js random string regular method ([A~Z],[a~z],[0~9])

This time I will bring you the random string of jsregular method ([A~Z],[a~z],[0~9]), the random string regular method of js ( [A~Z],[a~z],[0~9])NotesWhat are the following? Let’s take a look at the actual cases.

function ranNum(l) { return Math.floor(Math.random() * (l[1] - l[0])) + l[0]; }function r(len) { var s = "",t; for (; len > 0; len--) { t = ranNum([[65, 91], [97, 123],[0, 10] ][ranNum([0, 3])]); s = s + (t > 10 ? String.fromCharCode(t) : t.toString()); } return s; }console.log("测试",r(10));

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