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(""); //falsecheck if letter is uppercase javascript
const isUpperCase = (string) => /^[A-Z]*$/.test(string)capitalize in javascript
const name = 'flavio'
const nameCapitalized = name.charAt(0).toUpperCase() + name.slice(1)to capital case javascript
const toCapitalCase = (string) => {
return string.charAt(0).toUpperCase() + string.slice(1);
};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")) // falsecapitalize a string javascript
const Capitalize = function(string){
return string[0].toUpperCase + string.slice(1).toLowerCase;
}Copyright © 2021 Codeinu
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