How to check if string contains Latin characters only

Question

How to check if a string  contains  a-zA-Z  characters only   Example   var str    123z56

User · Answer

You can use regex     a-z  i test str     The i makes the regex case-insensitive  You could also do     a-z   test str toLowerCase

User · Answer

I m surprised that the answers here got so many upvotes when none of them really answer the question  Here s how to make sure that ONLY LATIN characters are in a given string   const hasOnlyLetters     value match    a-z    i     The    takes transforms something that s not boolean into a boolean value   It s exactly the same as applying a   twice  and in fact you can use as many   as you d like to toggle the truthiness multiple times    As for the RegEx  here s the breakdown         i The delimiter is a   and the i means to assess the statement in a case-insensitive fashion        The   means to look at the very beginning of a string  The   means to look at the end of the string  and when used together  it means to consider the entire string  You can add more to the RegEx outside of these boundaries for things like appending prepending a required suffix or prefix   a-z  This part says to look for all lowercase letters   The case-insensitive modifier means that we don t need to look at uppercase letters  too   The   at the end says that we should match whats in the brackets any number of times  That way  abc  will match instead of just  a  or  b   and so forth

User · Answer

Ahh  found the answer myself   if    a-zA-Z   test num       alert  Letter Found

User · Answer

All these answers are correct  but I had to also check if the string contains other characters and Hebrew letters so I simply used   if   str match     d               contains other characters as well

User · Answer

No jQuery Needed  if  str match   a-z  i            alphabet letters found

User · Answer

There is no jquery needed   var matchedPosition   str search   a-z  i   if matchedPosition    -1        alert  found

[javascript] How to check if string contains Latin characters only?

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