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Simple, cross-browser Javascript POST/GET xhr request object. Supports request data and proper AJAX headers.
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/** | |
* @function ajax | |
* @desc IE 5.5+, Firefox, Opera, Chrome, Safari XHR object | |
* @param {string} url - The URL of the resource being requested | |
* @param {function} callback - Function to execute on successful response | |
* @param {mixed} data - Data to be sent with POST request | |
*/ | |
function ajax(url, callback, data) { | |
try { | |
var xhr = this.XMLHttpRequest || ActiveXObject, | |
x = xhr('MSXML2.XMLHTTP.3.0'); | |
x.open(data ? 'POST' : 'GET', url, 1); | |
x.setRequestHeader('X-Requested-With', 'XMLHttpRequest'); | |
x.setRequestHeader('Content-type', 'application/json'); | |
x.onreadystatechange = function() { | |
if (x.readystate > 3 && callback) { | |
callback(x.responseText, x); | |
} | |
}; | |
x.send(data); | |
} catch(e) { | |
if (window.console) { | |
console.log(e); | |
} | |
} | |
} | |
// https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest | |
// https://gist.github.com/jed/993585 | |
// https://gist.github.com/Fluidbyte/5082377 | |
// https://github.com/Xeoncross/kb_javascript_framework/blob/master/kB.js#L30 | |
// https://gist.github.com/iwek/5599777 | |
// http://msdn.microsoft.com/en-us/library/ms537505(v=vs.85).aspx#_id | |
// @todo look into lengthComputable for xhr.upload browsers | |
// http://stackoverflow.com/questions/11127654/why-is-progressevent-lengthcomputable-false | |
// http://stackoverflow.com/questions/10956574/why-might-xmlhttprequest-progressevent-lengthcomputable-be-false | |
// https://github.com/ForbesLindesay/ajax/blob/master/index.js |
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/** | |
* IE 5.5+, Firefox, Opera, Chrome, Safari XHR object | |
* | |
* @param string url | |
* @param object callback | |
* @param mixed data | |
* @param null x | |
*/ | |
var ajax(url, callback, data, cache) { | |
// Must encode data | |
if(data && typeof(data) === 'object') { | |
var y = '', e = encodeURIComponent; | |
for (x in data) { | |
y += '&' + e(x) + '=' + e(data[x]); | |
} | |
data = y.slice(1) + (! cache ? '&_t=' + new Date : ''); | |
} | |
try { | |
var x = new(this.XMLHttpRequest || ActiveXObject)('MSXML2.XMLHTTP.3.0'); | |
x.open(data ? 'POST' : 'GET', url, 1); | |
x.setRequestHeader('X-Requested-With', 'XMLHttpRequest'); | |
x.setRequestHeader('Content-type', 'application/x-www-form-urlencoded'); | |
x.onreadystatechange = function () { | |
x.readyState > 3 && callback && callback(x.responseText, x); | |
}; | |
x.send(data) | |
} catch (e) { | |
window.console && console.log(e); | |
} | |
}; | |
ajax.uriEncode = function(o) { | |
var x, y = '', e = encodeURIComponent; | |
for (x in o) y += '&' + e(x) + '=' + e(o[x]); | |
return y.slice(1); | |
}; | |
ajax.collect = (a, f) { | |
var n = []; | |
for (var i = 0; i < a.length; i++) { | |
var v = f(a[i]); | |
if (v != null) n.push(v); | |
} | |
return n; | |
}; | |
ajax.serialize = function (f) { | |
function g(n) { | |
return f.getElementsByTagName(n); | |
}; | |
var nv = function (e) { | |
if (e.name) return encodeURIComponent(e.name) + '=' + encodeURIComponent(e.value); | |
}; | |
var i = collect(g('input'), function (i) { | |
if ((i.type != 'radio' && i.type != 'checkbox') || i.checked) return nv(i); | |
}); | |
var s = collect(g('select'), nv); | |
var t = collect(g('textarea'), nv); | |
return i.concat(s).concat(t).join('&'); | |
}; | |
// https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest | |
// https://gist.github.com/jed/993585 | |
// https://gist.github.com/Fluidbyte/5082377 | |
// https://github.com/Xeoncross/kb_javascript_framework/blob/master/kB.js#L30 | |
// https://gist.github.com/iwek/5599777 | |
// http://msdn.microsoft.com/en-us/library/ms537505(v=vs.85).aspx#_id | |
// @todo look into lengthComputable for xhr.upload browsers | |
// http://stackoverflow.com/questions/11127654/why-is-progressevent-lengthcomputable-false | |
// http://stackoverflow.com/questions/10956574/why-might-xmlhttprequest-progressevent-lengthcomputable-be-false |
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