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JavaScript - How To Prevent Repeating In A Random (math.random) Array?
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: 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'),
new Array('http://profile.ak.fbcdn.net/v229/1574/66/s1752031238_626.jpg','http://www.facebook.com/addfriend.php?id=1752031238'),
new Array('http://profile.ak.fbcdn.net/v223/768/71/n661155042_7325.jpg','http://www.facebook.com/addfriend.php?id=661155042'),
new Array('http://profile.ak.fbcdn.net/v226/732/26/n1827289885_2478.jpg','http://www.facebook.com/addfriend.php?id=1827289885'),
new Array('http://profile.ak.fbcdn.net/v229/1631/70/s1425313768_1140.jpg','http://www.facebook.com/addfriend.php?id=1425313768'),
new Array('http://static.ak.fbcdn.net/pics/s_silhouette.jpg','http://www.facebook.com/addfriend.php?id=1667023416'),
new Array('http://profile.ak.fbcdn.net/v225/1146/29/s506485704_9532.jpg','http://www.facebook.com/addfriend.php?id=506485704'),
new Array('http://profile.ak.fbcdn.net/profile6/270/32/s692160490_8745.jpg','http://www.facebook.com/addfriend.php?id=692160490'),
new Array('http://profile.ak.fbcdn.net/v229/114/83/s1218176198_7375.jpg','http://www.facebook.com/addfriend.php?id=1218176198'),
new Array('http://profile.ak.fbcdn.net/v226/946/4/s1470171885_4973.jpg','http://www.facebook.com/addfriend.php?id=1470171885'),
new Array('http://static.ak.fbcdn.net/pics/s_silhouette.jpg','http://www.facebook.com/addfriend.php?id=1329505888'),
new Array('http://static.ak.fbcdn.net/pics/s_silhouette.jpg','http://www.facebook.com/addfriend.php?id=1325496968'),
new Array('http://profile.ak.fbcdn.net/v223/1546/92/s1536913202_2017.jpg','http://www.facebook.com/addfriend.php?id=1536913202'),
new Array('http://static.ak.fbcdn.net/pics/s_silhouette.jpg','http://www.facebook.com/addfriend.php?id=1624715433'),
new Array('http://profile.ak.fbcdn.net/v228/1282/58/s713998257_3682.jpg','http://www.facebook.com/addfriend.php?id=713998257')
);
var chosen_vip=Math.floor(vip_list.length*Math.random());
var chosen_vip1=Math.floor(vip_list.length*Math.random());
var chosen_vip2=Math.floor(vip_list.length*Math.random());
var chosen_vip3=Math.floor(vip_list.length*Math.random());
var chosen_vip4=Math.floor(vip_list.length*Math.random());
var chosen_vip5=Math.floor(vip_list.length*Math.random());
var chosen_vip6=Math.floor(vip_list.length*Math.random());
var chosen_vip7=Math.floor(vip_list.length*Math.random());
var chosen_vip8=Math.floor(vip_list.length*Math.random());
var chosen_vip9=Math.floor(vip_list.length*Math.random());
var chosen_vip10=Math.floor(vip_list.length*Math.random());
var chosen_vip11=Math.floor(vip_list.length*Math.random());
var chosen_vip12=Math.floor(vip_list.length*Math.random());
var chosen_vip13=Math.floor(vip_list.length*Math.random());
var chosen_vip14=Math.floor(vip_list.length*Math.random());
var chosen_vip15=Math.floor(vip_list.length*Math.random());
var chosen_vip16=Math.floor(vip_list.length*Math.random());
var chosen_vip17=Math.floor(vip_list.length*Math.random());
document.write('<center>');
document.write('<a href="',vip_list[chosen_vip][1],'" target="_blank"><img src="',vip_list[chosen_vip][0],'" height="60" width="60"></a>');
document.write('<a href="',vip_list[chosen_vip1][1],'" target="_blank"><img src="',vip_list[chosen_vip1][0],'" height="60" width="60"></a>');
document.write('<a href="',vip_list[chosen_vip2][1],'" target="_blank"><img src="',vip_list[chosen_vip2][0],'" height="60" width="60"></a>');
document.write('<a href="',vip_list[chosen_vip3][1],'" target="_blank"><img src="',vip_list[chosen_vip3][0],'" height="60" width="60"></a>');
document.write('<a href="',vip_list[chosen_vip4][1],'" target="_blank"><img src="',vip_list[chosen_vip4][0],'" height="60" width="60"></a>');
document.write('<a href="',vip_list[chosen_vip5][1],'" target="_blank"><img src="',vip_list[chosen_vip5][0],'" height="60" width="60"></a>');
document.write('<br>');
