parse json string from wikimedia using jquery

Question

Im tring to get the infobox from wiki pages. For this I\'m using wiki api. The following is the url from which I\'m getting json data.

http://en.wikipedia.org/w/api.

Answer 1

If you want the actual html as it is displayed in the wikipage, use action=parse instead. And yes, the result objects are deeply nested. But no reason to loop over them!

• the first property is always the action, here: query
• you have requested properties of pages, so you will receive pages
• which are keyed by their page id. This is the only step to use a loop
• Each page object has certain properties (like a title), you're interested in the revisions
• this is an array of revision objects, you need the only and first
• the sourcetext property of a revision object is the *

So, just do it:

if (data && data.query && data.query.pages)
    var pages = data.query.pages;
else
    // error: No pages returned / other problems!
for (var id in pages) { // in your case a loop over one property
    if (pages[id].revisions && pages[id].revisions[0] && pages[id].revisions[0]["*"])
        var content = pages[id].revisions[0]["*"];
    else
        // error: No revision content returned for whatever reasons!
}
// use "content" variable here

Dont forget to check for the existance of each object! If you requested no pages, there will be no pages object; this is only the case when the pages "array" is empty. A page may be missing/invalid title or something else, so that is has no revisions. etc.