I have some text and i want to find all emails parts in it. Then return only domeins part, it should look something like:
meth#buisness.com --> buisness.com
yaourt#yoplait.fr --> oplait.fr
I tried to do this:
Code
var text = "I get a mail from meth#buisness.com (by the way I thought its domain was buisness.com), it was sent to yaourt#yoplait.fr, but the guys of gmail.com said we could only trust the yaourt#cesi.fr adress";
function getDomainsOfEmails(text) {
var regMatch = /#([a-z]+.[a-z]+)/g;
var regReturn = text.match(regMatch);
console.log( regReturn);
return regReturn;
}
getDomainsOfEmails(text);
But i don't know how to exclude an "#"sign from the search.
Parentheses in RegExp create cature group. The regexp.exec function returns an array where 0 is the whole match and then all other cells contain capture groups from left to right. So this:
var reg = /#([a-z0-9-]+\.[a-z]+)/ig;
reg.exec(text);
Will return the following on first call:
[
0: "#yoplait.fr"
1: "yoplait.fr"
]
And if you call it again, since the expression has a global flag, it'll get the next result:
[
0: "#buisness.com"
1: "buisness.com"
]
but best thing to divide this to two part and get the second part. try this i hope this is work
(?<=#)[^.]+(?=\.).*$
Related
I may be thinking this about the wrong way.
The first three (...)'s are generated and could be any number. I only want to catch these first set of items and allow the user to use () inside of their custom string.
Test String
(374003) (C6-96738) (WR183186) R1|SALOON|DEFECTIVE|WiFiInfotainment|Hardware detects WIFI but unable to log in on the (JAMIE HUTBER) internet.:
Regex
/\(([^)]+)\)/g
Current output
["(374003)", "(C6-96738)", "(WR183186)", "(JAMIE HUTBER)"]
Desired Output
["(374003)", "(C6-96738)", "(WR183186)"]
You can use two ways to do that:
get only 3 items from array
add space to your regexp \(([^ )]+)\) (https://regex101.com/r/ZPdq35/1/)
Using the sticky option /y you can then use regEx's ability to find all occurrences..
This will then work, if there is not a space in JAMIE HUNTER, etc..
eg.
const re = /\s*\(([^)]+)\)/y;
const str = "(374003) (C6-96738) (WR183186) R1|SALOON|DEFECTIVE|WiFiInfotainment|Hardware detects WIFI but unable to log in on the (JAMIE HUTBER) internet.:";
let m = re.exec(str);
while (m) {
console.log(m[1]);
m = re.exec(str);
}
I have an Array with one or more entries. Each one is a string (List of urls in open Tabs via Firefox SDK). I want to check if a specific url is already opened in some of the tabs (nothing special till now).
My problem is, that the url in tab list can have four diffrent fourms. For example:
Url I want to find in the tablist:
https://cmsr-author.de/cf#/content/test/de.html
But the url can also look like this:
https://cmsr-author.de/content/test/de.html
https://cmsr-author.de/test/de.html
https://cmsr-author.de/cf#/test/de.html
Of course the last part of the url (after /test/...) is always something diffrent. If I wasn't able to find one of the four urls in the tablist i want to call some other action.
My Solution till now is to build some if-chain:
if (res !== url1) {
if (res !== url2) {
if ...
But i thought there must be some more elegant way. Maybe via RegEx? I already have a capture to catch the first part (which stays the same https://cmsr-author.ws...) with it four forms. But i dont know how to implent this probably.
var urls = ["https://cmsr-author.de/content/test/de.html","https://cmsr-author.de/test/de.html","https://cmsr-author.de/cf#/test/de.html"]
var filtered = urls.filter(function(url)
{
return url.indexOf("cf#") > -1 && url.endsWith("/test/de.html")
})
var contains = filtered.length > 0
console.log(contains)
If you want to use regex you can do this by using groups for the middle part, which is explained in detail here: http://www.regular-expressions.info/refcapture.html
Practically, your regex would look something like that:
https:\/\/cmsr-author\.de\/(content|...|...)\/de\.html
Where ... must be replaced by the middle parts of the url which differ.
