Okay, to start with I should mention this is a very small personal project, and I've only have a handful of coding classes several years ago now. I can figure out a lot of the (very) basics, but have a hard time troubleshooting. I'm in a little bit over my head here, and need a dumbed down solution.
I'm trying to put together a VERY simple translator that takes in a word or sentence from the user via a text input box, puts each word of the string into an array, translates each word in order, then spits out each translated word in the order it was input. For example, typing "I like cats" would output "Ich mag Katze" in German.
I've got most of it, but I CAN'T get anything but the first array element to translate. It comes out like "Ich like cats".
I've used a loop, probably because I'm an amateur and don't know another way of doing this, and I'd rather not use any libraries or anything. This is a very small project I want to have a couple of friends utilize locally; and I know there has to be some very simple code that will just take a string, put it into an array, swap one word for another word, and then output the results, but I'm damned if I can make it work.
What I currently have is the closest I've gotten, but like I said, it doesn't work. I've jerry-rigged the loop and clearly that's the totally wrong approach, but I can't see the forest for the trees. If you can help me, please make it "Javascript for Babies" picture book levels of simple, I cannot stress enough how inexperienced I am. This is just supposed to be a fun little extra thing for my D&D group.
function checkForTranslation(input, outputDiv) {
var input = document.getElementById("inputTextField").value;
var outputDiv = document.getElementById("translationOutputDiv");
input = input.toLowerCase();
//puts user input into an array and then outputs it word by word
const myArray = input.split(" "); //added .split, thank you James, still otherwise broken
let output = "";
let translation = "";
for (let i = 0; i < myArray.length; i++) {
output += myArray[i]; //up to here, this works perfectly to put each word in the string into an array
//prints all words but doesnt translate the second onwards
translation += myArray[i];
if (output == "") {
//document.getElementById("print2").innerHTML = "Translation Here";
}
else if (output == "apple") {
translation = "x-ray";
}
else if (output == "banana") {
translation = "yak";
}
else {
translation = "???";
}
output += " "; //adds a space when displaying original user input
} // END FOR LOOP
document.getElementById("print").innerHTML = output; //this outputs the original user input to the screen
document.getElementById("print3").innerHTML = translation; //this should output the translated output to the screen
} // END FUNCTION CHECKFORTRANSLATION
What it looks like
P.S. I'm not worried about Best Practices here, this is supposed to be a quickie project that I can send to a couple friends and they can open the HTML doc, saved locally, in their browser when they want to mess around with it if they want their half-orc character to say "die by my hammer!" or something. If you have suggestions for making it neater great, but I'm not worried about a mess, no one is going to be reading this but me, and hopefully once it's fixed I'll never have to read it again either!
Since it is a manual simple translation, you should just create a "dictionary" and use it to get the translations.
var dictionary = {
"apple": "x-ray",
"banana": "yak"
}
function checkForTranslation() {
var input = document.getElementById("inputTextField").value.toLowerCase();
var words = input
.split(' ') // split string to words
.filter(function(word) { // remove empty words
return word.length > 0
});
var translatedWords = words.map(function(word) {
var wordTranslation = dictionary[word]; // get from dictionary
if (wordTranslation) {
return wordTranslation;
} else { // if word was not found in dictionary
return "???";
}
});
var translatedText = translatedWords.join(' ');
document.getElementById("translationOutputDiv").innerHTML = translatedText;
}
document.getElementById('translate').addEventListener('click', function() {
checkForTranslation();
});
<input type="text" id="inputTextField" />
<button id="translate">translate</button>
<br/>
<hr />
<div id="translationOutputDiv"></div>
Or if you want it a little more organized, you could use
const dictionary = {
"apple": "x-ray",
"banana": "yak"
}
function getTranslation(string) {
return string
.toLowerCase()
.split(' ')
.filter(word => word)
.map(word => dictionary[word] || '???')
.join(' ');
}
function translate(inputEl, outputEl) {
outputEl.innerHTML = getTranslation(inputEl.value);
}
document.querySelector('#translate').addEventListener('click', function() {
const input = document.querySelector('#inputTextField');
const output = document.querySelector('#translationOutputDiv');
translate(input, output);
});
<input type="text" id="inputTextField" />
<button id="translate">translate</button>
<br/>
<hr />
<div id="translationOutputDiv"></div>
Related
I have been implementing a simple quiz for English. In that, we need to validate answers, which are entered by users in input field. In the current implementation, I am comparing the correct answer with user's answer exactly. Like,
HTML
<input type="text" id="answer" />
<button onclick="validate()">Validate</button>
Javascript
var question = "Do you like movies?",
answer = "No, I don't like movies.";
function validate() {
var userInput = document.getElementById('answer').value;
if(answer == userInput) {
console.log("correct");
} else {
console.log("wrong");
}
}
But I don't want validate exactly. Like, ignore case sensitive, commas, apostrophe, etc. For example if user enters,
i dont like movies
The answer can be correct. I don't know how start and where to start. Anyone please help.
