JS regular expression multi-line

Question

This one seems like it has a very simple answer, yet I can't find it anywhere. I have a regular expression that is quite large, how do I put in some line breaks in the expression itself so I don't have to keep scrolling horizontally through the code to see it all?

I don't normally use word-wrap, and the IDE I'm using doesn't even offer it anyway.

http://stackoverflow.com/questions/12317049/how-to-split-a-long-regular-expression-into-multiple-lines-in-javascript — Loamhoof, Apr 22 '13 at 14:28

score 2 · Answer 1 · answered Apr 22 '13 at 14:30

2

A line break in a string would normally be a \ at the end of the line :

var mystring "my string \
is on more \
than one line";

var re = new RegExp(mystring, "gim");

answered Apr 22 '13 at 14:30

Tom Elmore

1,980
15
20

score 1 · Answer 2 · edited May 23 '17 at 11:43

1

You could use RegExp and .join() to convert and concat a string.

var myRegExp = RegExp(['/^([a-zA-Z0-9_.-])+'
              ,'@([a-zA-Z0-9_.-])+'
              ,'\.([a-zA-Z])+([a-zA-Z])+/'].join(''));

The answer has been linked to here as well.

How to split a long regular expression into multiple lines in JavaScript?

edited May 23 '17 at 11:43

Community

1
1

answered Apr 22 '13 at 14:39

Nery

56
4

JS regular expression multi-line

2 Answers2