Javascript快速输出所有字母 - js全字母输出

Posted Rudon滨海渔村

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核心代码

var cA = String.fromCharCode(65); // 'A'
var ca = String.fromCharCode(97); // 'a'

完整例子

<!DOCTYPE html>
<html lang="en">
<head>
    <title>Document</title>
</head>
<body>
    <h2 id="codes">Haha</h2>
    <script>
        function getA2Z () 
            let res = [];
            let startNum = 65; //  A=65 a=97
            for (let i=0; i<=25; i++) 
                res.push(String.fromCharCode(startNum + i));
            
            return res;
        

        var az = getA2Z();
        document.getElementById('codes').innerHTML = JSON.stringify(az);
        // ["A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z"]
    </script>
</body>
</html>

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