What regular expression do I need to check for some non-latin characters?

Question

I am checking a field if it is Latin Characters or not.

var foreignCharacters = $("#foreign_characters").val();
var rlatins = /[\u0000-\u007f]/;

if (rlatins.test(foreignCharacters)) {
  alert("This is Latin Characters");
} else {
  alert("This is non-latin Characters");    
}

This works well, but I would like to change it so when I enter any non-latin characters, such as chinese characters, along with a space(which is within that range I am using currently) it will still say it is non-latin characters.

How can I change the regular expression I have to do that?

Answer 1

Just test for the presence of non-ascii characters instead of testing for the presence of ascii characters:

var foreignCharacters = $("#foreign_characters").val();
var rforeign = /[^\u0000-\u007f]/;

if (rforeign.test(foreignCharacters)) {
  alert("This is non-Latin Characters");
} else {
  alert("This is Latin Characters");    
}