javascript check if all capital letter
function isUpper(str) {
return !/[a-z]/.test(str) && /[A-Z]/.test(str);
}
isUpper("FOO"); //true
isUpper("bar"); //false
isUpper("123"); //false
isUpper("123a"); //false
isUpper("123A"); //true
isUpper("A123"); //true
isUpper(""); //falseregex for lowercase letters js
function hasLowerCase(str) {
return (/[a-z]/.test(str));
}how to check if the first letter of a string is capitalized or uppercase in js
/**** Check if First Letter Is Upper Case in JavaScript***/
function startsWithCapital(word){
return word.charAt(0) === word.charAt(0).toUpperCase()
}
console.log(startsWithCapital("Hello")) // true
console.log(startsWithCapital("hello")) // falsecheck if letter is uppercase javascript
isUpperCase('A') // true
isUpperCase('a') // falsejavascript check if string contains capital letter
function startsWithCapital(word){
return word.charAt(0) === word.charAt(0).toUpperCase()
}Copyright © 2021 Codeinu
Forgot your account's password or having trouble logging into your Account? Don't worry, we'll help you to get back your account. Enter your email address and we'll send you a recovery link to reset your password. If you are experiencing problems resetting your password contact us