document.write('<a href="',vip_list[chosen_vip6][1],'" target="_blank"><img src="',vip_list[chosen_vip6][0],'" height="60" width="60"></a>');
document.write('<a href="',vip_list[chosen_vip7][1],'" target="_blank"><img src="',vip_list[chosen_vip7][0],'" height="60" width="60"></a>');
document.write('<a href="',vip_list[chosen_vip8][1],'" target="_blank"><img src="',vip_list[chosen_vip8][0],'" height="60" width="60"></a>');
document.write('<a href="',vip_list[chosen_vip9][1],'" target="_blank"><img src="',vip_list[chosen_vip9][0],'" height="60" width="60"></a>');
document.write('<a href="',vip_list[chosen_vip10][1],'" target="_blank"><img src="',vip_list[chosen_vip10][0],'" height="60" width="60"></a>');
document.write('<a href="',vip_list[chosen_vip11][1],'" target="_blank"><img src="',vip_list[chosen_vip11][0],'" height="60" width="60"></a>');
document.write('<br>');
document.write('<a href="',vip_list[chosen_vip12][1],'" target="_blank"><img src="',vip_list[chosen_vip12][0],'" height="60" width="60"></a>');
document.write('<a href="',vip_list[chosen_vip13][1],'" target="_blank"><img src="',vip_list[chosen_vip13][0],'" height="60" width="60"></a>');
document.write('<a href="',vip_list[chosen_vip14][1],'" target="_blank"><img src="',vip_list[chosen_vip14][0],'" height="60" width="60"></a>');
document.write('<a href="',vip_list[chosen_vip15][1],'" target="_blank"><img src="',vip_list[chosen_vip15][0],'" height="60" width="60"></a>');
document.write('<a href="',vip_list[chosen_vip16][1],'" target="_blank"><img src="',vip_list[chosen_vip16][0],'" height="60" width="60"></a>');
document.write('<a href="',vip_list[chosen_vip17][1],'" target="_blank"><img src="',vip_list[chosen_vip17][0],'" height="60" width="60"></a>');
document.write('<br>');
</script>
Any suggestions? Thank you! Similar TutorialsHi guys, Could do with a bit of help! I've found this code elsewhere and am currently using it to load 5 random pages that automatically refresh to another in the array after 10 seconds. This works great. But is there a way of altering this code so it doesn't repeat any of the pages - atleast until it's displayed each page once? At the moment it can display 'page5' 3 or 4 times before I even see 'page2' for example - which is annoying! Code: <script type="text/javascript">
<!--
Array.prototype.random = function () {return this[Math.floor(Math.random() * this.length)]}
Date.ONE_SECOND = 1000;
url =
['page1.html', 'page2.html', 'page3.html', 'page4.html', 'page5.html',]
setTimeout('location = url.random()', 10 * Date.ONE_SECOND)
// -->
</script>
I'm very new to all this, so I aplogise if this is all very obvious! Hi I'm new to this and would like some help. I want to display 4 random images and I would like to get them to NOT repeat themselves. Any suggestions? So if image one is randomly selected as "aceclubs.png" I don't want image two to be the same and so on for the other images. This currently the code I'm using right now. I've been duplicating this function with different names for each of the 4 images. However it sometimes produces two of the same image and I don't want that. Code: function random_ace()
{
var cardace = new Array(4)
cardace[0] = "aceclubs.png";
cardace[1] = "acediamonds.png";
cardace[2] = "acehearts.png";
cardace[3] = "acespades.png";
var randomace = Math.floor(Math.random()*cardace.length);
var ace = cardace[randomace];
card1.src=ace
}
hey. im working on a facebook app.. this is what i got so far. PHP Code: <script language="JavaScript"> <!-- var theImages = new Array() theImages[0] = "http://img688.imageshack.us/img688/4787/logo1tq.jpg" theImages[1] = "http://img641.imageshack.us/img641/8292/logo2yex.jpg" theImages[2] = "http://img864.imageshack.us/img864/4097/logo3ik.jpg" theImages[3] = "http://img543.imageshack.us/img543/9046/logo4pu.jpg" theImages[4] = "http://img21.imageshack.us/img21/2567/logo5q.jpg" theImages[5] = "http://img842.imageshack.us/img842/696/logo6o.jpg" theImages[6] = "http://img85.imageshack.us/img85/7831/logo7k.jpg" var j = 0 var p = theImages.length; var preBuffer = new Array() for (i = 0; i < p; i++){ preBuffer[i] = new Image() preBuffer[i].src = theImages[i] } var whichImage = Math.round(Math.random()*(p-1)); function showImage(){ document.write('<img src="'+theImages[whichImage]+'">'); } //--> </script> <script language="JavaScript"> <!