How do I find "mergefields" using javascript and regex? -

my "mergefields" [@something].

having string this..

[@name] [@age] years old , favorite color [@color]. 

since user enters mergefields, don't know mergefields.

how can in javascript + regex find [@...] fields?

thanks

you can use following regex extract [@...] pattern string.

/(\[@\w+])/g 

explanation

1. (): matching group
2. \[: matches [ literal, need escape preceding \
3. @: matches @ literal
4. \w+: matches alphanumeric characters , underscore _ 1 or more times
5. ]: matches ] literal
6. g: global flag. matches

visualization

demo

var str = '[@name] [@age] years old , favorite color [@color].';    var matches = str.match(/(\[@\w+])/g);    document.write(matches);  console.log(matches);