Stuck with regex expression in Javascript

Question

I have to test a string like this one in javascript:

var str = "eleme_eus = \'Generikoa_Erlijioa\' or eleme_eus like \'Eliza_igles_a\' or eleme_eus like \'Parroki_a\' or eleme_eus like \'Erm_ita\' or eleme_eus like \'Komen_tua\' or eleme_eus like \'Santutegia\'";

I've been trying to create a regex to do so, but I cannot pass the \' part.

For now, I have (working):

var regex = /\w\s(=|like)\s/;

After that, I've tried scaping the backslash, the quotation mark... always false.

I just need to get to the "or/and" part, after that it repeats itself.

Thank you in advance.

EDIT:

With both websites (thx), I've come to this expression:

\w+[-\w]*\s(=|like)\s\\\'\w+\\\'(\s(and|or)\s\w+[-\w]*\s(=|like)\s\\\'\w+\\\')*

but if I test it in the console (Chrome)...

regex.test("field-name like \'word\' or field-name like \'word_word\'");

I suggest using tools like this to test our regex

George
– George

2017-04-10 14:54:37 +00:00
Commented Apr 10, 2017 at 14:54 — George
– George, Commented Apr 10, 2017 at 14:54

cнŝdk · Accepted Answer · 2017-04-10 14:55:09Z

3

Well here you need to escape both the / and the ', like this:

var regex = /\w\s(=|like)\s\\\'\w+\\\'/;

You can see it's correct in Regex101 Demo.

answered Apr 10, 2017 at 14:55

cнŝdk

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3 Comments

Sergio Tx Over a year ago

I see it working in that site and I already tested that. But regext.test("...") returns always false :S

cнŝdk Over a year ago

@SergioTx Can you please update you question with you whole code?

Sergio Tx Over a year ago

OK, added some more info.

anubhava · Accepted Answer · 2017-04-10 15:30:38Z

2

This regex should work for you:

var re = /\w+[-\w]*\s(?:=|like)\s'\w+'(?:\s(?:and|or)\s\w+[-\w]*\s(?:=|like)\s'\w+')*/g;

RegEx Demo

var str = "field-name like 'word' or field-name like 'word_word'";
re.test(str);
//=> true

str = "eleme_eus = \'Generikoa_Erlijioa\' or eleme_eus like \'Eliza_igles_a\' or eleme_eus like \'Parroki_a\' or eleme_eus like \'Erm_ita\' or eleme_eus like \'Komen_tua\' or eleme_eus like \'Santutegia\'";
"eleme_eus = 'Generikoa_Erlijioa' or eleme_eus like 'Eliza_igles_a' or eleme_eus like 'Parroki_a' or eleme_eus like 'Erm_ita' or eleme_eus like 'Komen_tua' or eleme_eus like 'Santutegia'"    
re.test(str);
//=> true

Your input doesn't have literal backslashes because \' will be interpreted as just single '.

answered Apr 10, 2017 at 15:30

anubhava

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1 Comment

Sergio Tx Over a year ago

In the end, the problem was that I was testing with a string without escaped backslashes. My original string had the backslashes already escaped. I marked this as correct because my question is answered by this, but I wrote it wrong xDDD Too many hours, sorry guys.

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