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JavaScript - Matching Three Letter Sequence To A Letter??
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. Similar TutorialsI 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 need to change one letter in a text string, but near as I can figure out, I can't just do this: Code: TextString[8] = "X"; Is that possible, or do I have to break the string and rebuild it into a second string? Hi, I have been working on a hangman game and I have run into a glitch. I have it coded so that when the user guesses a letter correct, the letter is filled into the corresponding text spot. Like this: Code:
if (randomword.indexOf(guess1) == 0)
{
document.form1.letter1.value = guess1
letter1 = guess1
}
if (randomword.indexOf(guess1) == 1)
{
document.form1.letter2.value = guess1
letter2 = guess1
}
if (randomword.indexOf(guess1) ==2)
{
document.form1.letter3.value = guess1
letter3 = guess1
}
if (randomword.indexOf(guess1) == 3)
{
document.form1.letter4.value = guess1
letter4 = guess1
}
if (randomword.indexOf(guess1) == 4)
{
document.form1.letter5.value = guess1
letter5 = guess1
}
if (randomword.indexOf(guess1) == 5)
{
document.form1.letter6.value = guess1
letter6 = guess1
}
if (randomword.indexOf(guess1) == 6)
{
document.form1.letter7.value = guess1
letter7 = guess1
}
if (randomword.indexOf(guess1) == 7)
{
document.form1.letter8.value = guess1
letter8 = guess1
}
if (randomword.indexOf(guess1) == 8)
{
document.form1.letter9.value == guess1
letter9 = guess1
}
if (randomword.indexOf(guess1) == 9)
{
document.form1.letter10.value = guess1
letter10 = guess1
}
if (randomword.indexOf(guess1) == 10)
{
document.form1.letter11.value = guess1
letter11 = guess1
}
The variable randomword is the randomly selected word from an array. The guess1 is the users guess. The letter variables are just to check to see if all the spots are filled to win the game. It works fine if the the word doesnt have repeating letters in it such as "Lucky". However words such as "Happy" do not work. If you guess 'p' code fills in the 3 text box with a 'P' but it leaves the 4 spot empty. Even if you guess 'p' again, it still leaves the 4 box empty. Thanks for the help! If you need to see the full code i can post it. Thanks again! Hi, I have a 'Register' page on my site. When someone registers to my website, I would like to make it necessary to have a div box which generates a random number/letter, which is linked to a text field where the user has to match the generated output. I've been sitting here wondering which would be the best route to take regarding completing this. I was thinking about using charAt() method. Could anybody please possibly give me some tips for generating random letter/numbers? Possibly would I create a string containing "ABCDE....Z0123456789", then use the charAt method to find a character at a certain index position? If so, would I need create something which generates a random index position? Any help would be fantastic, thank-you. I need to make something that will automatically insert values into a letter based on user input, just like this one right here. please tell me how it works....
Hi, I want to display my listings like they do he http://www.ticketnetwork.com/performers/concerts/a.aspx The code on my end calling the third party service looks like this: <script language="javascript" type="text/javascript"> document.write('<script language="javascript" src="http://###########.com/?bid='+####+'&sitenumber='+#+'&tid=event_names&pcatid=2&showcats=true&title=Concerts Tickets"></' + 'script>'); </script> How do I make it only display one letter at a time? I believe some variation on the sort method might work... Hi, below is my code and i cant seem to figure out how i can loop the string and find the location of letter "a" in the string and display it like "1 3 17" ... i cant seem to figure out what i am doing wrong in the loop and keep getting "1 1" ... Thanks before hand! <html> <body> <script type="text/javascript"> var char = "a"; var str="JavaScript is great!" var pos= 0 for(i=0; i<=str.length; i++) { if(pos == i) { var pos = str.indexOf("a") document.write(pos++ + " ") } } </script> </body> </html> I am working on a work project that requires a 5*5 table, that will generate random letters in each cell upon button click. I have most of the coding complete with the exception of the letter generation. I am currently generating numbers, I would even be fine with having a RandBetween(and listing the 26 letters of the alphabet) at this point. Any suggestions? Code: <script type="text/javascript">
var random1, random2, random3, random4, random5, random6, random7, random8, random9, random10, random11, random12, random13, random14, random15, random16, random17, random18, random19, random20, random21, random22, random23, random24, random25;
var randomArray = [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0];
//generate the random characters
function CreateCellData() {
for (var i=0; i<randomArray.length; i++) {
randomArray[i] = Math.floor(Math.random()*99 + 1);
}
}
Hi, i know i should have 2 fields for a first and last name in my form but i dont - and was wondering if someone would be able to help me with - or has - a java script valadation rule to only allow a one letter character (letter in between spaces such as a middle initial) in a text field if at least 2 words are also included (2 words of at least 2 or more characters) so if the user input ' John H ' an error prompt would display until one more word is added/at least 2 words are found right now im using the below coding to allow at least 2 words in the text field but would like to see if its possible to enhance it so it will only block a one letter word if there are less than 2 other words in the form - right now if any words is added with less than 2 characters it will display an error... if anyone knows of a better form of code that needs a minimum of 2 words added and still allows single characters such as middle initials to in a validation script i'd greatly appreciate your help... i get lost on validation process' 'cheers' in advance to anyone that may know of something or a site that can point me in a better direction function(value,element){return this.optional(element)||/^((\b[a-zA-Z]{2,80}\b)\s*){2,}/ The statement does what I want it to do, except if there is multiple instances of the word, it only outputs one, how can I work it so all instances are output in red? (while still using .slice) var phrase = prompt("Enter a messate: ", 'Message'); var searchFor = prompt("Enter search text: ", 's'); var matchPhrase = ""; var searchIndex = -1; /* if there's a match, create a text string by * add the phrase text from before the match, * add <font> tags around the match text, * add the rest of the phrase from after the match */ searchIndex = phrase.indexOf(searchFor); if (searchIndex >=0 ) { // Copy text from phrase up till the match. matchPhrase += phrase.slice(0, searchIndex); matchPhrase += '<font color="red">' + searchFor + '</font>'; matchPhrase += phrase.slice(searchIndex + searchFor.length); phrase++ } else { matchPhrase = "No matches" } document.writeln(matchPhrase); Reply With Quote 01-31-2015, 09:08 AM #2 Philip M View Profile View Forum Posts Supreme Master coder! Join Date Jun 2002 Location London, England Posts 18,371 Thanks 204 Thanked 2,573 Times in 2,551 Posts Use a regular expression. 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. 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> 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. Hi, 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 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?
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? 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. 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 |
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