javascript string replace regex [duplicate]

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 stackoverflow.com/q/14624295/508702 and stackoverflow.com/q/8684975/508702 — Bas Slagter
– Bas Slagter, Commented Jul 1, 2013 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
– Ramesh, Commented Jul 1, 2013 at 11:10

Denys Séguret · Accepted Answer · 2013-07-01 11:09:39Z

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.

answered Jul 1, 2013 at 11:03

Denys Séguret

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2 Comments

You put two backslash in the string literal, and there's only one in the resulting string.

you can see out put not getting ... please see alert it alert D:ImagingEMail31844529039.pdf instead of D:\\Imaging\\EMail\\31844529039.pdf

rags · Accepted Answer · 2013-07-01 11:05:21Z

2

Use

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

answered Jul 1, 2013 at 11:05

rags

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