Use JavaScript in JSP pages to get the values that are placed in the request or session in the background

In the JSP page. JavaScript is often used, but out of JavaScript gets the value stored in Request,session, application. For example, the following is the get value in Request:

If the background is:

Request.setattribute ("value", "123");

In JavaScript in the foreground, for example, the following methods are available:

1:var val = "${value}";

2:var val = "<%=request.getattribute (" value ")%>";

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Use JavaScript in JSP pages to get the values that are placed in the request or session in the background