Answers for "javascript string 1st character uppercase without inbuilt function"

first letter string uppercase javascript

function capitalizeFirstLetter(string) {
  return string.charAt(0).toUpperCase() + string.slice(1);
}

console.log(capitalizeFirstLetter('foo')); // Foo

js first letter to uppercase

function capitalizeFirstLetter(name) {
    return name.replace(/^./, name[0].toUpperCase())
}