使用正则表达式拆分字符串，使其成为没有空元素的数组

Question

Here, I have example javascipt string:

example_string = "Answer 1| Answer 2| Answer 3|";

I am trying to get array like this using regular expression:

Array ["Answer 1", " Answer 2", " Answer 3"]

I have tried:

result = example_string.split('/[|]+/g');

and also with the following patterns

'/[|]+/g'
'/[|]+\b/g'
'/[|]+[^$]/g'

And I am still getting an array with empty element at the end of it:

 Array ["Answer 1", " Answer 2", " Answer 3", ""]

That cause me lot of trouble. Does anyone know where I am making mistake in my pattern or how to fix it?

Answer 1

I always liked matching everything I always hated split but:

Regex for splitting: (\\|(?!$)) DEMO

Matching instead of splitting:

Regex: (?:([\\w\\s]+)\\|?)

You can even use [^\\|]+ To match whatever you have to match BUT |

DEMO

Answer 2

There is no mistake. This is absolutely correct behavior (how would split know that this is not a CSV file with the last column having an empty value?). If you know your string always ends in | , you could remove the last one first manually. Or you could just take away the last element of the array if it is empty. However, I can't seem to find a possibility (in JavaScript) to tell the built-in split function to omit empty results.