Defer Client Object Initialization
The allowClientObjectDeferredInitialization option enables the browser to load and execute included and startup scripts asynchronously when loading a page.
<configuration> ... <devExpress> <bootstrap allowClientObjectDeferredInitialization="true" /> </devExpress> ... </configuration>
To use the DevExpress Web.config section, register this section group beforehand.
A browser should execute external scripts when it encounters them while rendering a page. This can block page rendering and increase the page's loading time. The allowClientObjectDeferredInitialization option reorganizes scripts so that they are loaded asynchronously. This allows the browser to render the page without delay.
This option is enabled by default.
The browser initializes DevExpress ASP.NET components when the page is loaded. Refer to the How to ensure that controls are initialized on the client side KB article for more information.