CODEWITHSUNDEEP
javascriptregex
Giuseppe federico
Giuseppe federico

Reputation: 53

JavaScript regex to find string

I have a string and two words from a dictionary and I am trying to know if in my string there are words that are not my dictionary words.

var string = 'foobarfooba';

var patt = new RegExp("[^(foo|bar)]");// words from dictionary
var res = patt.test(string);


console.log(res);//return false

It should return true because in my string there is also 'ba', but it return false.

Upvotes: 0

Views: 1384

Answers (1)

Federico Piazza
Federico Piazza

Reputation: 30995

Same as Phil commented in your question, you have to get rid of the character class:

[^(foo|bar)]
^-- here --^

Character classes are used to match (or not match if you use ^) specific unsorted characters.

Just use:

var patt = new RegExp("(?:foo|bar)");// words from dictionary

If you want to ensure that all the string matches your regex, you can use:

^(?:foo|bar)+$

Working demo

If you want to capture the invalid words, you can use a regex with capturing groups like this:

^(?:foo|bar)+|(.+)$

Working demo

Match information

MATCH 1
1.  [9-11]  `ba`

Upvotes: 1

Related Questions