Question

I have a value (a) in my textbox. I want to get the email ids only from the given string using Javascript (I don’t want to use any JS Frameworks).

(a) [e-mail] (Blig fun), [e-mail] (LOl)

I need the output like 

[e-mail]
[e-mail] 

Answer 1

Try –

var tbstring = '(a) [e-mail] (Blig fun), [e-mail] (LOl)';
result = tbstring.match(/\b[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}\b/ig);
alert(result.join('\n'));

Demo – http://jsfiddle.net/ipr101/MM7Aa/

Email RegEx is taken from the RegEx Buddy library and comes with the following provisos –

Does not match email addresses using an IP address instead of a domain
name.

Does not match email addresses on new-fangled top-level domains with
more than 4 letters such as .museum. Including these increases the
risk of false positives when applying the regex to random documents.