RegExp Tips 'Password'

需求

• 展示密码强度

实现

const PasswordRegExp = new RegExp('^(?=.*[a-zA-Z])(?=.*\\d)[a-zA-Z\\d\\W]{8,63}$');
const AlphanumericRegExp = new RegExp('^(?=.*[a-zA-Z])(?=.*\\d)[!-~]+$'); //英数字混在
const UpperLowerLetterRegExp = new RegExp('^(?=.*[A-Z])(?=.*[a-z])[!-~]+$'); //大文字小文字混在
const SymbolRegExp = new RegExp(
    "^(?=.*[!\"#$%&''()\\^\\-@\\[;:\\],./|`{+*}<>?_])[!-~]+$",
); //記号混在

options

• escape-string-regexp npm包
• 转换后端（java）直接丢过来的正则
• 下面是核心代码：

export default function escapeStringRegexp(string) {
	if (typeof string !== 'string') {
		throw new TypeError('Expected a string');
	}

	// Escape characters with special meaning either inside or outside character sets.
	// Use a simple backslash escape when it’s always valid, and a `\xnn` escape when the simpler form would be disallowed by Unicode patterns’ stricter grammar.
	return string
		.replace(/[|\\{}()[\]^$+*?.]/g, '\\$&')
		.replace(/-/g, '\\x2d');
}