One option would be to strip out all non-word characters and spaces, and compare the lower-case version of each replaced string:
var question = "Do you like movies?",
answer = "No, I don't like movies.";
const normalize = str => str
.replace(/[^\w ]/g, '')
.toLowerCase();
function validate(userInput) {
const noramlizedInput = normalize(userInput)
const noramlizedAnswer = normalize(answer);
if (noramlizedInput == noramlizedAnswer) {
console.log("correct");
} else {
console.log("wrong");
}
}
validate('No i dont like movies');
validate("NO!!!!! I DON''t like movies.");
Another option would be to loop through all possible substrings of the userInput and figure out which has the most overlap with the desired answer, but that's a whole lot more complicated.
An easier option would be to check to see how many overlapping words there are:
var question = "Do you like movies?",
answer = "No, I don't like movies.";
const normalize = str => str
.replace(/[^\w ]/g, '')
.toLowerCase()
.split(/\s+/)
function validate(userInput) {
const noramlizedInputArr = normalize(userInput);
const noramlizedAnswerArr = normalize(answer);
const overlapCount = noramlizedInputArr.reduce((a, word) => (
a + Number(noramlizedAnswerArr.includes(word))
), 0);
console.log(overlapCount);
if (overlapCount >= 4) {
console.log("correct");
} else {
console.log("wrong");
}
}
validate('No i dont like movies');
validate("NO!!!!! I DON''t like movies.");
validate("i dont like movies.");
validate("Yes I like movies.");
If you are interested in simply catching spelling errors and small variations, a standard metric is called edit distance or Levenshtein distance. This is a count of the minimum number of deletions, insertions, or substitutions you need to change one text into another. Strings like "No I don't like the movies" and "No I don't like the moveys" will have small edit distances.
Here's a quick and dirty recursive edit distance function that will give you an idea:
function validate(text, pattern) {
// some simple preprocessing
let p = pattern.toLowerCase().replace(/[^a-z]+/ig, '')
let t= text.toLowerCase().replace(/[^a-z]+/ig, '')
// memoize recursive algorithm
let matrix = Array.from({length: t.length + 1}, () => [])
function editDistance(text, pattern, i = 0, j = 0){
if(i == text.length && j == pattern.length) return 0
if(i == text.length) return pattern.length - j
if(j == pattern.length) return text.length - i
let choices = [
(matrix[i+1][j+1] || (matrix[i+1][j+1] = editDistance(text, pattern, i+1, j+1))) + (text[i].toLowerCase() === pattern[j].toLowerCase() ? 0 : 1),
(matrix[i+1][j] || (matrix[i+1][j] = editDistance(text, pattern, i+1, j))) + 1,
(matrix[i][j+1] || (matrix[i][j+1] = editDistance(text, pattern, i, j+1))) + 1
]
return Math.min(...choices)
}
return editDistance(t, p)
}
// similar strings have smaller edit distances
console.log(validate("No I dont lik moves","No i dont like movies"))
// a little less similar
console.log(validate("Yes I like movies","No i dont like movies"))
// totally different
console.log(validate("Where is the bathroom","No i dont like movies"))
// careful -- small edit distance !== close meaning
console.log(validate("I do like tacos","I don't like tacos"))
Picking a minimum acceptable distance works pretty well for matching strings with small typos. Of course, if you are trying to gauge user intent, none of these simple hues tics will work. Strings like "I love tacos" and "I loath tacos" have a small edit distance and you can't tell that they mean the opposite without knowledge of the language. If you need to do this level of checking you can try using a service like Watson Conversation that will return user intents to input.
I need to make a textbox with in there a word when i click on a button that word needs to convert into numbers useing charAt and that number needs to get +2 and than converted back into words and that word needs to get alerted i dont know what to do i find this really hard i made a function that is useless but i just want to show you what i did please help :)
function codeer(){
var woord2 = document.getElementById("woord")
var woordterug = woord2.charAt(0)
var woord234 = document.getElementById("woord");
var woord23 = woord234.charAt(str.length+2);
}
You could get the char code with String#charCodeAt from the character add two and build a new string with String.fromCharCode.
function codeer() {
var woord = document.getElementById("woord").value,
coded = '',
i;
for (i = 0; i < woord.length; i++) {
coded += String.fromCharCode(woord.charCodeAt(i) + 2);
}
console.log(coded);
}
<input id="woord" /> <button onclick="codeer()">cooder</button>
You should search the internet for a JavaScript rot13 example. In that code, you just need to replace the 13 with a 2, and it should work.
Not certain if this can be done in regexp under javascript, but thought it would be interesting to see if it is possible.
