how to get ascii from the char js code example

Example 1: javascript convert between string and ascii

let ascii = 'a'.charCodeAt(0); // 97
let char = String.fromCharCode(ascii); // 'a'

Example 2: character to ascii in js

'a'.charCodeAt(0)//returns 97, where '0' is the index of the string 'a'

Example 3: get ascii value of char javascript

word = userInput[0]; //abc
var sum =0;
for(i=0;i<word.length;i++)
{
    sum = sum + word.charCodeAt(i);
}
console.log(sum); //294