Wikipedia:WikiProject User scripts/Guide/Ajax: Difference between revisions

Revision as of 01:31, 30 September 2008

Revision as of 01:36, 30 September 2008

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[[Ajax (programming)|AJAX]] (''asynchronous JavaScript and XML'') is a popular name for a web programming technique that queries the server or fetches content without reloading the entire page.

While programming AJAX can be complex, libraries of functions can make it much easier. MediaWiki's [{{SERVER}}/skins-1.5/common/ajax.js ajax.js] provides a small set of functions by default, and [[m:User:Pathoschild/Scripts/Ajax framework|Pathoschild's AJAX framework]] provides a more comprehensive library of functions. This page will document bothprogramming librarieswith and without the latter.

==Common problems==

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===Fetch page content===

Fetching a page content can easily be done using [[GET]].

<source lang="javascript">

/************

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if(_api.readyState==4) {

if(_api.status==200)

alert('The remote page contains:\n' + api_api.responseText);

else

alert('The query returned an error.');

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function show_result(_api) {

if(_api.success)

alert('The remote page contains:\n' + api_api.responseText);

else

alert('An error occurred.');

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===Edit a page and other common actions===

Scripts can easily perform common actions (like editing, protection, blocking, deletion, etc) through the [{{SERVER}}/w/api.php API]. These actions require an edit token, which is valid for any action during the same session. (However, you should get a new token for different tasks in case this changes in the future.)

The code below shows how to edit a page, but it can easily be adapted to other actions by reading the [{{SERVER}}/w/api.php API documentation].