javascript - 如果文本中存在大写字母或数字，则测试返回 false

Question

我试过的正则表达式包含如下(大写)。以下返回 true

self.upperCharCheck = false ; //has to be false by default
var temp ="(?=(.*[^A-Z]))";
self.testUpperCase = new RegExp(temp);
self.upperCharCheck = (self.testUpperCase.test(self.newPassword));

如果不存在大写字母，我希望 self.upperCharCheck 为真，否则如果存在大写字母，则为假。

Answer 1

/[A-Z0-9]/ 应该是检查字符串是否包含大写字母或数字所需的全部内容:

var upperRegex = /[A-Z0-9]/;

console.log(upperRegex.test('should be false'));
console.log(upperRegex.test('should be True'));
console.log(upperRegex.test('should also 0 be true'));

console.log('===');
//This will return false if an uppercase letter or a number is in the string
var upperRegex2 = /^[^A-Z0-9]+$/;

console.log(upperRegex2.test('should be true'));
console.log(upperRegex2.test('should be False'));
console.log(upperRegex2.test('should also 0 be false'));