javascript string replace regex

Question

Syntax error.

var str = "D:\Imaging\EMail\31844529039.pdf";
str = str.replace(/\/g, "\\");
alert(str);

Please help required output is D:\\ImagingEMail\\31844529039.pdf

This one is asked multiple times before. Like http://stackoverflow.com/q/14624295/508702 and http://stackoverflow.com/q/8684975/508702 — Bas Slagter, Jul 01 '13 at 11:07
you can see out put not getting ... please see alert it alert D:ImagingEMail31844529039.pdf instead of D:\\Imaging\\EMail\\31844529039.pdf — Ramesh, Jul 01 '13 at 11:10

Denys Séguret · Answer 1 · 2013-07-01T11:09:39.863

4

The \ is an escaping sign both in string literals and in regex literals, so you must escape it. Use

var str = "D:\\Imaging\\EMail\\31844529039.pdf";
str = str.replace(/\\/g, "\\\\");

This builds this string :

D:\\Imaging\\EMail\\31844529039.pdf

Special characters in String literals are described here.

Special characters in regular expression literals are described here.

edited Jul 01 '13 at 11:09

answered Jul 01 '13 at 11:03

Denys Séguret

You put two backslash in the string literal, and there's only one in the resulting string. – Denys Séguret Jul 01 '13 at 11:07
you can see out put not getting ... please see alert it alert D:ImagingEMail31844529039.pdf instead of D:\\Imaging\\EMail\\31844529039.pdf – Ramesh Jul 01 '13 at 11:08

score 2 · Answer 2 · answered Jul 01 '13 at 11:05

2

Use

str = str .replace(/\\/g, "\\\\");

answered Jul 01 '13 at 11:05

rags

2 Answers2