CODEWITHSUNDEEP
javascriptregexstring
dventi3
dventi3

Reputation: 991

Extract email address from string

I have a string like this: 

Francesco Renga <[email protected]>

I need to extract only the email, i.e. [email protected].

How can I do this in nodejs/javascript in "elegant" way?

Upvotes: 4

Views: 16981

Answers (4)

Rahman Qadirzade
Rahman Qadirzade

Reputation: 145

function getEmailFromText(text){
    const has = text.includes("@");
    const left = text.split("@")[0];
    const right = text.split("@")[1];
    const email = has ? `${left.split(" ")[(left.split(" ").length-1)]}@${right.split(" ")[0]}` : "";
    const re_email = email.match(/\b[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Z|a-z]{2,}\b/g);
    return re_email ? re_email[0] : "";
}

console.log(getEmailFromText("Contact me on: [email protected] other other..."));

Upvotes: 0

Munna Kumar
Munna Kumar

Reputation: 535

Here's a simple code showing how extract the unique list of emails address using JavaScript :

let emaillst = string .match(/([a-zA-Z0-9._+-]+@[a-zA-Z0-9._-]+\.[a-zA-Z0-9._-]+)/gi);

            if (emaillst === null) {
                // no Email Address Found
            } else {
                const uniqueEmail = Array.from(new Set(emaillst));
                const finaluniqueEmail = [];
                for(let i=0; i<=uniqueEmail.length; i++){
                    let characterIs = String(uniqueEmail[i]).charAt(String(uniqueEmail[i]).length - 1)
                    if(characterIs==='.'){
                        finaluniqueEmail.push(String(uniqueEmail[i].slice(0, -1)))
                    }else{
                         finaluniqueEmail.push(uniqueEmail[i]);
                    }
                }
                emaillst = finaluniqueEmail.join('\n').toLowerCase();
                console.log(matches[1]);

See the Live Demo of email address extractor online

Features

  • Get Unique Emails
  • Auto remove duplicate emails
  • convert upper case email address to lowercase

Upvotes: 4

Stephane Janicaud
Stephane Janicaud

Reputation: 3627

Using regex, if your string pattern is always Some text<email> or Some text<email>, Some text<email> <email> you can use this simple one <(.*?)>

Demo

Other solution

Use positive lookahead : [^<]+(?=>), here is a snippet and a demo

var text = "Francesco Renga <[email protected]>, Marty McFly <[email protected]> Marty McFly <[email protected]> <[email protected]>";
var re = /[^< ]+(?=>)/g;

text.match(re).forEach(function(email) {
  console.log(email);
});

Explanation

[^<]+ match anything but a <between one and unlimited times

(?=>) followed by a >

Simple and does not require any group.

Upvotes: 7

Kewin Dousse
Kewin Dousse

Reputation: 4027

Here's a simple example showing how to use regex in JavaScript :

var string = "Francesco Renga <[email protected]>"; // Your string containing
var regex = /<(.*)>/g; // The actual regex
var matches = regex.exec(string);
console.log(matches[1]);

Here's the decomposition of the regex /<(.*)>/ :

  • / and / are mandatory to define a regex
  • < and > simply matches the two < and > in your string
  • () parenthesis "capture" what you're looking for. Here, they get the mail address inside.
  • .* : . means "any character", and * means "any number of times. Combined, it means "any character any number of times", and that is inside < and >, which correspond to the place where the mail is.

Upvotes: 4

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