-- showImage(); //--> </script> now i want that the app posts the random image automaticlly to the useres timeline.. for example: if the random image is theImages [3] then it should post the image theimage [3] to the users timeline.. i see alot of facebook apps doing this.. thanks in advance Random non-repeating images script. Hope this helps someone... you can see an example at http://www.empireelite.org/. Refresh and you'll see the PS3 boxarts on the top left will show randomly, with no repeats. In your html page in head tag Code: <style>
img.boxart{
margin:0;
border: none;
display:block;
float:left}</style>
<script type="text/javascript" src="ps3boxart.js"></script>
in body tag (place whereever in the body you want the pictures to show) Code: <script type="text/javascript"> randomorder(ps3ba, '') </script> In a seperate .js file in the same folder (this one I have as ps3boxart.js) Code: var ps3ba=new Array()
ps3ba[0]='<a href="http://www.amazon.com/God-War-III-Playstation-3/dp/B000ZK9QCS/ref=sr_1_1?ie=UTF8&s=videogames&qid=1261056951&sr=8-1"><img src="http://www.empireelite.org/images/boxart/ps3/mini/gow3.jpg" class="boxart" title="God of War III"></a>'
ps3ba[1]='<a href="http://www.amazon.com/Heavy-Rain-Playstation-3/dp/B002CZ38KA/ref=sr_1_1?ie=UTF8&s=videogames&qid=1261059415&sr=1-1"><img src="http://www.empireelite.org/images/boxart/ps3/mini/hr.jpg" class="boxart" title="Heavy Rain"></a>'
ps3ba[2]='<a href="http://www.amazon.com/Killzone-2-Playstation-3/dp/B000FQBF1M/ref=sr_1_1?ie=UTF8&s=videogames&qid=1261059510&sr=1-1"><img src="http://www.empireelite.org/images/boxart/ps3/mini/kz2.jpg" class="boxart" title="Killzone 2"></a>'
ps3ba[3]='<a href="http://www.amazon.com/LittleBigPlanet-Game-Year-Playstation-3/dp/B002ELCUUG/ref=sr_1_1?ie=UTF8&s=videogames&qid=1261059556&sr=1-1"><img src="http://www.empireelite.org/images/boxart/ps3/mini/lbp.jpg" class="boxart" title="LittleBigPlanet"></a>'
ps3ba[4]='<a href="http://www.amazon.com/Metal-Gear-Solid-Patriots-Playstation-3/dp/B000FQ2D5E/ref=sr_1_1?ie=UTF8&s=videogames&qid=1261059605&sr=1-1"><img src="http://www.empireelite.org/images/boxart/ps3/mini/mgs4.jpg" class="boxart" title="Metal Gear Solid 4"></a>'
ps3ba[5]='<a href="http://www.amazon.com/Ratchet-Clank-Future-Crack-Playstation-3/dp/B00275A7LI/ref=sr_1_1?ie=UTF8&s=videogames&qid=1261059662&sr=1-1"><img src="http://www.empireelite.org/images/boxart/ps3/mini/rcfacit.jpg" class="boxart" title="Ratchet & Clank Futu A Crack In Time"></a>'
ps3ba[6]='<a href="http://www.amazon.com/Resistance-Fall-Man-playstation-3/dp/B000JLIXIG/ref=sr_1_1?ie=UTF8&s=videogames&qid=1261059703&sr=1-1"><img src="http://www.empireelite.org/images/boxart/ps3/mini/rfom.jpg" class="boxart" title="Resistance: Fall of Man"></a>'
ps3ba[7]='<a href="http://www.amazon.com/Uncharted-Drakes-Fortune-Playstation-3/dp/B000UW21A0/ref=sr_1_2?ie=UTF8&s=videogames&qid=1261059750&sr=1-2"><img src="http://www.empireelite.org/images/boxart/ps3/mini/uc.jpg" class="boxart" title="Uncharted: Drakes Fortune"></a>'
ps3ba[8]='<a href="http://www.amazon.com/Uncharted-2-Among-Thieves-Playstation-3/dp/B001JKTC9A/ref=sr_1_1?ie=UTF8&s=videogames&qid=1261059750&sr=1-1"><img src="http://www.empireelite.org/images/boxart/ps3/mini/uc2.jpg" class="boxart" title="Uncharted 2: Among Thieves"></a>'
function randomorder(targetarray) {
var randomorder=new Array()
var the_one
var z=0
for (i=0;i<targetarray.length;i++)
randomorder[i]=i
while (z<targetarray.length) {
the_one=Math.floor(Math.random()*targetarray.length)
if (targetarray[the_one]!="_selected!"){
document.write(targetarray[the_one])
targetarray[the_one]="_selected!"
z++
}
}
}
