JSFiddle - React, Tailwind, and code Playground

JavaScript

var re = /^[0-9a-zA-Z`!"?$%\^&*()_\-+={\[}\]:;@~#|<,>.'\/\\]+$/;

var n = 10000,
    passLength = 12,
    failCount = 0;

for (var i = 0; i < n; i++) {
    if (!re.test(randomId(passLength))) {
        failCount++;   
    }    
}

console.log(failCount);

function randomId(length, dictionary) {
    length = length || 6;
    
    var dictionary = dictionary || 'abcdefghijklmnopqrtsuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789`!"?$%^&*()_-+={[}]:;@~#|<,>.\'/\\',
        dictionarySize = dictionary.length,
        random = '';

    for (var i = 0; i < length; i++)
        random += dictionary.charAt(Math.floor(Math.random() * dictionarySize)); 
    
    return random;
}