance was 6km run on Tue and Fri (the word 'and' not required)So far I have got it to only describe Tue and it stops before it gets to Fri and i have no idea how to get it to write it out in any case.The code also has to work if you comment the lines 22 and 23 where it should display the line The maximum distance was 5km run on Frisorry for simplistic code im very new to javascript!
<HTML>
<HEAD>
<TITLE>
[code]....
I've looked for a solution to this issue, but it seems like a little different scenario than other situations. I made a system for generating friend requests on Facebook. I have a grid that is 6 x 3, for a total of 18 cells. Each cell has a picture in it, and the picture is linked to the Facebook friend request page. My problem is that since each cell is populated at random from the array, I'm getting lots of repeats. For example, some picutures are in 5 cells, and some are in none. I'm trying to figure out how to make it so that once a picture is used once in the grid, it does not get used again in the same grid.I still want every cell filled at random on each page load, I just want to prevent the repeating.
Here's my current code:
<script type="text/javascript">
var vip_list=new Array(
new Array('http://profile.ak.fbcdn.net/v225/1616/88/s1220771654_2158.jpg','http://www.facebook.com/addfriend.php?id=1220771654'),
new Array('http://profile.ak.fbcdn.net/v223/1233/29/s904885342_9055.jpg','http://www.facebook.com/addfriend.php?id=904885342'),
[Code]...
I'd like to reorganize the third, fourth, fifth and sixth, as well as any
elements thereafter in an array in random order:
var a = new Array('first','second','third','fourth','fifth','s ixth','etc')
In other words, the first, second and third element should remain in
position 0, 1 and 2, while the fourth, fifth and sixth, etc. should appear
in random order.
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]....
This one is throwing me off! Either I am making a stupid mistake or I'm doing it totally wrong I have an array, and I am trying to select unique values from it and assign it to another array. Here is the code:
Code:
var flag;
for (i=0;i<=pdfs.length-1;i++)
{
flag = 1;
for (j=0;j<=pdfs2.length-1;j++)
[Code]...
The problem is that the if (pdfs2[j] == pdfs[i]) statement ends up never being true. There are URL's to pdf files in the array. On the other side, if there is a much easier way to select unique values from an array, please feel free to point it out.
I have the following array:
I would like to add up the common values so add all values of Android into one array so it becomes something like this: [["Android", 92]....]
I new to javascript. I want to generate 50 random numbers between 1 and 500 and store in a database. Is there a way to do it using javascript and SQL?
View 14 Replies View Relatedi have the simple code below to display a random image; how can i modify this line to place the random image at 225px wide by 141px high?
Code JavaScript:
document.getElementById("highlight_1").src = randomimage1;
In http:www.dreaminco...wtopic51264.htm a code was proposed for generating a random number within an array and then printing it into the html document using document.write.Is it possible to go one step ahead and feeding the result into an html href function? [code]is the random array member generated by the javascript.
View 3 Replies View RelatedI am trying to write a function that will take a random array as a var and split it into two arrays. My problem is I don't know how to show the split. I need to cut the array at the mid index. How do i write that so no matter what the length is the middle of the index is selected. I have wrote some code but the if isnt working and the var to set the two array lengths is not right Code:
[Code]....
Im just trying to display a random div on load.
I have adapted someone elses code to try and make it work for divs (was originally for changing background) the divs are both hidden on load
$(document).ready(function(){
var randomNum = Math.ceil(Math.random()*2);
var number = null; $.each([1,2], function(){
[Code]....
I have a Javascript which I'm using to display one of four Flash SWF files randomly. These need to be actually displayed twice, so I'm basically calling the script twice.This works great aside from one thing- occasionally the same movie appears in both scripts, for example the first instance picks movie 3 of 4 and th second instance does the same.What I need is to somehow make sure that if the first instance of the script picks movie x then the second script will pick any movie EXCEPT movie x.
This is the script as it stands:
<script language="JavaScript">
// Generate a Random Number
var randomnumber = Math.round(Math.random()*3);
[code].....
I am working on a web page where a random picture is displayed at each visit to the site. One requirement of the page is that it also works for users who have javascripts disabled.