Then obviously, you would use this as a baseline and change your .js file name to whatever your pictures are for, like ads.js or whichever. Change the links in ahref to whereever you want each page to link. Change the image locations in img src to whereever your images are saved. Remember, where it says var z=0... this is where you hide extra random images. For example, my 200px cell only fits 9 22px wide images (they equal 198px). I only have 9 in my ps3 boxart image folder. If I want 50 in there... I would upload the pics to the folder with the other ones, add them to the list in the .js file. Such as ps3ba[9]=, ps3ba[10]=, etc. up to [49] (49 + 1 for [0] = 50). Then since I can only fit 9 in my cell, I would have to change the variable to var z=41 (to hide 41 of them and only show 9). Hope this helps somebody. Good luck. I'm using the script below in a custom HTML to generate a random line of text (not with the text shown here). This works fine BUT; I want it to go randomly through the WHOLE list without repeating lines that already have been printed. As it is now, a line of text might be printed several times in a row, which is a little annoying. I'm using a refresh button for generating a new line of text. Alternatively, How can I just make it display in the order shown and just re-arrange the content so it seems random to the user? Random would the best though... Any ideas?? : ) Code: <script language="JavaScript"> <!-- var r_text = new Array (); r_text[0] = "All the leaves are brown"; r_text[1] = "And the sky is grey"; r_text[2] = "I've been for a walk"; r_text[3] = "On a winter's day"; r_text[4] = "I'd be safe and warm"; r_text[5] = "If I was in L.A."; r_text[6] = "California dreaming, On such a winter's day"; var i = Math.floor(7*Math.random()) document.write(r_text[i]); //--> </script> I'm a newby that just finished an online javascript course. When I do a search on Math.random() I receive sites that all describe the command as returning a number 'between 0 and 1'. My question is - are the expected numbers limited to - 0.0000000000000001 thru 0.9999999999999999 or is it possible to get the 0 and 1 also. Seems like the definition should be 'from 0 thru 1' rather than 'between 0 and 1'. JoeF Hello, I'm new here so.. hi! You'll probably be seeing me a lot. Anyways here's my questions. I am trying to get a function to draw 5 randomly sized and colored rectangles nested within each other. Meaning each rectangle should not go outside the boundaries of the rectangle it is in. The color thing I've got down in a randomColor() function. It's the nesting rectangles inside rectangles that is confusing me (hense me being up for the past 4 hours trying to understand it) I started out with very simple code just making 5 rectangles of reducing sizes nested in each other, then added the Math.random to randomize all the sizes. Now I'm at this point and have lost my way. Please help, or maybe there is just an easier way. I added a bunch of comments in my code so maybe you'll understand what I'm trying to do. Code: function rect() { // rectangle generator
autoctx.clearRect(0, 0, 400, 400); // clear canvas
// declare variables
var x;
var y;
var width;
var height;
var i = 0; // counter
// create random x,y coordinates
x = Math.round(Math.random() * 100);
y = Math.round(Math.random() * 100);
do { // create random size rectangle
width = Math.round(Math.random() * 400);
height = Math.round(Math.random() * 400);
} while (width < 100 || height < 100); // make sure rectangle is big enough
autoctx.fillStyle = randomColor(); // Runs random color generator
autoctx.fillRect(x, y, width, height); // fill first rectangle
do {
x += (Math.round(Math.random() * 15)); // choose new random coordinates within previous rectangle
y += (Math.round(Math.random() * 15)); // choose new random coordinates within previous rectangle
//*********** KEEPS RECTANGLE HEIGHT AND WIDTHS FROM BEING A NEGATIVE NUMBER ***********//
do { //*** WIDTH TESTER ***// validates width to be within previous rectangles width
var testW = 0; // new width tester variable
