Into Wandbox.user.js

// ==UserScript==
// @name		Into Wandbox
// @namespace		https://twitter.com/__pandaman64__
// @include		*
// ==/UserScript==
(function(){
	function into_wandbox(str){
		//Remove NBSPs
		var new_str = str.replace(/\u00A0/gi, ' ');
		
		//console.log(new_str);
		
		//API home
		var wandbox = "http://melpon.org/wandbox/api";

		//Settings(these can be changed by users someday)
		var language = "c++";
		var compiler = "gcc-head";
		var options = ["c++1y"];
		
		//JSON post data
		var post_data = {
			"compiler": compiler,
			"options": options.join(","),
			"code": new_str
		};
		//post_data.created_at = new Date().toISOString();		//for permlink(but I cant get permlink)

		//console.log(JSON.stringify(post_data));

		//Post compile request.
		GM_xmlhttpRequest({
			method: "POST",
			url: wandbox + "/compile.json",
			//url: wandbox + "/permlink/",
			headers: {
				"Content-Type": "application/json"
			},
			data: JSON.stringify(post_data),
			onload: function(res){
				console.log(res.responseText);
			}
		});
	};

	document.addEventListener(
		"keydown",
		function(e){
			if(e.keyCode == 13){	//[Enter]
				if(e.shiftKey && e.ctrlKey){
					//Into Wandbox!
					into_wandbox(window.getSelection().toString());
				}
			}
		}
	);
})();