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communicate with jsonp
function e(
a, // the url, such as "http://test.com/foo?q=bar&callback="
b, // the callback function
c, // placeholder
d // placeholder
){
with (document) body // on the document body,
.appendChild( // attach
createElement( // a created script.
d = "script" // set d to "script", used later as prefix
)
)
.src = a + ( // set src to url +
c = d + ( // the name on the window, which is "script" +
e.a = // the current increment, which is
-~e.a // itself + 1, coercing to 1 if not yet defined,
)
);
(a=window)[c] = function(d) { // put the callback on the window object, and
a[c] = b(d) // call/clear it when it's done.
}
}
function e(a,b,c,d){with(document)body.appendChild(createElement(d="script")).src=a+(c=d+(e.a=-~e.a));(a=window)[c]=function(d){a[c]=b(d)}}
DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
Version 2, December 2004
Copyright (C) 2011 Jed Schmidt <http://jed.is>
Everyone is permitted to copy and distribute verbatim or modified
copies of this license document, and changing it is allowed as long
as the name is changed.
DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. You just DO WHAT THE FUCK YOU WANT TO.
{
"name": "jsonp",
"keywords": ["jsonp", "AJAX", "communication", "get"]
}
@michaelficarra

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commented May 22, 2011

Naming the function here breaks the rules of not polluting global scope. Only function expressions are allowed. Wrapping it in parentheses will make it a function expression.

@jed

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Owner Author

commented May 22, 2011

It only pollutes if it's included as is, and not as part of a statement. This will be more clear when I make the API official.

@jed

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commented May 23, 2011

Hat tip to @arlolra, whose idea to coerce using ~ ended up saving three bytes, allowing use of the safer window instead of this.

@jimmywarting

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commented Apr 18, 2016

use => arrow fn instead :)

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