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JavaScript - Sequence Of Numbers
This textbook is complete garbage, there is nothing in this thing about this topic at all. Here is the question I am trying to do: "Suppose you have a sequence of numbers
Where every number is the previous number plus 3 1, 4, 7, 10, 13, 16, 19, 22 Write a program to output the first 10 number s of the sequence. You must calculate the numbers, you cannot just hard-code them into an array." Its a question on a test study guide. Heres what I got so far: Code: <html> <head> <script type="text/javascript"> VarX = 1 i = 3 VarY = VarX + i count++ do varY while count < 10 </script> </head> <body> </body> </html> Similar TutorialsHi, I am using several Javascripts into a html file. Individually all scripts working fine, however when I put them on the onclick event someof them not works. Example: <html> <head> <script> function one; </script> <script> function two; </script> <script> function three; </script> </head> <body> <form type=post action=newfile.asp> .................... ................... ................... <input type=submit onclick="one(); two(); three();"> </form> </body> </html The schema is right? How is the best way to force many scripts working fine? Bob Hi there. I'm trying to make a little valentines website 'card' for my ladyfriend. I was going to be clever about it and use javascript, but as it turns out I'm really not that clever with it anymore. I need a single image to change into a different image on each following mouseover event. A planned 'route' of images, for exameple A -> B -> C -> D -> E -> A -> F - > B -> .. and so on. I thought I could do this, but I'm getting nowhere. I did try to look for similar attempts to make this, but it's kind of hard to find since 'mouseover' is such a generic search term. Thanks. Edit: there's little point for me in posting my code so far.. it's just a long list of imagecodes and a little mousover script that would probably make you laugh. Hi, I need some advice. I wanted to create a 4 by 4 grid in a webpage. Then i want to select a specific box in the grid to flash a certain colour. There will always be a set sequence of the same sections lighting up with the same colours. So row 2 col 2 flashes green, then row 4 col 1 flashes pink etc. With around 5 boxes being used out of 16. How would i go about doing this? Is using Javascript the best thing to use? Any advice would be greatly appreciated. Thanks. I have an autocomplete script but it's currently returning results in a character is in the name anywhere at all, what I need it to do is only return matches if the characters are in sequence only. Example of how it is now if you type S it will return: Science Host Pass What I need it to do is only return a match if the first character is an S, and so on down the line in order. So if you type sam it should only return matches where the first 3 letter are sam in the order it's typed. Here's how the regexp is now: return value.replace(new RegExp("(?![^&;]+(?!<[^<>]*)(" + term.replace(/([\^\$\(\)\[\]\{\}\*\.\+\?\|\\])/gi, "\\$1") + ")(?![^<>]*>)(?![^&;]+", "gi"), "<strong>$1</strong>"); I want the images to change in sequence when the page is refreshed not random like i have below. Can someone help me with this please? Also I also need text to change on refresh to because I am going to have a descritption of the image below. Thanks [CODE] <script type="text/javascript" language="JavaScript"> var imgs = new Array('<a href="VW_1.shtml"><img border=0 src="img/samples/VW/large_1.jpg" width=165 height=109" class="thumbnail_img">', '<a href="fortshelby1.shtml"><img border=0 src="img/samples/Fort Shelby/image1-large.jpg" width=165 height=109 class="thumbnail_img">', '<a href="jaguar1.shtml"><img border=0 src="img/samples/Jag_of_Novi/large_1.jpg" width=165 height=109 class="thumbnail_img">', '<a href="harley1.shtml"><img border=0 src="img/samples/wolverine_harley/large_1.jpg" width=165 height=109 class="thumbnail_img">', '<a href="bc1.shtml"><img border=0 src="img/samples/BC_Coney_Island/large_1.jpg" width=165 height=109 class="thumbnail_img">', '<a href="mama1.shtml"><img border=0 src="img/samples/Pozios_Retail_Mama_Vickys_Coney_Island/large_1.jpg" width=165 height=109 class="thumbnail_img">', '<a href="children1.shtml"><img border=0 src="img/samples/Detroit_Childrens_Museum/large_1.jpg" width=165 height=109 class="thumbnail_img">', '<a href="harper1.shtml"><img border=0 src="img/samples/Harper_Woods_Library/large_1.jpg" width=165 height=109 class="thumbnail_img">', '<a href="dps1.shtml"><img border=0 src="img/samples/DPS_Facilities_building/large_1.jpg" width=165 height=109 class="thumbnail_img">', '<a href="lakeland1.shtml"><img border=0 src="img/samples/Lakeland_School_Huron_Valley/large_1.jpg" width=165 height=109 class="thumbnail_img">', '<a href="auto1.shtml"><img border=0 src="img/samples/Manhattan_Auto_Group/large_1.jpg" width=165 height=109 class="thumbnail_img">', '<a href="maxey1.shtml"><img border=0 src="img/samples/Maxey_Ford/large_1.jpg" width=165 height=109 class="thumbnail_img">', '<a href="benz1.shtml"><img border=0 src="img/samples/Mercedes_Benz_of_St_Clair_Shores/large_1.jpg" width=165 height=109 class="thumbnail_img">', '<a href="metro_lofts1.shtml"><img border=0 src="img/samples/Metro_Lofts/large_1.jpg" width=165 height=109 class="thumbnail_img">', '<a href="mtclemens1.shtml"><img border=0 src="img/samples/Mt_Clemens_Library/large_1.jpg" width=165 height=109 class="thumbnail_img">', '<a href="st_gertrudes.shtml"><img border=0 src="img/samples/st_gertrudes/large_1.jpg" width=165 height=109 class="thumbnail_img">', '<a href="rayconnect1.shtml"><img border=0 src="img/samples/Rayconnect/large 1.jpg" width=165 height=109 class="thumbnail_img">', '<a href="faulhauber1.shtml"><img border=0 src="img/samples/Faulhauber/large1.jpg" width=165 height=109 class="thumbnail_img">'); var max = imgs.length; var num = Math.floor((Math.random() * max)); document.writeln(imgs[num]); </script> [CODE] I built some pages that uses a Flash widget to play mp3 files on my server and show album covers at the same time. However, for people without Flash (like iPhone/Safari), I accommodate them by using a JavaScript that offers a list of simple links to the mp3 files. What I would really like, in the case of a page where there are several songs by the same artist, is a script that when activated, will play all the files in order. Possible? Where would I look for such a script?
