markdown 正则表达式包含和排除

Posted 2021-05-06

two pattern
```javascript
let validate = (str) => {
	let required = /(\$.*\$)/i; // Regex include - tem que te-lo
	let blocked = /(\$\()/i; // Regex exclude - não tem que te-lo
	return required.test(str) && !blocked.test(str);
}
```

one pattern
```javascript
let validate = (str) => {
	let one = /(?=.*(\$.*\$))(?!.*(\$\())(.+)/i;
	return one.test(str);
}
```