Панграм JavaScript
function isPangram(string) {
var regex = /([a-z])(?!.*\1)/gi;
return (string.match(regex) || []).length === 26;
}
Anna
function isPangram(string) {
var regex = /([a-z])(?!.*\1)/gi;
return (string.match(regex) || []).length === 26;
}