Validating special characters in JQUERY

function isValid(str){
return !/[&\[\]\\’/()\\””]/g.test(str);
}

function ValidateSpecialChar()
{
var ErrorMsg = “Special Charectors & [ ] ‘ / ( ) \\ \” are not allowed in”;
var IsValid=1;

var PrenomTxt = $(‘#Prenom’).val();
var NomDeFamilleTXT = $(‘#NomDeFamille’).val();

if(isValid(PrenomTxt) == false)
{
ErrorMsg = ErrorMsg +”\n -First name”;
IsValid =0;

}
if(isValid(NomDeFamilleTXT) == false)
{

ErrorMsg = ErrorMsg +”\n -Last name”;
IsValid =0;
}

if(IsValid ==0)
{
alert(ErrorMsg);
return false;
}
return true;
}