js regex to find multiple substrings in string

Question

I would like to find out if certain substrings exists in a string.

I have tried this:

x = "AAABBBCCC"
x.match(/(AAA|CCC)/)

However this resurns: Array [ "AAA", "AAA" ]

I would like to know exactly which substrings were present (e.g. Array [ "AAA", "CCC" ])

Is this possible?

A-H Karttunen · Accepted Answer · 2017-07-27 09:14:25Z

7

Now you have just one capture group with one value and it's returned if found.

If you add global flag to regex it returns all results

x.match(/(AAA|CCC)/g)

-> ["AAA", "CCC"]

answered Jul 27, 2017 at 9:14

A-H Karttunen

864 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Koushik Chatterjee · Accepted Answer · 2017-07-27 09:14:43Z

2

check for a global match, otherwise it will break when found the first

x = "AAABBBCCC"
x.match(/(AAA|CCC)/g)

answered Jul 27, 2017 at 9:14

Koushik Chatterjee

4,1933 gold badges20 silver badges32 bronze badges

Comments

Luuuud · Accepted Answer · 2017-07-27 09:14:55Z

0

This is possible using the g global flag in your pattern. Like so:

x.match(/(AAA|CCC)/g);

This will return ["AAA", "CCC"]. I really enjoy using RegExr when figuring out expressions and as a documentation.

answered Jul 27, 2017 at 9:14

Luuuud

4,4692 gold badges27 silver badges34 bronze badges

Comments

Yoky Ja · Accepted Answer · 2017-07-27 09:31:01Z

0

var regEx = new RegExp('(AAA|CCC)','g');
var sample_string="AAABBBCCC";
var result = sample_string.match(regEx);
document.getElementById("demo").innerHTML = result;

<p id="demo"></p>

answered Jul 27, 2017 at 9:31

Yoky Ja

11 bronze badge

Collectives™ on Stack Overflow

js regex to find multiple substrings in string

4 Answers 4

Comments

Comments

Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

4 Answers 4

Comments

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related