Matching a Forward Slash with a regex

Question

I don t have much experience with JavaScript but i m trying to create a tag system which  instead of using   or    would use     var start      ig       Match  var word       w   ig     abc Match   How could I use a   instead of the    I ve tried doing var slash       and adding   slash    but that failed

User · Answer

You can escape it by preceding it with a \ (making it \/), or you could use new RegExp('/') to avoid escaping the regex.

See example in JSFiddle.

'/'.match(/\//)            // matches /
'/'.match(new RegExp('/')  // matches /

User · Answer

If you want to use   you need to escape it with a    var word        w   ig

User · Answer

Forward Slash is special character so you have to add a backslash before forward slash to make it work   patterm      0-9  2     -        a-zA-Z  3     -        0-9  4       where    represents search for   In this way you

User · Answer

For me  I was trying to match on the   in a date in C    I did it just by using        string pattern      0-9    0-9         0-9    0-9         d 4     string text    Start Date  4 1 2018    Match m   Regex Match text  pattern    if  m Success          Console WriteLine match Groups 0  Value       4 1 2018   else       Console WriteLine  Not Found         JavaScript should also be able to similarly use

User · Answer

I encountered two issues related to the foregoing  when extracting text delimited by   and    and found a solution that fits both  other than using new RegExp  which requires      at the start   These findings are in Chrome and IE11      The regular expression            g   does not work   I think the    is interpreted as the start of a comment in spite of the escape character   The regular expression  equally valid in my case though not in general      b          b g   does not work either   I think the second   terminates the regular expression in spite of the escape character   What does work for me is to represent   as  x2F  which is the hexadecimal representation of     I think that s more efficient and understandable than using new RegExp  but of course it needs a comment to identify the hex code

User · Answer

You need to escape the   with a         ig    matches

User · Answer

You can also work around special JS handling of the forward slash by enclosing it in a character group  like so   const start        g    dev null  match start           gt              const word         w   ig    dev null  match word            gt     dev     null

User · Answer

You can escape it like this       ig      Matches     or just use indexOf  if str indexOf       gt  -1

User · Answer

In regular expressions      is a special character which needs to be escaped  AKA flagged by placing a   before it thus negating any specialized function it might serve      Here s what you need   var word        w   ig        abc Match   Read up on RegEx special characters here  http   www regular-expressions info characters html

[javascript] Matching a Forward Slash with a regex

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