return string.charAt(0).toUpperCase() + string.slice(1);
How to use
let string = 'hello world';
console.log(ucFirst(string)); // output: Hello World
Details of each function which we used to capitalize the first letter of a given string.
charAt() return the character at a certain index of a string. Here
string.charAt(0) means selecting first character.
toUpperCase() function convert the string to uppercase letters. Here
string.charAt(0).toUpperCase() means select the first character and convert it to uppercase
slice() function return the selected elements from an array. Here
string.slice(1) will allow us to get the rest of the string and remove the first letter.
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