So thought I would clean up a piece of html to remove most tags, literally just dropping them, so <H1><img><a href ....>. And that would be relatively simple (well, stole the basis from another post, thanks karim79 Remove HTML Tags in Javascript with Regex).
function(inString, maxlength, callback){
console.log("Sting is " + inString)
console.log("Its " + inString.length)
var regex = /(<([^>]+)>)/ig
var outString = inString.replace(regex, "");
console.log("No HTML sting " + outString);
if ( outString.length < maxlength){
callback(outString)
} else {
console.log("Lets cut first bit")
}
}
But then I started thinking, is there a way where I can control regex execution. So lets say that I want to keep certain tabs, like b,br,i and maybe change H1-6 to b. So in pseudo code, something like:
for ( var i in inString.regex.hits ) {
if ( hits[i] == H1 ) {
hits[i] = b;
}
}
The issue is that I want the text thats not HTML tags to stay as it is, and I want it to just cut out by default. One option would of course be to change the ones I want to keep. Say change <b> to [[b]], once that is done to all the ones of interest. Then put them back to <b> once all unknown have been removed. So like this (only for b, and not certain the code below would work):
function(inString, maxlength, callback){
console.log("Sting is " + inString)
console.log("Its " + inString.length)
var regex-remHTML = /(<([^>]+)>)/ig
var regex-hideB = /(<b>)/ig
var regex-showB = /([b])/ig
var outString = inString.replace(regex-hideB, "[b]");
outString = outString.replace(regex-remHTML, "");
outString = outString.replace(regex-showB, "<b>");
console.log("No HTML sting " + outString);
if ( outString.length < maxlength){
callback(outString)
} else {
console.log("Lets cut first bit")
}
}
But would it be possible to be smarter, writing cod ethat says here is a peice of HTML tag, run this code against the match.
As Tim Biegeleisen sai in its comment, maybe a better solution could be using a parser instead of a Regex...
By the way, if you want to control what is going to be changed by the regex you can pass a callback to the String.prototype.replace:
var input = "<div><h1>CIAO Bello</h1></div>";
var output = input.replace(/(<([^>]+)>)/gi, (val) => {
if(val.indexOf("div") > -1) {
return "";
}
return val;
})
;
console.log("output", output);
I am currently working on a project that will allow me to bring in a string that would have a designated token that I will grab, get the designated value and remove the token and push to an array. I have the following condition which I am using split in JavaScript but it is not splitting on the designated ending token.
This is the beginning string
"~~/Document Heading 1~~<div>This is a test <b>JUDO</b> TKD</div>~~end~~<div class="/Document Heading 1">This is a test <b>JUDO</b> TKD</div>"
Current Code Block
var segmentedStyles = [];
var contentToInsert = selectedContent.toString();
var indexValue = selectedContent.toString().search("~~");
if (indexValue <= 0) {
var insertionStyle = contentToInsert.split("~~");
segmentedStyles.push(insertionStyle);
}
The designated token is enclosed by a "~~ .... ~~". In this code Block it is going through the condition but the string it is not splitting correctly. I am currently getting the Following string pushed to my array.
This is my current result
[,/Document Heading 1<div>This is a test <b>JUDO</b> TKD</div>end,
<div class="/Document Heading 1">This is a test <b>JUDO</b> TKD</div>]
My Goal
I would like to split a string that is coming in if a token is present. For example I would like to split a string starting from ~~.....~~ through ~~end~~. The array should hold two values like the following
segmentedStyles = [<div>This is a test <b>JUDO</b> TKD</div>],[<div class="/Document Heading 1">This is a test <b>JUDO</b> TKD</div>]
You could use a regular expression for matching the parts.
var string = '~~/Document Heading 1~~<div>This is a test <b>JUDO</b> TKD</div>~~end~~<div class="/Document Heading 1">This is a test <b>JUDO</b> TKD</div>',
array = string.split('~~').filter(function (_, i) {
return i && !(i % 2); // just get element 2 and 4 or all other even indices
});
console.log(array);
Assuming the string always starts with ~~/ you could use the following regex to get the array you want
~~([^\/].*)~~end~~(.*)
https://regex101.com/r/hJ0vM4/1
I honestly didn't quite understand what you're trying to accomplish haha, but I sort of understood what you're trying to do :)
First, just trying to make it clear some stuff. If you split() your string using /~~/ as the Regular Expression for splitting you'll get all the bits surrounded by "~~" in an array, like you did.
