有人会正则吗，正则表达式的

Question

3到12个字符串 不能重复出现，数字和字母的组合

Answer 1

    var re = /^(?!.*([a-z\d])\1{2})(?=.*[a-z])(?=.*\d)[a-z\d]{3,12}$/i
    console.log(re.test('ab'))//false
    console.log(re.test('abcdfg'))//false
    console.log(re.test('abc123'))//true
    console.log(re.test('abcdef123456'))//true
    console.log(re.test('abcdefgh123456'))//false

有帮助麻烦点下【采纳该答案】，谢谢~~