testW = width - (Math.round(Math.random() * (2 * x))); // store test width
if (testW > 0) {
width = testW; // if test width > 0 store in width
}
} while (testW < 0); // if test width < 0 continue loop
do { //*** HEIGHT TESTER ***// validates height to be within previous rectangles height
var testH = 0; // create height testing variable
testH = height - (Math.round(Math.random() * (2 * y))); // calculate new test height
if (testH > 0) { // if test height is > 0
height = testH; // store as height
}
} while (testH < 0); // if test height < 0 try again
//*** Fills final rectangle values ***//
autoctx.fillStyle = randomColor(); // Runs random color generator
autoctx.fillRect(x, y, width, height);
i++; // add 1 to counter
} while (i < 4); // kick out of loop after the 5th rectangle
}
thanks guys I hope I'm not too confusing or anything, any help would be greatly appreciated! What I am doing is working on a shooting app that will randomly call out different targets to shoot. I have it so it will randomly organize them but I need it so it pulls a single one. Any help would be appreciated! Code: <html>
<body>
<p id="demo">Click the Button to Call out a target</p>
<button onclick="myFunction()">Call Out</button>
<script type="text/javascript">
function myFunction()
{
var myarray=["red","blue", "yellow", "orange"]
myarray.sort(function() {return 0.5 - Math.random()})
var x=document.getElementById("demo");
x.innerHTML=myarray;
}
</script>
</body>
</html>
Hi, please look at: http://bit.ly/hO5VBE then click 'play app match' you'll see the images are taken from the first 15 in an array, then doubled and randomized. however, i want the the images taken to be a random selection from an array of 15+ images. so the array would be e.g. 25 images, and i want any 15 of those 25 to be chosen (then doubled and randomized) rather than the first 15 taken. any help would be great! James p.s. if you load the main page while hovering over an icon, its tooltip will be "undefined".. any ideas to stop this? Thanks! I am taking a Javascript class and the teacher assigned this: Quote: Write a script that uses a random number generation to create sentences and name it sentences.html. Use five arrays of strings called: uppercase article (uarticle), noun, verb, lowercase article (larticle), and preposition. You will need to use the correct case for the article arrays. Create a sentence by selecting a word at random from each array in the following order: uarticle, noun, verb, preposition, larticle, noun. You can find examples of generating random numbers in both Fig. 8.6 (dice-rolling) and Fig. 8.7 (random image) of Chapter 8. The arrays should be filled at minimum, as follows: the article array(s) should contain the articles: the, a, one, some and any. The noun array should contain the nouns: boy, girl, dog, town and car. The verb array should contain the verbs: drove, jumped, ran, walked, and skipped. The preposition array should contain the prepositions: to, from, over, under and on. If you would like to add more words, adjust the arrays appropriately. As each word is picked, concatenate it to the previous words in the sentence. The words should be separated by spaces. When the final sentence is output, it should start with a capital letter and end with a period. The program should generate 20 sentences and output them to the screen (document.write or document.writeln). You should use a for loop similarly to the one used in Fig. 8.6 in order to get it to print 20 times. I haven't gotten to the loop yet, I'm just working on the random sentence first. Here is what I have: Code: <script type="text/javascript">
<!--
uarticle = new Array("The", "A", "One", "Some", "Any");
noun = new Array("boy", "girl", "dog", "town", "car");
verb = new Array("drove", "jumped", "ran", "walked", "skipped");
larticle = new Array("the", "a", "one", "some", "any");
preposition = new Array("to", "from", "over", "under", "on");
var rand1 = [Math.floor ( Math.random() * uarticle.length )];
