This section describes the JavaScript APIs available to Oracle APEX applications.You can use these functions to provide client-side functionality, such as showing and hiding page elements,or making Ajax (Asynchronous JavaScript and XML) requests.

Most of the APEX JavaScript APIs are organized into namespaces. A namespace is simply a global singletonobject that contains a number of functions. There is one top level APEX namespace called apex.This has a number of sub namespaces such as apex.server and apex.util. Namespaces help to organize codeand reduce the chance of name conflicts with other JavaScript libraries.

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There are some older global functions that are not in a namespace. Most of these start with a $ character. These areknown as Non-namespace APIs. Global symbols that start with apexor $ are reserved by APEX.

Some functions return an interface that allows access to a specific instance of a page component or other entity.The returned interface is an object that contains functions known as methods and variables known as properties.

APEX also includes a number of UI widgets based on the jQuery UI widget factory. Widgets are high leveluser interface components such as menus, trees, or grids. APEX makes it easy to declaratively addcomponents such as items and regions to a page. Internally some components are implemented using these widgets. Defaultcomponent behavior does not require any JavaScript programming. To implement advanced use cases you can leverage thedocumented widget methods, options and events. The jQuery UI library in APEX is deprecated, but it is still used bysome APEX components so a basic understanding of its widget factory can be helpful in understanding APEX widgets.

Oracle APEX handles the details of rendering a page so compared to authoring your own HTML file, it may not be initiallyclear where you should add your JavaScript code. APEX provides a number of specific places for you to add JavaScript code.You should avoid entering your own tags in places where HTML markup isallowed. Avoid inline event handlers such as onclick in HTML markup.Also avoid entering JavaScript code using the javascript: pseudo-protocol in placeswhere URLs are allowed.

Various components may have specific attributes for JavaScript code snippets. For example some regions and items havean Advanced: Initialization JavaScript Function attribute that is used for advanced configuration of the region or item.This code is applied in a specific context for a specific purpose. See the associated attribute help in Page Designerfor details.

Dynamic Actions provide a way to respond to events. There are a number of declarative actions that can be run inresponse to an event. In addition you can use the Execute JavaScript Code action to execute your own JavaScript.This code is added to the page and run when the specified event occurs. Dynamic Actions added to the Global Pagecan apply to all pages subject to any Server-Side Condition.

It is a best practice to put the bulk of your code into one or more files. These files can be served by a web serverthat you have access to or served by APEX by adding the file to Shared Components: Static Application Files or,to share the file among multiple apps, Static Workspace Files. Shared Components Files will create theminified file each time the JavaScript file is saved.

Using third party tools you can minify your JavaScript files to make them smaller, which makes them load faster. Theminified files should be put in a sub folder named minified/ relative to the originalsource file or the file name should include .min. This allows using substitutiontoken #MIN# to include .min or #MIN_DIRECTORY# to includeminified/ as part of the File URL. You can use #MIN# or #MIN_DIRECTORY# or both.This allows the minified file to be loaded normally but in debug mode the non-minified (original source) file willbe used for easier debugging.

For example if you have a file called appUtils.js added to Static Application Filesthe minified version of that file is called appUtils.min.js and is automaticallyadded to Static Application Files. You would then reference the file as:

If you have a file that you want loaded on all pages you can enter that file in one place rather than oneach page. Shared Components > User Interface > User Interface Attributes has an attribute where you canenter any number of JavaScript File URLs (one per line).

The Universal Theme provides all the templates you need for a wide range of user interface layouts and functionality.In special cases you may create your own templates. Most template types such as region and list templates allowentering JavaScript File URLs and JavaScript code that apply to the template. On any page where those templates areused the corresponding JavaScript is added. Page templates have template attributes for JavaScript corresponding tothe page attributes listed above.

Page templates also define the order in which JavaScript is loaded on the page. (The order in which the code actuallyruns is controlled by other factors such as events including the document ready event.) The order is given bythe following template substitution tokens which should be at the end of the document body.

If you define your own page template it is highly recommended not to change the order. When in doubt about whereyour code is loaded view the page source. Set breakpoints or use console.log orapex.debug functions to determine when your code executes.

The best way to modularize and reuse your code is to create APEX plug-ins. Template Component, Region, Item,and Dynamic Action plug-ins let you control what the server renders for the corresponding component.This includes JavaScript code and JavaScript files.JavaScript files can be uploaded as part of the plug-in. See the APEX PL/SQL APIs in theAPEX_JAVASCRIPT package including ADD_3RD_PARTY_LIBRARY_FILEand ADD_ONLOAD_CODE.

All the APEX APIs described here are in files located relative to #APEX_FILES#libraries/apex/.APEX adds the necessary JavaScript files based on the contents of the page. For example if the pagehas an Interactive Grid region the model.js, andwidget.interactiveGrid.js files as well as others will automatically be includedon the page. The only reason you would need to manually include an APEX JavaScript file is if you are using an API or widgetwithout including the corresponding component on the page - this is very unusual.Unless the page is in debug mode a minified JavaScript file will be loaded and in many cases multiple minified files areconcatenated into a single file. The JavaScript files used most frequently by APEX are concatenated intodesktop.min.js (desktop_all.min.jsincludes jQuery as well) which is included on all pages. This is for informational purposes.The set of files and how they are concatenated is subject to change in each release. You can define your own concatenatedfiles using Shared Components > User Interface > User Interface Attributes: Create Concatenated File.

JavaScript functions that are deprecated and desupported have been moved to legacy JavaScript files,which can be found in /i/libraries/apex/legacy*.js.Deprecation and desupport notices are given in the release notes.Oracle recommends that you rewrite or replace any code that uses these legacy functions.

To give the developer time to migrate their code away from deprecated and desupported functions APEX has the option toinclude the legacy JavaScript files. This is achieved by using the Include Deprecated or Desupported Javascript Functionscheckboxes on the Shared Components > User Interface > User Interface Attributes page. You will also find an optionto include jQuery Migrate, which is a library that logs usage of deprecated jQuery functions to help migrateyour old jQuery code.

Existing applications are migrated with the latest legacy file option checked, for backward compatibility.To not include this legacy file, you need to go through the functions listed in the legacy file, and search yourapplication and associated JavaScript files for any references to those files.Once you are happy that there are no references to these functions, you can switch offincluding the legacy file(s) and benefit from loading fewer files.

I would like to submit the page when I click a button, there are a couple validations I want to do first and I don't want to use the built in one for it so I'm creating one using javascript dynamic action. Most of it works just fine, just the submit page doesn't execute. Using this documentation.

Are your page processes are executed when page is submitted with the request 'submit'?Also you can try the console of your browser and just execute apex.submit() without any request specified to see if the page is submitted or not. 152ee80cbc

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