get the first character of a string in an array javascript code example

Example 1: how to get the first character of a string in javascript

let str = 'John Wick'
let firstChar = str.charAt(0) 
console.log(firstChar); // "J"

Example 2: javascript get first character of string

var str="Hello Folks!"
var firstStringChar = str.charAt(0); //H

Example 3: Check first character of string in array and compare to another array

a = ['ghis', 'rs', 'ea','eat' ,'nentence']

let word = ''
function check(arr){
  let color = ['green']
  for(let i = 0; i < arr.length;i++){
    word += arr[i][0]
  }
 
  for(let j = 0;j < color.length;j++){
    if(word == color[j]){
     return true
    }
  }
  return false
}
console.log(check(a))