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For example, maybe you have a bot that publishes certain data to a Wiki page regularly, and you want your script to read that data. Careful with ctype. Set it to raw for normal Wiki pages, and application/json for pages where a template editor or admin has set the Content Model to JSON.
There's no edit toolbar, because there's no need for buttons for inserting a signature, or a table, or other text. There's also a message about using the "Show preview" button to test the added JavaScript before saving the page. 4. Add an edit summary (Adding JavaScript for user tabs, for example) and then click the "Show preview" button.
This example bookmarklet performs a Wikipedia search on any highlighted text in the web browser window. In normal use, the following JavaScript code would be installed to a bookmark in a browser [13] bookmarks toolbar. From then on, after selecting any text, clicking the bookmarklet performs the search.
For example, on English Wikipedia, the header is used to create a table of contents. The bottom of the information can be customised via MediaWiki:Pageinfo-footer. It is blank by default but can be set at each wiki. For example, on English Wikipedia, it is used to create an additional section "External tools".
Hopefully you should now be looking at the source of some incarnation of your user javascript file (which may be blank if you're just blanked it). If the copy you're looking at is the current copy, without the popups installation, then all should be well: if you shift-reload a page in Wikipedia then the popups should be gone.
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The syntax of JavaScript is the set of rules that define a correctly structured JavaScript program. The examples below make use of the log function of the console object present in most browsers for standard text output. The JavaScript standard library lacks an official standard text output function (with the exception of document.write).
The letter "J" in the term AJAX originally indicated the use of JavaScript, as well as XML. With the rise of server side JavaScript processing, for example, Node.js, originally developed in 2009, JavaScript is also used to dynamically create pages on the server that are sent fully formed to clients.