Cross-domain loading of an embedded Visualforce calendar

Cross domain loading can in certain situations be an issue that causes embedded visualforce calendars to not load. The main indicator that there is a cross domain loading error is “XMLHttpRequest cannot load” errors in the browser developer console when a page with an embedded calendar is loaded.

To resolve this issue the userAdditionalSettings debug parameter can be added to the embedded page code as follows:

<SLCA2:calendar namespace="SLCA2"
calendar="a0861000000LJzDAAW"
createable="a0861000000LJzDAAW"
enabled="{'a0861000000LJzDAAW':true}"
view="week"
settings="['l_ds','r_y', 'r_l']"
urlparams="sb=2"
userAdditionalSettings="{'debug':'true'}"
>
</SLCA2:calendar>

This enables a different javascript loading method and should resolve the cross-domain loading issues.