javascript check if all capital letter

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Jannik
29 Jul 2018
1function isUpper(str) {
2    return !/[a-z]/.test(str) && /[A-Z]/.test(str);
3}
4
5isUpper("FOO"); //true
6isUpper("bar"); //false
7isUpper("123"); //false
8isUpper("123a"); //false
9isUpper("123A"); //true
10isUpper("A123"); //true
11isUpper(""); //false
12
source
Jona
26 Feb 2019
1var regex = /^(?=.*[a-z])(?=.*[A-Z])(?=.*[0-9])(?=.*[!#\*\?])(?=.{8,})/;
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