Created
December 4, 2011 19:00
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Improving Jeremy Keith's CAT news example from http://24ways.org/2011/conditional-loading-for-responsive-designs
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var cat = {}; | |
/** | |
* cat.NewsBox | |
* Retrieves news from Google | |
*/ | |
cat.NewsBox = (function(){ | |
function NewsBox(searchTerm, injectFn) { | |
this.searchTerm = searchTerm; | |
this.injectFn = injectFn; | |
this.dom = document.createElement('div'); | |
} | |
NewsBox.getURL = 'http://ajax.googleapis.com/ajax/services/search/news'; | |
NewsBox.template = '\ | |
<article>\ | |
<a href="{unescapedUrl}">\ | |
<h3>{titleNoFormatting}</h3>\ | |
</a>\ | |
<p>{content}</p>\ | |
</article>\ | |
'; | |
NewsBox.prototype = { | |
get: function() { | |
// Process JSONP request | |
var me = this, | |
callback = '_' + +new Date, | |
script = document.createElement('script'); | |
script.src = NewsBox.getURL | |
+ '?v=1.0&q=' + this.searchTerm | |
+ '&callback=' + callback; | |
window[callback] = function(data) { | |
delete window[callback]; | |
me.populate(data.responseData.results); | |
}; | |
document.getElementsByTagName('script')[0].appendChild(script); | |
}, | |
populate: function(news) { | |
var html = []; | |
// Populate the template (tokens: `{...}`) | |
for (var item, i = 0, l = news.length; i < l; ++i) { | |
item = news[i]; | |
html[i] = NewsBox.template.replace( | |
/\{([^}]+)\}/g, | |
function($0, $1){ | |
return item.hasOwnProperty($1) ? item[$1] : $0; | |
} | |
); | |
} | |
this.dom.innerHTML = html.join(''); | |
this.injectFn(); | |
} | |
}; | |
return NewsBox; | |
}()); |
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new cat.NewsBox('cats', function() { | |
// Inject news list into the document: | |
document.body.appendChild(this.dom); | |
}); |
I just reread that and realized I was totally unclear, sorry. I'm on my phone so creating code to explain isn't really an option - so I retract, hahaha :)
You mean the topic and URL should be implicit (not configurable)? I guess it would depend on the situation. For this example, I think I agree with you. Even so, I love config options :D
Ah, nevermind. Apparently I didn't know the meaning of "nescient". Cool word.
Word.
This looks great and I wish more JavaScript bloggers put at least this much effort into their example code.
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Solid. I would change the exposed NewsBox constructor to be topic and url nescient, but that's a nitpick. This is what we should be teaching in JavaScript related blogs, I endorse :)