Match exact string

Question

What is the regular expression  in JavaScript if it matters  to only match if the text is an exact match  That is  there should be no extra characters at other end of the string   For example  if I m trying to match for abc  then 1abc1  1abc  and abc1 would not match

User · Answer

For the begining of the line     for the end of it  Eg    var re     abc      Would match  abc  but not  1abc  or  abc1   You can learn more at https   developer mozilla org en-US docs Web JavaScript Guide Regular Expressions

User · Answer

Use the start and end delimiters   abc

User · Answer

It depends  You could  string match   abc      But that would not match the following string   the first 3 letters of the alphabet are abc  not abc123   I think you would want to use  b  word boundaries     x000D   x000D  var str    the first 3 letters of the alphabet are abc  not abc123   x000D  var pat     b abc  b g  x000D  console log str match pat    x000D   x000D   x000D    Live example  http   jsfiddle net uu5VJ   If the former solution works for you  I would advise against using it    That means you may have something like the following   var strs     abc    abc1    abc2   for  var i   0  i  lt  strs length  i          if  strs i      abc               do something            else             do something else           While you could use   if  str i  match   abc  g           do something      It would be considerably more resource-intensive  For me  a general rule of thumb is for a simple string comparison use a conditional expression  for a more dynamic pattern use a regular expression   More on JavaScript regexes  https   developer mozilla org en JavaScript Guide Regular Expressions

[javascript] Match exact string

Examples related to javascript

Examples related to regex