var rand2 = [Math.floor ( Math.random() * noun.length )];
var rand3 = [Math.floor ( Math.random() * verb.length )];
var rand4 = [Math.floor ( Math.random() * larticle.length )];
var rand5 = [Math.floor ( Math.random() * preposition.length )];
document.write(uarticle[rand2] + " " + noun[rand2] + " " + verb[rand3] + " " + preposition[rand1] + " " + larticle[rand4] + " " + noun[rand2] + ".");
-->
</script>
Am I on the right track? How would I loop the sentences using a for statement? My array contains 15 value I want to random pick 5 value: Code: myArray[0] ="a"; myArray[1] ="b"; myArray[2] ="c"; myArray[3] ="d"; myArray[4] ="e"; myArray[5] ="f"; myArray[6] ="g"; myArray[7] ="h"; myArray[8] ="i"; myArray[9] ="j"; myArray[10] ="k"; myArray[11] ="l"; myArray[12] ="a"; myArray[13] ="b"; myArray[14] ="c"; How to random pick from all elements with no repeat of the same content. e.g. if myArray[0] is picked then myArray[12] will not be picked again. (because they have the same value "a") Hello, I have an array containing 100 different values. How would I randomly pick 25 of them for display? For now I do: PHP Code: 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. Thanks in advance! PS. My array could also contain only 20 values, in which case I would like the function to display the 20 values randomly sorted. hi I'm just new to java and I'm trying to write a script that will shuffle the information in a array with no gaps and no repeats. below is that code that i have so far. thanks ben [CODE] //constants SWAPS_TO_BE_MADE = 30; //variables var myArray = new Array('Ace',2,3,4,5,6,7,8,9,10,'Jack','Queen','King'); // the array that entities will be shuffled from var temp = 0; var outPutArray = new Array (12); var arrayLength = myArray.length; var index = 0; var swapIndex = 0; var self_swaps = 0; var counter = 0; temp=myArray[swapIndex] document.write('<h1>Array shuffling</h1>'); document.write('<p>Before shuffle: '+myArray+'</p>'); //loop while(counter < SWAPS_TO_BE_MADE) { index =Math.floor(Math.random()*arrayLength); swapIndex =Math.floor(Math.random()*arrayLength); var index_value = index; var range = 1; myArray.splice(index_value,range,'spilced'); outPutArray[swapIndex] = index; if(index == swapIndex) { self_swaps++; } counter++; index = (index + 1 % arrayLength); swapIndex= (swapIndex + 1 % arrayLength); } document.write('<p>After shuffle: '+outPutArray+'</p>'); document.write('<p>After shuffle: '+myArray+'</p>'); [ICODE] Well I have an array and a button to select a random integer from the array, how do I make it so that it selects every integer once til all are selected, then it starts over again? For example, an array has these: A B 1 2 Q F So you press the button a number of times, and you get: Q B 1 F A 2 Instead of: 1 Q A 1 B A Another homework assignment that I can't quite seem to get to work... I've been asked to do the following using javascript: -Create a function named randInt() with one parameter of "size". Declare a variable named "rNum" equal to a random integer between 1 and the value of the size variable. Return the value of the "rNum" varialbe from the function. -Create a function named getQuote() with one parameter anemd "qNum". The function should create an array named mtQuotes with five quotes; there should be no quote for the array index "0". Return the value of the mtQuotes array for the qNum index. - In the div element of "quotes" insert a script with the following commands: Declare a variable named "randValue" which is euqal to a random integer between 1 and 5 (use the randInt() function). Declare a variable named "quoteText" containing the quote whose array index value is equal to randValue. Write the value of quoteText to the web page. Here is what I have...it returns undefined. thanks. Code:
<html>
<head>
<script type="text/javascript">
function randInt(size) {
var rNum=Math.ceil(Math.random()*5);
return(rNum);
}
</script>
<script type="text/javascript">
function getQuote(qNum);