Note that | is "or" used to provide multiple possibilities within the group. The character / and . must be escaped since they have special roles in regex.
I hope that helps!
My English is not good,Do not fully understand what you mean,According to my idea,You should need a regular expression,Only to match the first.If I am wrong,
please # me.
I hope that helps!
var reg = /^https:\/\/cmsr\-author\.de\/cf#\/(?:\w+\/)+test\/de\.html$/gi;
var str1 = "https://cmsr-author.de/cf#/content/test/de.html";
var str2 = "https://cmsr-author.de/content/test/de.html";
var str3 = "https://cmsr-author.de/test/de.html";
var str4 = "https://cmsr-author.de/cf#/test/de.html";
console.log(reg.test(str1));
console.log(reg.test(str2));
console.log(reg.test(str3));
console.log(reg.test(str4));
I'm trying to do something very simple, but I can't get to work the way I intend. I'm sure it's doing exactly what I'm asking it to do, but I'm failing to understand the syntax.
Part 1:
In the following example, I want to extract the part of the string between geotech and Input.
x = "geotechCITYInput"
x.match(/^geotech(.*)(?:Input|List)$/)
The result:
["geotechCITYInput", "CITY"]
I've been writing regex for many years in perl/python and even javascript, but I've never seen the ?: syntax, which, I think, is what I'm supposed to use here.
Part 2:
The higher level problem I'm trying to solve is more complicated. I have a form with many elements defined as either geotechXXXXInput or geotechXXXXList. I want to create an array of XXXX values, but only if the name ends with Input.
Example form definition:
obj0.name = "geotechCITYInput"
obj1.name = "geotechCITYList"
obj2.name = "geotechSTATEInput"
obj3.name = "geotechSTATEList"
I ultimately want an array like this:
["CITY","STATE"]
I can iterate over the form objects easily with an API call, but I can't figure out how to write the regex to match the ones I want. This is what I have right now, but it doesn't work.
geotechForm.forEachItem(function(name) {
if(name.match(/Input$/)
inputFieldNames.push( name.match(/^geotech(.*)Input$/) );
});
Any suggestions would be greatly appreciated.
You were missing the Input and List suffix in your regex. This will match if the name starts with geotech and ends with either Input or List and it will return an array with the text in the middle as the second item in the array.
geotechForm.forEachItem(function (name) {
var match = name.match(/^geotech(.*)(Input|List)$/);
if (match) {
inputFieldNames.push(match[1]);
}
});
I am trying to write something that would look at tweets and pull up info about stocks being mentioned in the tweet. People use $ to reference stock symbols on twitter but I cant escape the $.
I also dont want to match any price mention or anything like that so basically match $AAPL and not $1500
I was thinking it would be something like this
\b\$[a-zA-Z].*\b
if there are multiple matches id like to loop through them somehow so something like
while ((tweet = reg.exec(sym_pat)) !== null) {
//replace text with stock data.
}
This expression gives me an unexpected illegal token error
var symbol_pat = new RegExp(\b\$[a-z]*);
Thanks for the help if you want to see the next issue I ran into
Javascript AJAX scope inside of $.each Scope
Okay, you've stated that you want to replace the matches with their actual stock values. So, you need to get all of the matching elements (stock ticker names) and then for each match you're going to replace the it with the stock value.
The answer will "read" very similarly to that sentence.
Assume there's a tweet variable that is the contents of a particular tweet you're going to work on:
tweet.match(/\b\$[A-Za-z]+\b/g).forEach(function(match) {
// match looks like '$AAPL'
var tickerValue = lookUpTickerValue(match);
tweet.replace(match, tickerValue);
});
This is assuming you have some logic somewhere that will grab the ticker value for the given stock name and then replace it (it should probably return the original value if it can't find a match, so you don't mangle lovely tweets like "Barbara Streisand is $ATAN").
var symbol_pat = new RegExp('\\b\\$[a-z]+\\b','gi');
// or
var symbol_pat = /\b\$[a-z]+\b/gi;
Also, for some reason JS can not calculate the beginning of a word by \b, it just catches the one at the end.
