Why am I getting a / in my regex output?
Question
My untouched HTML looks like this:
<body class="home bc-hide-1bc-hide-2">
My JS looks like this:
var c = $("body").attr("class").replace(/(bc-hide-\d)/,/$& /);
$("body").attr("class", c);
The goal is to get my HTML to look like this (note the space between bc-hide-1 and bc-hide-2):
<body class="home bc-hide-1 bc-hide-2">
Using the JS above, my output actually ends up with a / in front of each instance of bc-hide-# (seen below):
<body class="home /bc-hide-1 /bc-hide-2">
I haven't had to do too much with regex and I have been poking around the documentation but I am just not finding what I need to stop that / from outputting. Any help is greatly appreciated!
Thanks!
2 answers
solution1
5 ACCPTED 2012-05-25 03:10:46
To answer the actual question:
Why am I getting a / in my regex output?
Because you have two slashes in the replacement: /$& / .
The replacement should be a string, not a regular expression, and /$& /.toString() (the string representation of the expression) is "/$& /" .
Just use '$& ' .
But I agree with Evan, you should fix the code that generates the HTML.
solution2
1 2012-05-25 03:10:51
var c = $("body").attr("class").replace(/(bc-hide-\d)/,'$& ');
The replacement is a string, not a regex. JS turned the regex you passed in into a string, including the slashes.
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