I need get from string, piece after last \ or /, that is from this string C:\fake\path\some.jpg result must be some.jpg

I tried this:

var str = "C:\fake\path\some.jpg";
var newstr = str.replace(/[^\\\/]+$/, "");
alert(newstr);

/

but not works, what is right regex for this?

I need get from string, piece after last \ or /, that is from this string C:\fake\path\some.jpg result must be some.jpg

I tried this:

var str = "C:\fake\path\some.jpg";
var newstr = str.replace(/[^\\\/]+$/, "");
alert(newstr);

http://jsfiddle/J4GdN/3/

but not works, what is right regex for this?

• javascript
• regex

• 4 Well your str needs to be var str = "C:\\fake\\path\\some.jpg"; – epascarello Commented May 1, 2013 at 13:59

3 Answers 3

You don't need a regex to do it, this should work:

var newstr = str.substring(Math.max(str.lastIndexOf("\\"), str.lastIndexOf("/")) + 1);

Well your str needs to be escaped \\ for it to work correctly. You also need to use match since the reg exp you are using is matching the end, not the start.

var str = "C:\\fake\\p\ath\some.jpg";
var newstr = str.match(/[^\\/]+$/);
alert(newstr);

JSFiddle

first, let's escape the backslashes

var str = "C:\\fake\\path\\some.jpg";
var newstr = str.replace(/[^\\\/]+$/, "");
alert(newstr);

now, you are removing some.jpg instead of getting it as the result.

here are a few options to fix this:

1.replace with a regex

var newstr = str.replace(/.*[\\\/]/, "");

2.split with regex (doesn't work in all browsers)

var tmp = str.split(/\\|\//);
var newstr = tmp[tmp.length-1];

4.as said here, match

var newstr = str.match(/.*[\\\/](.*)/)[1];