RegExp Writing

Basically what its doing is its looking for anyname with .xlsx or .docx

 

Explanation:

() --> Groups multiple tokens together and creates a capture group for extracting a substring or using a backreference.

 

(.) -->Matches any character except line breaks + -->Matches 1 or more of the preceding token. | -->Acts like a boolean OR. Matches the expression before or after the |

 

If this helped , please mark as correct answer !

 

Thank You Murali

 

Hi,

this expression will :

• match any string ending with either xlsx or docx
• store the first letter in the first match group
• store xlsx or docx in the second match group

if you want the character before xlsx or docx is a dot, the expression must be :

(.)+\.(xlsx|docx)

If you want to store the name without extension, and not the first character, the expression must be :

(.+)\.(xlsx|docx)

If you don't want to store name value in match group, remove parenthesis:

.+\.(xlsx|docx)

If you don't want to store extension in match group, add ?: after the opening parenthesis

.+\.(?:xlsx|docx)

you can play with this on online services like this one