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InputUsername is a plugin that shows your username on the page where designated. It only works for logged-in users.

If a user wishes to disable the replacement on a particular wiki (for instance if it is being added in a confusing way), he or she may add
window.disableUsernameReplace = true;
to their personal common.js file and the script will be ignored without affecting other users.

window.UsernameReplaceSelector = '.custom';
can be used to add a selector to the script.


Add this on your wiki:

    type: "script",
    articles: [

Add this to MediaWiki:ImportJS:

importArticles — Best Practices for installing JavaScript on FANDOM
The importArticles statement is designed to combine multiple HTTP requests into a single data transfer, allowing multiple scripts to load and execute faster. If you've been installing several different scripts, your JavaScript file has probably accumulated unnecessary import statements. Click "Expand" to learn how to efficiently batch import scripts to speed up performance and make your code look cleaner. One other approach is by using the MediaWiki:ImportJS.
If your JavaScript file has several lines of code that say importScript, importScriptPage, or importArticles, you may be able to combine them! By batch importing a collection of scripts with a single import, your JavaScript code will load faster and look cleaner. Consider the example below. On the left is an example of what your JavaScript file might currently look like. On the right is how you could improve that code.
Multiple imports — messy and slow One import — clean and efficient
  type: 'script',
  article: 'u:dev:FloatingToc/code.js'
importScriptPage('page1.js', 'wikiname');
importScriptPage('page2.js', 'wikiname');
    type: 'script',
    articles: [
Note: In this example, pay close attention to the placement of commas and other punctuation. For people who aren't familiar with programming (and even those who are!), a common mistake when writing code is to accidentally delete, forget, or misplace critical symbols like commas or quotation marks. This can cause a syntax error that breaks the code. Carefully follow the convention shown here when using importArticles.
But there's much more to importArticles than just this! For more examples and advanced usage, see the help page at Help:Including additional JavaScript and CSS.


<span class="InputUsername">&#8203;</span>

Typically, this will be added as a template such as Template:USERNAME, which mimics existing magic words when added to a page, e.g. {{USERNAME}}. An example can be found on the Templates wiki.