So I have this code where I'd like to replace all single backslashes with 2 backslashes, for example: ---> \ I tried to do this by the following code:
string = string.replace(new RegExp(\, g), \\);
But apparently this doesn't work because I get the following error:
Uncaught SyntaxError: Invalid regular expression: //: at end of pattern
Any idea why?
The is a escape character for regular expressions, and also for javascript strings. This means that the javascript string \ will produce the following content :. But that single is a escape character for the regex, and when the regex compiler finds it, he thinks: nice, i have to escape the next character... but, there is no next character. So the correct regex pattern should be \. That, when escaped in a javascript script is \\.
So you should use:
string = string.replace(new RegExp(\\, g), \\);
as an alternative, and to avoid the javascript string escape, you can use a literal regex:
string = string.replace(/\/g, \\);
