[] JS JS passcode complexity (must contain letters, numbers, special symbols)

Copyright Notice: Welcome to reprint, please indicate the source! https://blog.csdn.net/willingtolove/article/details/90813860

# Scene One: The password must contain case  letters, numbers, special characters say, at least eight characters, up to 30 characters;

var pwdRegex = new RegExp('(?=.*[0-9])(?=.*[A-Z])(?=.*[a-z])(?=.*[^a-zA-Z0-9]).{8,30}');
  
if (!pwdRegex.test('A3b@C2dEF')) {
    alert("您的密码复杂度太低（密码中必须包含大小写字母、数字、特殊字符），请及时修改密码！");
}

 # Scene Two: The password must contain letters (case insensitive), numbers, special characters say, at least eight characters, up to 30 characters;

var pwdRegex = new RegExp('(?=.*[0-9])(?=.*[a-zA-Z])(?=.*[^a-zA-Z0-9]).{8,30}');
 
if (!pwdRegex.test('a2b3c$def')) {
    alert("您的密码复杂度太低（密码中必须包含字母、数字、特殊字符），请及时修改密码！");
}

# Scene Three: password must contain letters (case insensitive), numbers, at least 8 characters, up to 30 characters;

var pwdRegex = new RegExp('(?=.*[0-9])(?=.*[a-zA-Z]).{8,30}');
  
if (!pwdRegex.test('a2b3c4d5')) {
    alert("您的密码复杂度太低（密码中必须包含字母、数字），请及时修改密码！");
}

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original address: https://www.cnblogs.com/willingtolove/p/10976328.html
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