replace-all-digits-with-characters_0310.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>replace-all-digits-with-characters</title>
</head>
<body>
    
</body>
<script>
const s = "a1c1e1";

console.log(replaceDigits(s));
/**
 * @param {string} s
 * @return {string}
 */
function replaceDigits(s) {
    let arr = s.split("");
    for (let i = 1; i < arr.length; i+=2) {
        arr[i] = shift(String(arr[i-1]), Number(arr[i]));
    }
    return arr.join("");
};

function shift(c, x) {
    let r = c.charCodeAt(0) + x;
    return String.fromCharCode(r);
}

</script>
</html>