Regex Strong Password Validation( Should have 1 lowercase letter, 1 uppercase letter, 1 number, 1 special character and be at least 8 characters long)

function onChange(control, oldValue, newValue, isLoading) {
    if (isLoading || newValue == '') {
          return;
    }
  g_form.hideErrorBox('password');
       var pattern =/(?=(.*[0-9]))(?=.*[\!@#$%^&*()\\[\]{}\-_+=~`|:;"'<>,./?])(?=.*[a-z])(?=(.*[A-Z]))(?=(.*)).{8,}/ ;   // regex pattern
   if(!pattern.test(newValue)){
     g_form.showErrorBox('password', getMessage('Password Should have 1 lowercase letter, 1 uppercase letter, 1 number, 1 special character and be at least 8 characters long'));//show error messege
           g_form.setValue('password', '');
   }
}