I have an essoteric question about javascript and how DOM/javascript stores divs that are created and displayed in succession by absolute positioning. I have a series of divs that are assigned absolute top and left values to form a grid. The grid tiles are programmed to swap coordinates in pairs when one of the pairs is clicked. Then if I do a sampling of the divs by: Code: //returns the same string on every call.
//regardless of the coordinate values. which change
var GM = document.getElementById('TP');
if(GM.hasChildNodes)
{
var GMC = GM.getElementsByTagName('div');
var str = '';
for(i = 0; i < GMC.length; i++)
{
if(GMC[i].hasChildNodes)
{
for(var j = 0; j < GMC[i].childNodes.length; j++)
{
var gmc = GMC[i].childNodes[j];
var gmcTxt = gmc.childNodes[0].data;
str += gmcTxt;
}
}
}
}
alert(str);
The list does not represent the positions of the divs as they appear in the browser, but in a sequence that is saved in another array when the divs are created. The same is true for document.getElementById('[id assigned each div]') The only way to detect the sequence is to do a long drawn out loop looking for coordinate values, and comparing them to a prestablish template set of values, then looping back through to compare the contents of each div and decide if they are in the right place (visually). The problem is that some divs may have the same content. If the same content appears to be in the right place, the coordinates can be wrong. So I need to detect the content and decide if it is right, regard- less of the coordinates. This has to be done by the program (of course). So the question is: What is javascript doing when it is asked to Code: document.getElementByTagName('[elem]');
In this case are the divs children of the document? (in the case of my project, children of a container div) And why would they not be detected in the order apparent in the browser window? I will post the current version and return and post a reply with the url. http://www.jekillen.com/jekillen/con..._wise_dev.html I have no js experience or coding experience of any kind other than the last few hours of reading a book called 'object-oriented javascript', and all was well until loops. firstly, this is how he teaches the while loop... var i = 0; while (i <10) {i++;} which results in 9 we move on to for loops... var res =''; for( var i = 0; i <10; i++) {res += 'sometext' ;} which repeats, but I'd like to be able to make that into a sequence of numbers... 123456789. how do I do that? thanks. Hi! I'm very new to Javascript so first I want to apologize for my lack of knowledge, what I'm asking is probably really simple to do. Im have a folder full of images. Each image is named with an incrementing number like vidseq000001, vidseq000002, vidseq000003 and so on. I'm trying to use a jQuery plugin called "reel" to make the sequence animate. For that it seems I need to put the images inside an array. I know how to manually enter each image inside the array like var [ vidseq000001, vidseq000002, vidseq000003, ] But this becomes quite tedious with over thousand images. What would be a smarter way to put all my images inside an array? Hey, I'm writing a piece of code, using a given code as an example, but few things are confusing to me, if you could just explain me step by step what it does, I would really appreciated. Code: function getGeneticCodeString (type) {
if ((type.toLowerCase() == "standard") || (type.toLowerCase() == "transl_table=1"))
{
return "/gc[acgturyswkmbdhvn]/=A," +
// Here I know that the three letter combination HAS to begin with 'gc'
// can be followed by a,c,t,g or u.
// What do the other letter represent?
"/[tu]g[ctuy]/=C," +
// Begins with either 't' or 'u', middle symbol is 'g'
// third symbol can be c, t, or u ('u' can be used only if it begins with 'u'.
// what is the 'y' for in the second square brackets for??
"/ga[agr]/=E " ;
// Must start with 'ga' followed by 'a' or 'g'.
// What is 'r' for?
