我如何在字母中上移一个字符？

Question

我正尝试从A移至B移至C ...，依此类推，在调用函数之后。我知道这是您将如何在Java中执行的操作，但是如何在javascript中执行此操作？

var letter = 'A';
letter++;


function drawOrganism() {
    var letter = "A"; //Initial Character
    var Organisms = 0;
    for (var col = 0; col <= organismArray.length - 1; col++) {
        for (var row = 0; row <= organismArray[col].length - 1; row++) {
            if (organismArray[col][row] == "*") {
                organismArray = howManyOrganisms(col, row, letter);
                letter++; // Moves up a Character
                Organisms++;
            }
        }
    }
    var printorganism = "";
    for (var i = 0; i <= 2; i++) {
        for (var j = 0; j <= 2; j++) {
            printorganism += organismArray[i][j];
        }
        printorganism += "<br>";
    }
    document.getElementById("drawOrganism1").innerHTML = printorganism;
}

Answer 1

您可以这样操作：

let letter = 65;
console.log(String.fromCharCode(letter)); // A
console.log(String.fromCharCode(letter + 1)); // B