I put a default picture in the page that get's swapped using an onLoad function. That works great for the javascript disabled browser because it just shows that default picture. However, when the page loads for users who do have javascripts enabled, they will see the default picture quickly change into the new random picture. It looks glitchy.
I've been trying to think of another approach where it will be seemless for either kind of viewer. Any ideas? Code:
I trying to display a random number using innerHTML
Here's my code:
HTML Code:
<html>
<head>
<script language="JavaScript">
[Code].....
how to display random text automatically with out refreshing webpage using java script...
View 9 Replies View RelatedI am trying to display a random number, but each time a button is pressed that calls the test function, i don't want to random number to be repeated. I know I have to declare 2 variables and a while loop, but i'm stuck as to what to put in the second variable and in the while loop.
var random = Math.floor(Q * Math.random());
var random2 = ??
function test () {
document.write(random);
while (random == random2) {
document.write(random);
}}
I'm hoping this is possible or that there is an easier way to do this. I'm having an issue with displaying data from one array that contains information about users in a table that is controlled by a different array.Is it possible to do this or is this use of arrays to display the data the wrong approach?
The table is located on one webpage, I simply want to extract one piece of information that I have placed in the initial array as part of the login script that contains user information (for validation for login etc) and display it in a table on the new webpage that is opened as a result of successful validation of the user details. I'm completely stumped and after many attempts I just can't seem to get it to work.
This statement is to produce a random integer within a specified range. I get the desired result when passing the values within a function like this:
Code:
<html>
<script type="text/javascript">
function get_randomRange(low,high){
[code]...
the results form the second example look like the number are possibly being multiplied somewhere? why does the first example work and the second not?
I have some image URLs stored in an array. I then want to be able to print out one of those image URLs randomly on page load. What would be the best method to do this in jQuery?
[Code]...
I am learning Javascript from this book I got, and I am trying to do one of the "challenges" in the Hangman example, and that is to add on more 8 letter words to it and have it select by random. I am assuming that it's asking me to do this with arrays, but I have no idea how to implement that on this while having it select randomly.
<html>
<head>
<title>Hangman</title>
<script language="JavaScript" type="text/javascript">
</script>
</head>
[Code]...
So, I am attempting to select a random entry from an array, and then make it so that particular entry will not be selected again until every entry has been selected. Basically, I don't want to see any of the same entries, until all of the entries in the array have been selected.
So if this were my array....
keywords =
[
"ppc",
"games",
[Code]....
since meta was selected a second time before everything had been selected once.
I would like to see something more like
meta, advertise, gaming,ppc, welcome, home, games, advertise, ppc, since this did not select any entry multiple times before every entry had been randomly selected.( the second loop started at the second "advertise" in case you didn't catch the differences.
But as you can see from the code that I have posted above, I do not know how to do this. I have seen examples where the entries that were randomly selected, were actually deleted from the array entirely but this is not what I want to do. I just want every entry to be selected once, and then for the process to be restarted.
does anyone know how to scramble the "box#" in the codes below? Ultimately, I want the checkboxes to be in different order each time I access the web page?
<script lanugage="javascript">
function countChoices(obj) {
max = 3; // max. number allowed at a time
box1 = obj.form.box1.checked; // your checkboxes here
box2 = obj.form.box2.checked;
box3 = obj.form.box3.checked; // add more if necessary
box4 = obj.form.box4.checked;
box5 = obj.form.box5.checked;
count = (box1 ? 1 : 0) + (box2 ? 1 : 0) + (box3 ? 1 : 0) + (box4 ? 1 : 0) + (box5 ? 1 : 0);
if (count > max) {
alert("You can only choose " + max + " of the 5 nominees.");
obj.checked = false;
}
}
</script>
<form>
<input type=checkbox name=box1 onClick="countChoices(this)"> Homer Simpsons <p>
<input type=checkbox name=box2 onClick="countChoices(this)"> Ground's Keeper Willie <p>
<input type=checkbox name=box3 onClick="countChoices(this)"> Mr. Burns <p>
<input type=checkbox name=box4 onClick="countChoices(this)"> Barney <p>
<input type=checkbox name=box5 onClick="countChoices(this)"> Chief Wiggum<p>
</form>