function newClass(){
this.firstName="frank";
this.toUc=String.toUpperCase;
this.toString=function(){
return this.toUc(this.firstName);
}
}
var nc=new newClass();
alert(nc);//在IE中没反应。。
function newClass(){
this.firstName="frank";
this.toUc=String.toUpperCase;
this.toString=function(){
return this.toUc(this.firstName);
}
}
var nc=new newClass();
alert(nc);//在IE中没反应。。

<form action="#" name="test" method="post" onSubmit="return doSubmit(this);">
First name: <input type="text" name="firstName">
<br>
Last name:<input type="text" name="lastName">
<br>
<input type="button" value="submit" >