Bootstrap Attributes

The UI5 bootstrap script tag in index.html accepts a long list of data-sap-ui-* attributes — they control asynchronous loading, the compatibility version, clickjacking protection, locale, preloaded libraries and many more. abap2UI5 already sets sensible defaults:

<script id="sap-ui-bootstrap"
        src="…/sap-ui-core.js"
        data-sap-ui-theme="sap_horizon"
        data-sap-ui-resourceroots='{ "z2ui5": "./" }'
        data-sap-ui-oninit="onInitComponent"
        data-sap-ui-compatVersion="edge"
        data-sap-ui-async="true"
        data-sap-ui-frameOptions="trusted"
        data-sap-ui-bindingSyntax="complex">
</script>

Add or Override Attributes

To add an attribute — or override one of the defaults — append a row to cs_config-t_add_config. Each row contributes one name='value' pair to the script tag:

METHOD z2ui5_if_exit~set_config_http_get.

    cs_config-t_add_config = VALUE #(
      ( n = `data-sap-ui-libs`         v = `sap.m,sap.ui.table` )
      ( n = `data-sap-ui-language`     v = `en` )
      ( n = `data-sap-ui-frameOptions` v = `allow` )
      ( n = `data-sap-ui-preload`      v = `async` ) ).

ENDMETHOD.

Useful Attributes

Attribute	Purpose
data-sap-ui-libs	Comma-separated list of UI5 libraries to preload (e.g. sap.m,sap.ui.table). Trade load time against startup speed.
data-sap-ui-language	UI5 locale; overrides the browser language. See Language.
data-sap-ui-compatVersion	Compatibility version, controls UI5 behaviour for deprecated APIs. abap2UI5 defaults to edge.
data-sap-ui-async	Asynchronous module loading. Default true — only change for legacy reasons.
data-sap-ui-preload	Module preloading strategy: async, sync or empty (off).
data-sap-ui-frameOptions	Clickjacking protection: trusted, allow, deny. Default trusted.
data-sap-ui-allowlistService	Endpoint for the URL allowlist service.
data-sap-ui-bindingSyntax	Binding syntax: complex (default) or simple. abap2UI5 expressions require complex.
data-sap-ui-resourceroots	Additional resource roots for custom libraries.
data-sap-ui-xx-componentpreload	Component-preload strategy for very large apps.

Attributes set by abap2UI5 by default can be overridden — a row with the same name wins over the framework default.

See Also

• Official UI5 configuration options and URL parameters reference — the authoritative list of every supported attribute.
• Bootstrapping — how to change the bootstrap script source.