EDIT: If you're replacing the stock symbols you can use the basic replace method by a function and replace that data with predefined values:
var symbol_pat = /(^|\s)(\$[a-z]+\b)/gi;
var stocks = {AAPL:1,ETC:2}
var str = '$aapl ssd $a a$s$etc $etc';
console.log(str);
str = str.replace(symbol_pat, function() {
var stk = arguments[2].substr(1).toUpperCase();
// assuming you want to replace $etc as well as $ETC by using
// the .toUpperCase() method
if (!stocks[stk]) return arguments[0];
return arguments[0].replace(arguments[2],stocks[stk]);
});
console.log(str);
I would like to build my own translation function in javascript.
I already have a function language.lookup(key) which translates a word or expression:
var frenchHello = language.lookup('hello') //'bonjour'
Now I would like to write a function which takes a html string and translates it with my lookup function. In the html string I will have a special syntax for example #[translationkey] that will point out that this word should be translated.
This is the result I want:
var html = '<div><span>#[hello]</span><span>#[sir]</span>'
language.translate(html) //'<div><span>bonjour</span><span>monsieur</span>
How would I write language.translate?
My idea is to filter out my special syntax with regex and then run language.lookup on each key. Maybe with string replace or something.
I suck when it comes to regex and I've only come up with a very incomplete example but I include it anyway so maybe someone get the idea of what I am trying to do. Then if there is a better but complete different solution that is more than welcome.
var value = "#[hello], nice to see you.";
lookup = function(word){
return "bonjour";
};
var res = new RegExp( "\\b(hello)\\b", "gi" ).exec(value)
for (var c1 = 0; c1 < res.length; c1++){
value = value.replace(res[c1], lookup(res[c1]))
}
alert(value) //#[bonjour], nice to see you.
The regex should of course not filter out the word hello but the syntax and then collect the key by grouping or similar.
Can anyone help?
Just use String.replace method's ability to call function specified as second argument to generate replacement text and make a global replace using regexp matching your syntax:
var value = "#[hello], #[sir], nice to see you.";
lookup = function(full_match, word){
if(word == 'hello')
return "bonjour";
if(word == 'sir')
return "monsieur"
};
console.log(value.replace(/#\[(.+?)\]/gi, lookup))
Result:
bonjour, monsieur, nice to see you.
Of course when your replacement list gets bigger, you'd better use lookup object instead of series of ifs in lookup function, but you can really do whatever you want there.
You can try this to find all occurrences:
var re = new RegExp('#\\[([^\\]]+?)\\]', 'gi'),
str = '#[value1] plain text #[value2]',
match;
while (match = re.exec(str)) {
console.log(match);
}
You could use something like:
#\\[[^\\]]*\\]
Which matches the hash followed by an opening square bracket followed by zero or more characters NOT including the closing square bracket, followed by a closed square bracket.
Alternatively, perhaps it would be better to handle the translation at the server side (maybe even through your template engine) and send back to your client the translated response. Otherwise, (depending on the specific problem you are dealing with of course), you might end up sending a lot of data to the browser which might make your application respond slowly.
EDIT:
Here is a working piece of code:
var q="This #[ANIMAL1] was eaten by that #[ANIMAL2]";
var u = {"#[ANIMAL1]":"Lion","#[ANIMAL2]":"Frog"};
function insertAnimal(aString, lookup){
var res = (new RegExp("#\\[[^\\]]*\\]", "gi"))
while (m = res.exec(aString)){
aString = aString.replace(m, lookup[m])
}
return aString;
}
function main(){
alert(insertAnimal(q,u));
}
You can call the "main()" from an HTML document's body onload event
I can compare your requirement to 'resolving template texts within content'. If it is feasible to use Jquery , you should try Handlebars.js
.