Custom HTML tag attributes are not rendered by JSF

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This is by design. You can only specify attributes which are supported by the JSF component itself (i.e. it’s listed in the attribute list in the tag documentation). You can’t specify arbitrary additional attributes, they will all be plain ignored.

There are several ways to solve this:

  1. If you’re already on JSF 2.2+, simply specify it as passthrough attribute:

    <html ... xmlns:a="http://xmlns.jcp.org/jsf/passthrough">
...
<h:inputText ... a:autocorrect="off" />

    (note that I’m using xmlns:a instead of xmlns:p to avoid clash with PrimeFaces default namespace)

    Or:

    <html ... xmlns:f="http://xmlns.jcp.org/jsf/core">
...
<h:inputText ...>
    <f:passThroughAttribute name="autocorrect" value="off" />
</h:inputText>

  2. Create a custom renderer. You can find several concrete examples in below answers:

    • How to let JSF pass through HTML attributes
    • Using bootstrap related tags inside JSF2 h:inputText component
    • How to render a custom attribute of <h:outputLink>?
    • InputText PrimeFaces not applying maxlength
    • Adding Custom Attributes to Primefaces Autocomplete Component in JSF

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