Regular expressions that filter out special characters in the opposite way

Regular expressions that filter out special characters in the opposite way

// uppercase and lowercase letters, numbers, dashes in dashes-and underscores _ var regex=/^[a-za-z0-9-_]*$/g;//want to add a different condition, in the brackets inside the added can

Enclosed are two regular expressions in English and Chinese:

// Chinese representation  of regular expressions var reg_zh=/^[\u4e00-\u9fa5\uf900-\ufa2d]*$/;

// the English representation  of regular expressions var reg_en =/^[a-za-z]+$/;

numeric representation of regular expressions
var reg_number =/^[0-9]+$/;

Regular expressions that filter out special characters in the opposite way