I need a regular expression that will only match to the String if it ends with the target that I am looking for. I need to locate a file with a specific extension, problem is this extension also comes in other files. For example I have two files named
B82177_2014-07-08T141507758Z.ccf
and
B82177_2014-07-08T141507758Z.ccf.done
I only want to grab the first of these and my pattern is:
.*\.ccf
but this grabs both.
Any suggestions appreciated, I am a newbie to regular expressions.
3 Answers
Use an end anchor ($):
.*\.ccf$
This will match any string that ends with .ccf, or in multi-line mode, any line that ends with .ccf.
$ is used to match the end of the string. and can be used like
"string"$
like
xyz$
if you want to end with xzy
VanilaJS function base example
function isValidUrl(x){
let expression = /[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_\+.~#?&//=]*)?/gi;
let regex = new RegExp(expression);
return x.match(regex) ? true : false
}
console.log( isValidUrl(') ) // true
console.log( isValidUrl('nothing') ) // false