Second, if you change the tokens to ~~START~~ and ~~END~~ (tokens that never change) you can accomplish what you want by simply doing string.split(/~~(START|END)~~/) - Much shorter and quicker ;)
Third is the string always in the format ~~<something>~~THE STUFF YOU WANT~~end~~MORE STUFF YOU WANT? If it is, I'd suggest doing this:
function splitTheTokens(str) {
var result = [];
var parts = str.split(/~~end~~/);
for (var i = 0; i < parts.length; i++) {
if (!parts[i]) { continue; } // Skips blanks
if (parts[i].indexOf("~~") == 0) {
// In case you want to do something with the name thing:
var thisPartName = parts[i].substring(2, parts[i].indexOf("~~", 2));
// What (I think) you actually want
var thisPartValue = parts[i].substring(thisPartName.length + 4);
result.push(thisPartValue);
}
else {
result.push(parts[i]);
}
}
return result;
}
Hope this helps :D
I am trying to Titlecase some text which contains corporate names and their stock symbols.
Example (these strings are concatenated as corporate name, which gets title cased and the symbol in parens): AT&T (T)
John Deere Inc. (DE)
These corporate names come from our database which draws them from a stock pricing service. I have it working EXCEPT for when the name is an abbreviation like AT&T
That is return, and you guessed it right, like At&t. How can I preserve casing in abbreviations. I thought to use indexof to get the position of any &'s and uppercase the two characters on either side of it but that seems hackish.
Along the lines of(pseudo code)
var indexPos = myString.indexOf("&");
var fixedString = myString.charAt(indexPos - 1).toUpperCase().charAt(indexPos + 1).toUpperCase()
Oops, forgot to include my titlecase function
function toTitleCase(str) {
return str.replace(/([^\W_]+[^\s-]*) */g, function (txt) {
return txt.charAt(0).toUpperCase() + txt.substr(1).toLowerCase();
});
}
Any better suggestions?
A better title case function may be
function toTitleCase(str) {
return str.replace(
/(\b.)|(.)/g,
function ($0, $1, $2) {
return ($1 && $1.toUpperCase()) || $2.toLowerCase();
}
);
}
toTitleCase("foo bAR&bAz a.e.i."); // "Foo Bar&Baz A.E.I."
This will still transform AT&T to At&T, but there's no information in the way it's written to know what to do, so finally
// specific fixes
if (str === "At&T" ) str = "AT&T";
else if (str === "Iphone") str = "iPhone";
// etc
// or
var dict = {
"At&T": "AT&T",
"Iphone": "iPhone"
};
str = dict[str] || str;
Though of course if you can do it right when you enter the data in the first place it will save you a lot of trouble
This is a general solution for title case, without taking your extra requirements of "abbreviations" into account:
var fixedString = String(myString).toLowerCase().replace(/\b\w/g, String.toUpperCase);
Although I agree with other posters that it's better to start with the data in the correct format in the first place. Not all proper names conform to title case, with just a couple examples being "Werner von Braun" and "Ronald McDonald." There's really no algorithm you can program into a computer to handle the often arbitrary capitalization of proper names, just like you can't really program a computer to spell check proper names.
However, you can certainly program in some exception cases, although I'm still not sure that simply assuming that any word with an ampersand in it should be in all caps always appropriate either. But that can be accomplished like so:
var titleCase = String(myString).toLowerCase().replace(/\b\w/g, String.toUpperCase);
var fixedString = titleCase.replace(/\b\w*\&\w*\b/g, String.toUpperCase);
Note that your second example of "John Deere Inc. (DE)" still isn't handled properly, though. I suppose you could add some other logic to say, put anything word between parentheses in all caps, like so:
var titleCase = String(myString).toLowerCase().replace(/\b\w/g, String.toUpperCase);
var titleCaseCapAmps = titleCase.replace(/\b\w*\&\w*\b/g, String.toUpperCase);
var fixedString = titleCaseCapAmps.replace(/\(.*\)/g, String.toUpperCase);
Which will at least handle your two examples correctly.
How about this: Since the number of registered companies with the stock exchange is finite, and there's a well-defined mapping between stock symbols and company names, your best best is probably to program that mapping into your code, to look up the company name by the ticker abbreviation, something like this:
var TickerToName =
{
A: "Agilent Technologies",
AA: "Alcoa Inc.",
// etc., etc.
}
Then it's just a simple lookup to get the company name from the ticker symbol:
var symbol = "T";
var CompanyName = TickerToName[symbol] || "Unknown ticker symbol: " + symbol;
Of course, I would be very surprised if there was not already some kind of Web Service you could call to get back a company name from a stock ticker symbol, something like in this thread:
Stock ticker symbol lookup API
Or maybe there's some functionality like this in the stock pricing service you're using to get the data in the first place.
The last time I faced this situation, I decided that it was less trouble to simply include the few exceptions here and there as need.
var titleCaseFix = {
"At&t": "AT&T"
}
var fixit(str) {
foreach (var oldCase in titleCaseFix) {
var newCase = titleCaseFix[oldCase];
// Look here for various string replace options:
// http://stackoverflow.com/questions/542232/in-javascript-how-can-i-perform-a-global-replace-on-string-with-a-variable-insi
}
return str;
}