如何创建一个 aphabets 数组，从中提取随机的大写和小写字母？

Question

I need to create an array from which random uppercase and lowercase alphabets can be used to generate a password. Could you tell me how to create such an array and add Math.random() to it?

Answer 1

Users Marius and Mina commented on your question suggesting the answers from this post and this post -- which are valid and versatile answers. As an alternative, the following function returns a string of a fixed length containing random uppercase and lowercase letters -- without the use of a long string literal containing the alphabet:

 function generateCode(length) { var code = ''; for(var i = 0; i < length; i++) { var character = String.fromCharCode(Math.floor(Math.random()*26)+97); if(Math.floor(Math.random()*2) == 1) { character = character.toUpperCase(); } code+= character; } return code; } console.log(generateCode(12));

Hopefully this is useful to you, although the passcode it generates may not be particularly secure as a password. The questions linked above have additional comments and responses which contain more resources and answers to your question. Their answers may generate passwords with more security and randomness.