Regular expression for password in javascript

Question

I have used regular expression validator in aspx form.I have used this express ((?=.*\\d)(?=.*[az])(?=.*[AZ])(?=.*\\W).{6,15}) ,working fine.

I am trying to use same expression in javascript,but that fail why so ?

In javascript

var regularExpression  = ((?=.*\d)(?=.*[a-z])(?=.*[A-Z])(?=.*\W).{6,15})


if (regularExpression.test(newPassword)) {
    alert("Password must be at least 6 characters, not more than 15 characters, and must include at least one upper case letter, one lower case letter, one special character and one numeric digit.");
    return false;
} 

Answer 1

you should use / instead of ( for RegExp

var regularExpression  = /(?=.*\d)(?=.*[a-z])(?=.*[A-Z])(?=.*\W).{6,15}/;

if (regularExpression.test(newPassword)) {
    alert("Password must be at least 6 characters, not more than 15 characters, and must include at least one upper case letter, one lower case letter, one special character and one numeric digit.");
    return false;
}