Require. JS APIRequire. JS takes a different approach to script loading than traditional lt script tags. While it can also run fast and optimize well, the primary goal is to encourage modular code. Open File Dailog box example using Webutil CLIENTGETFILENAME Forms 10g. Usage 1 Load JavaScript Files 1. RequireJS takes a different approach to script loading than traditional ltscript tags. While it can also run fast and. Provides a nonfree multilingual spellchecker written with JavaScript an Ajax functionnalities. Crossplatform text editor for code and any kind of text file. Supports syntax highlighting, completion, projects and plugins. As part of that, it encourages using module IDs instead of URLs for script tags. Require. JS loads all code relative to a base. Url. The base. Url is normally set to the same directory as the script used in a data main attribute for the top level script to load for a page. The data main attribute is a special attribute that require. This example will end up with a base. Url of scripts lt This sets the base. Url to the scripts directory, and. ID of main. Or, base. Url can be set manually via the Require. JS config. If there is no explicit config and data main is not used, then the default base. Url is the directory that contains the HTML page running Require. JS. Require. JS also assumes by default that all dependencies are scripts, so it does not expect to see a trailing. IDs. Require. JS will automatically add it when translating the module ID to a path. With the paths config, you can set. All of these capabilities allow you to use smaller strings for scripts as compared to traditional lt script tags. There may be times when you do want to reference a script directly and not conform to the base. Url paths rules for finding it. If a module ID has one of the following characteristics, the ID will not be passed through the base. JS2.png' alt='Download File From Url Using Javascript Functions' title='Download File From Url Using Javascript Functions' />Url paths configuration, and just be treated like a regular URL that is relative to the document Ends in. Starts with a. Contains an URL protocol, like http or https. Download File From Url Using Javascript Functions' title='Download File From Url Using Javascript Functions' />In general though, it is best to use the base. Url and paths config to set paths for module IDs. By doing so, it gives you more flexibility in renaming and configuring the paths to different locations for optimization builds. Similarly, to avoid a bunch of configuration, it is best to avoid deep folder hierarchies for scripts, and instead either keep all the scripts in base. Url, or if you want to separate your libraryvendor supplied code from your app code, use a directory layout like this www. By default load any module IDs from jslib. This tutorial will make you learn on the way how we can swap images on a web page making use of a JavaScript. Url jslib. except, if the module ID starts with app. Url, and. never includes a. Start the main app logic. Query, canvas and the appsub module are all. Notice as part of that example, vendor libraries like j. Query did not have their version numbers in their file names. It is recommended to store that version info in a separate text file if you want to track it, or if you use a tool like volo, it will stamp the package. This allows you to have the very minimal configuration instead of having to put an entry in the paths config for each library. For instance, configure jquery to be jquery 1. Ideally the scripts you load will be modules that are defined by calling define. However, you may need to use some traditionallegacy browser globals scripts that do not express their dependencies via define. For those, you can use the shim config. To properly express their dependencies. If you do not express the dependencies, you will likely get loading errors since Require. JS loads scripts asynchronously and out of order for speed. The data main attribute is a special attribute that require. You will typically use a data main script to set configuration options and then load the first application module. Note the script tag require. This means that you cannot assume that the load and execution of your data main script will finish prior to other scripts referenced later in the same page. For example, this arrangement will fail randomly when the require. This code might be called before the require. When that happens, require. If you want to do require calls in the HTML page, then it is best to not use data main. For pages that want to do inline require calls, it is best to nest those inside a require call for the configuration lt script srcscriptsrequire. Configuration loaded now, safe to do other require calls. A module is different from a traditional script file in that it defines a well scoped object that avoids polluting the global namespace. It can explicitly list its dependencies and get a handle on those dependencies without needing to refer to global objects, but instead receive the dependencies as arguments to the function that defines the module. Modules in Require. JS are an extension of the Module Pattern, with the benefit of not needing globals to refer to other modules. The Require. JS syntax for modules allows them to be loaded as fast as possible, even out of order, but evaluated in the correct dependency order, and since global variables are not created, it makes it possible to load multiple versions of a module in a page. If you are familiar with or are using Common. Adobe Resource Synchronizer Login Items On Mac there. JS modules, then please also see Common. JS Notes for information on how the Require. JS module format maps to Common. JS modules. There should only be one module definition per file on disk. The modules can be grouped into optimized bundles by the optimization tool. If the module does not have any dependencies, and it is just a collection of namevalue pairs, then just pass an object literal to define Inside file myshirt. If the module does not have dependencies, but needs to use a function to do some setup work, then define itself, pass a function to define myshirt. Do setup work here. If the module has dependencies, the first argument should be an array of dependency names, and the second argument should be a definition function. The function will be called to define the module once all dependencies have loaded. The function should return an object that defines the module. The dependencies will be passed to the definition function as function arguments, listed in the same order as the order in the dependency array myshirt. To. Cart function. In this example, a myshirt module is created. It depends on mycart and myinventory. On disk, the files are structured like this mycart. The function call above specifies two arguments, cart and inventory. These are the modules represented by the. The function is not called until the mycart and myinventory modules have been loaded, and the function receives the modules as the cart and inventory arguments. Modules that define globals are explicitly discouraged, so that multiple versions of a module can exist in a page at a time see Advanced Usage. Also, the order of the function arguments should match the order of the dependencies. The return object from the function call defines the myshirt module. By defining modules in this way, myshirt does not exist as a global object. Modules do not have to return objects. Any valid return value from a function is allowed. Here is a module that returns a function as its module definition A module definition inside footitle. It uses. mycart and myinventory modules from before. The my part of the name can be mapped. It gets or sets the window title. Name cart. If you wish to reuse some code that was written in the traditional Common. JS module format it may be difficult to re work to the array of dependencies used above, and you may prefer to have. You can use the simplified Common. JS wrapper for those cases definefunctionrequire, exports, module. Return the module value. This wrapper relies on Function. String to give a useful string value of the function contents. This does not work on some devices like the PS3 and some older Opera mobile browsers. Use the optimizer to pull out the dependencies in the array format for use on those devices. More information is available on the Common. JS page, and in the Sugar section in the Why AMD page. You may encounter some define calls that include a name for the module as the first argument to define Explicitly defines the footitle module. Define footitle object in here. 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