Ruby on Rails数据传递给javascript成为HTMLDIVELEMENT

Question

I'm trying to pass database value retrieved by ruby to javascript,to handle some div display.

Strange thing is,when I pass number(means I retrieve number from database and pass to js),it works fine,as follow,this load_web is a short int.

if (<%= @device.load_web %>==0)
{ $('.somediv').find('input,textarea,select').attr('disabled',true); }
});

But when I try same method,passing string to js,it returns me HTMLDIVElement,which is very strange.

if(<%= @device.brand%>=="apple")
    {
    alert("apple"); 
    }
    else
    {
    alert(<%= @device.brand %>);
    }

The data in my database for this colum is "apple",but the logic falls into else loop,and give me a "object HTMLDIVElement" message.

Why is so?

EDIT: I try use alert(<%= @device.brand %>.innerHTML); and get the following message:

Answer 1

Remember that erb tags just insert the result of the ruby code in them into your html template. So unless @device.brand is returning some properly formatted javascript (or a number), you probably want to wrap it in strings. Try this:

if("<%= @device.brand%>"=="apple")
    {
    alert("apple"); 
    }
    else
    {
    alert("<%= @device.brand %>");
    }