//capitalize only the first letter of the string.
function capitalizeFirstLetter(string) {
return string.charAt(0).toUpperCase() + string.slice(1);
}
//capitalize all words of a string.
function capitalizeWords(string) {
return string.replace(/(?:^|\s)\S/g, function(a) { return a.toUpperCase(); });
};// for lowercase on first letter
let s = "This is my string"
let lowerCaseFirst = s.charAt(0).toLowerCase() + s.slice(1)function capitalizeFirstLetter(string) {
return string.charAt(0).toUpperCase() + string.slice(1);
}
console.log(capitalizeFirstLetter('foo')); // Foofunction capitalizeFirstLetter(name) {
return name.replace(/^./, name[0].toUpperCase())
}let val = ' this is test ';
val = val.trim();
val = val.charAt(0).toUpperCase() + val.slice(1);
console.log("Value => ", val);/**** 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")) // false