Created
March 23, 2015 08:53
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Lib.ajax.getJSON({ | |
url: 'https://api.twitter.com/1/statuses/user_timeline.json?&screen_name=gabromanato&callback=?&count=1', | |
type: 'jsonp' | |
}, function(tweet) { | |
document.querySelector('#tweet').innerHTML = tweet[0].text; | |
}); |
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(function() { | |
var Lib = { | |
ajax: { | |
xhr: function() { | |
var instance = new XMLHttpRequest(); | |
return instance; | |
}, | |
// code continues | |
} | |
}; | |
window.Lib = Lib; | |
})() | |
getJSON: function(options, callback) { | |
var xhttp = this.xhr(); | |
options.url = options.url || location.href; | |
options.data = options.data || null; | |
callback = callback || | |
function() {}; | |
options.type = options.type || 'json'; | |
var url = options.url; | |
if (options.type == 'jsonp') { // JSONP | |
window.jsonCallback = callback; // Now our callback method is globally visible | |
var $url = url.replace('callback=?', 'callback=jsonCallback'); | |
var script = document.createElement('script'); | |
script.src = $url; | |
document.body.appendChild(script); | |
} | |
xhttp.open('GET', options.url, true); | |
xhttp.send(options.data); | |
xhttp.onreadystatechange = function() { | |
if (xhttp.status == 200 && xhttp.readyState == 4) { | |
callback(xhttp.responseText); | |
} | |
}; | |
} |
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Javascript equivalent of jquery's jsonp