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> ## Disabling Scripting

> By default, scripting in JSP pages is valid. Since scripting can make pages difficult to maintain, some JSP page authors or page authoring groups may want to follow a methodology where scripting elements are not allowed.

> You can invalidate scripting for a group of JSP pages with `deploytool` by setting the value of the Scripting Invalid checkbox in the JSP Properties tab of a WAR. For information on how to define a group of JSP pages, see Setting Properties for Groups of JSP Pages. When scripting is invalid, scriptlets, scripting expressions, and declarations will produce a translation error if present in any of the pages in the group. Table 19-1 summarizes the scripting settings and their meanings:

> Table 19-1 Scripting Settings
> JSP Configuration | Scripting Encountered
> --- | ---
> unspecified | Valid
> `false` | Valid
> `true` | Translation Error

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