Regular expression for only characters a-z A-Z

Question

I don t know how to create a regular expression in JavaScript or jQuery   I want to create a regular expression that will check if a string contains only characters between a-z and A-Z with any arrangement   EDIT  When I tried to make regex      a-zA-Z s       to accept white spaces as well  It is not working  What could be the mistake   I am testing my regular expression at JavaScript RegExp Example  Online Regular Expression Tester

User · Accepted Answer

a-zA-Z      Change the   to   if you don t want to allow empty matches  References  Character classes          Anchors    and     Repetition        The   are just delimiters  it denotes the start and the end of the regex  One use of this is now you can use modifiers on it

User · Answer

a-zA-Z        Off the top of my head   Edit   Or if you don t like the weird looking literal syntax you can do it like this  new RegExp    a-zA-Z

User · Answer

Piggybacking on what the other answers say  since you don t know how to do them at all  here s an example of how you might do it in JavaScript   var charactersOnly    This contains only characters   var nonCharacters    This has                         non-characters    if  charactersOnly search    a-zA-Z         -1      alert  Only characters       if  nonCharacters search    a-zA-Z          alert  There are non characters         The   starting and ending the regular expression signify that it s a regular expression  The search function takes both strings and regexes  so the   are necessary to specify a regex   From the MDN Docs  the function returns -1 if there is no match   Also note  that this works for only a-z  A-Z  If there are spaces  it will fail

User · Answer

With POSIX Bracket Expressions  not supported by Javascript  it can be done this way      alpha       Any alpha character A to Z or a to z   or       alpha      s   to match strictly with spaces

User · Answer

This    a-z  g solves the problem   x000D   x000D  function pangram str        let regExp      a-z  g      let letters   str toLowerCase   replace regExp           document getElementById  letters   innerHTML   letters    pangram  GHV 2    hfr efg uor7 489   amp    knt lhtkjj ngnm       amp         x000D   lt h4 id  letters  gt  lt  h4 gt  x000D   x000D   x000D

[javascript] Regular expression for only characters a-z, A-Z

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