Find word with regex in Javascript

Question

How can I find a word with regular expression in Javascript?

For example:

http://127.0.0.1/w/?id=2&tab=wow

I want to know if this link contains the word 'tab'.

possible duplicate of Determining whether a string has a substring (word) — Felix Kling
– Felix Kling, Commented May 2, 2012 at 22:51

Alan Geleynse · Accepted Answer · 2012-05-02 22:50:05Z

3

var string = 'http://127.0.0.1/w/?id=2&tab=wow'
var containsTab = string.indexOf('tab') > -1

Or if you really want to use a regex:

var containsTab = string.match(/tab/);

edited May 2, 2012 at 22:50

answered May 2, 2012 at 22:37

Alan Geleynse

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4 Comments

David Thomas Over a year ago

Tab could be contained in a string and still return an index of zero. indexOf() returns -1 for not-found.

Marko Dumic Over a year ago

Since this is an accepted answer, please update your regexp to include word boundaries, like this /\btab\b/. This is so that words like stable do not trigger a match.

jahroy Over a year ago

@Marko - the OP didn't mention anything about NOT finding the word stable.

Marko Dumic Over a year ago

@jahroy - In fact he was pretty clear by asking for word and not a substring. (Maybe he even wanted to know whether there is a query string parameter named tab but didn't ask properly; I'm not going into that.)

Ry- · Accepted Answer · 2012-05-02 22:38:08Z

1

jQuery is not a language. It's a library written for JavaScript.
You don't need a regular expression.

Use indexOf.

var str = 'http://127.0.0.1/w/?id=2&tab=wow';

if(str.indexOf('tab') > -1) {
    // Contains string
} else {
    // Doesn't
}

answered May 2, 2012 at 22:38

Ry-♦

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3 Comments

Marko Dumic Over a year ago

Does the string stable contain the word tab? In your case, yes. And this is obviously wrong answer.

Ry- Over a year ago

@MarkoDumic: Yes, stable does contain the word tab.

jahroy Over a year ago

The OP mentions nothing about exluding stable.

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