var mtQuotes = new Array();
mtQuotes[0] = "";
mtQuotes[1] = "I smoke in moderation, only one cigar at a time.";
mtQuotes[2] = "Be careful of reading health books, you might die of a misprint.";
mtQuotes[3] = "Man is the only animal that blushes or needs to.";
mtQuotes[4] = "Clothes make the man. Naked people have little or no influence on society.";
mtQuotes[5] = "One of the most striking differences between a cat and a lie is that a cat has only nine lives.";
return mtQuotes[qNum];
</script>
</head>
<body>
<div id="quotes">
<script type="text/javascript">
var randValue=randInt(5);
var quoteText=getQuote(randValue);
document.write(quoteText);
</script>
</div>
Hi. I'm working on a script that picks out a random entry in an array every 10seconds and show it to the user (using document.write). So far I've got the "Randomizer" to work like this: Code: function random(){
var nummer = Math.floor(Math.random()* tekst.length);
return nummer;
}
var tekst = new Array("Different", "Values");
and showing it like this: Code: document.write(tekst[random()]); Now, I've tried my best to implement setInterval() to give me a new random number every 10seconds, but so far without any luck... I appreciate all help! Thx in advance. Hi, I'm not much of a programmer, I have this script for randomly rotate a bunch of pictures. What do you change to make to change from one another, not random? Thanks Denny <script language="javascript"> var delay=5000 //set delay in miliseconds var curindex=0 var i = 0 var randomimages=new Array() randomimages[0]="...image01.jpg" randomimages[1]="...image02.jpg" randomimages[2]="...image03.jpg" randomimages[3]="...image04.jpg" randomimages[4]="...image05.jpg" randomimages[5]="...image05.jpg" var preload=new Array() for (n=0;n<randomimages.length;n++) { preload[n]=new Image() preload[n].src=randomimages[n] } i = Math.floor(Math.random()*(randomimages.length)) document.write('<img border=2 name="defaultimage" src="'+randomimages[i]+'">') function rotateimage() { if (curindex==(tempindex=Math.floor(Math.random()*(randomimages.length)))) { curindex=curindex==0? 1 : curindex-1 } else curindex=tempindex document.images.defaultimage.src=randomimages[curindex] } setInterval("rotateimage()",delay) </script> I can generate a random number between 1 and 9, ( var rand_no = Math.floor( 1 + Math.random() * 9 ); ) but I want to add that random number to a value that is enterred into an inputbox and get a total. How can I do this using Javascript and put the result into a hidden field. I will also need to use that same random number in another place on another form . Thanks Hi i have set up a token key to give me some extra protection against direct url access to the page but i wanted to make it random. at first i used session token but it is not set until after a page refresh on login so this has to be its own deal.. i have found several javascript random codes but how to i pass that value to the window call.. here is the window call.. as you can see right know i have it hard coded as one token all the time. i just need it random and then sha1 (or md5) Code: function url_chat(){
chatwindow = window.open("<?=$CONST_MY_ROOT?>/mychat/chat/index.php?tok=0ed61bdd3a8a86f39e6b4abd01ba4e3649d0ec1c", "chatwindow", "location=0,status=0,scrollbars=0,menubar=0,resizable=0,width=950,height=550");
}
i could use this i guess but i dont know how to get that value to the window call above. Code: document.write(Math.floor(Math.random()*999999999999999999)); This is quite easy yet hard. I'm trying to apply something in my forums, where a member could post something let's say: "Hi, I am number [random]1, 6[/random]" And what would happen is that, a number from 1 to 6 would be the content, for example, it would be: "Hi, I am number 3" But if you refresh the page, it would still be the same number. Like it won't be randomized again. So how do I make a javascript/html code that would make a one time number randomizer. |
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