}
}
Hope, I didn't confuse anybody. Thank you. say cutcost2 is 10 and qty is 25 Code: document.profile_quote.cuttotal.value = eval(document.profile_quote.cutcost2.value + document.profile_quote.qty.value) .toFixed(2) the output i get is 1025 rather than 35. what have i got wrong? thanks I have written below code to except only number in a textbox. This is working fine. However, When I'm copying and pasting, then it is taking non-numbers. Code:
<html>
<head>
<title></title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<SCRIPT type="text/javascript">
function isNumberKey1(evt)
{
var charCode = (evt.which) ? evt.which : event.keyCode
if (charCode = 46 && charCode > 31
&& (charCode < 48 || charCode > 57))
return false;
return true;
}
</SCRIPT>
</head>
<body>
Phone number :
<input type="text" id="phonenumber" onkeypress="return isNumberKey1(event)" maxlength="10" size="15" > <br /> <br />
Alternative number:
<input type="text" onkeypress="return isNumberKey1(event)" id="alt" maxlength="10" size="15">
<input type="button" value="Submit">
</body>
</html>
I'm trying to teach myself Javascript to prepare for it next term. I asked earlier how to add together the numbers 1-10 in a loop. Now I'm wondering how can I change the 10 to be a valuable I input. Basically I want to be able to enter a number on the page or in a message box then I want the code to add all the numbers from 1- the number I enter. The code I got from my previous thread is he Code: <html>
<head>
<script type="text/javascript">
var varX = user input;
function sum() {
var varX = user input;
for(varY = 1; varY<=10; varY++) {
varX = varX + varY;
}
return varX;
}
var resultat = sum();
alert(resultat); // show message box with result
</script>
</head>
<body>
</body>
</html>
Hay! I have a silly question, I have a row of numbers, 1 to 250. The numbers are all in one horizantal line. But I want to use a <br> after every 10 numbers. I tried: if(i % 10) { document.write("<br>"); } This is how I wanted to be: 1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 16, 17, 18, 20, Does any one know how can I achieve this I'm still a noob. Hi, I have this bit of java code that puts a random/unique number in a field on my web page: <html> <head> </head> <body> <form> <input type="text" name="MyField" /> </form> <script langueage="javascript" type="text/javascript"> var d = new Date(); var tm = d.getTime(); document.getElementsByName('MyField')[0].value=tm; </script> </body> </html> My problem is that I want to limit the number to just 6 digits. Is this possible? Any help would be much appreciated Thank you Dave Hello friend, I need a JS validation code for validating numbers such that,Empty space and characters(including + and -) shouldn't be allowed,there should be only one decimal point,spaces and characters between numbers also shouldn't be permitted. Hi, Want to add numbers using JS. Have 4 text boxes for user entry. Want either a label (preferred) or fifth text box to automatically sum those entries. Did following but not working. Any suggestions? <script language="javascript"> var addRange = function() { var NoHrsRangeComp = document.getElementById("NoHrsRangeComp"); var NoHrsRangeCred = document.getElementById("NoHrsRangeCred"); var NoHrsRangeOT = document.getElementById("NoHrsRangeOT"); var NoHrsRangeRC = document.getElementById("NoHrsRangeRC"); var RangeSum = document.getElementById("RangeSum"); var sum = 0; if (isNaN(parseFloat(NoHrsRangeComp.value))){ NoHrsRangeComp.value = ""; } if (isNaN(parseFloat(NoHrsRangeCred.value))){ NoHrsRangeCred.value = ""; } if (isNaN(parseFloat(NoHrsRangeOT.value))){ NoHrsRangeOT.value = ""; } if (isNaN(parseFloat(NoHrsRangeRC.value))){ NoHrsRangeRC.value = ""; } sum = parseFloat(NoHrsRangeComp.value) + parseFloat(NoHrsRangeCred.value) + parseFloat(NoHrsRangeOT.value) + parseFloat(NoHrsRangeRC.value); RangeSum.innerHTML = sum; } </script> Input as follows: <input style="width: 50px" type="text" name="NoHrsRangeComp" id="NoHrsRangeComp" onblur="addRange();"/> <input style="width: 50px" type="text" name="NoHrsRangeCred" id="NoHrsRangeCred" onblur="addRange();"/> <input style="width: 50px" type="text" name="NoHrsRangeOT" id="NoHrsRangeOT" onblur="addRange();"/> <input style="width: 50px" type="text" name="NoHrsRangeRC" id="NoHrsRangeRC" onblur="addRange();"/> <input style="width: 50px" type="text" name="RangeSum" id="RangeSum" onblur="addRange();"/> For above entry prefer - label makes it look more like usual addition and does not confuse users to want to make entry. <label id="RangeSum" onblur="addRange();" style="border-bottom:medium"></label> John helow to all im new here? iwant to ask on how to display the sum of the 20 numbers i allready get the everage but i want to display the sum together of the everage this my code.. <html> <body> <script type = "text/javascript"> var numtotal = parseInt(prompt("How many numbers do you want to sum up?","")); var total = 0; for (var i=0; i<numtotal; i++) { var ans = parseFloat(prompt ("Enter a number", "")); if ((isNaN(ans)) || (ans == "")) { alert ("You must enter a number!! "); i -- ; } else {total = total + ans/numtotal}; } alert (total); // the total </script> </body> </html> any body help me please? |
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