Capitalize first letter of each word in JS

Question

I\'m learning how to capitalize the first letter of each word in a string and for this solution I understand everything except the word.substr(1) portion. I see that it\'s a

Answer 1

Just map through if an array set the first letter as uppercase and concatenate with other letters from index 1. The array isn't your case here.

const capitalizeNames = (arr) => {
arr.map((name) => {
    let upper = name[0].toUpperCase() + name.substr(1)       
    console.log(upper)
})

}