random utilities

util.js

/** creates overlay and iframe module via bookmarklet */

(function() {

	var args = Array.prototype.slice.call(arguments);
	var iframeId = args.filter(function(a){return a.el === "IFRAME"})[0].id;
	var overlayId = args.filter(function(a){return a.el === "div"})[0].id;

	args.forEach(function(obj) {
		var el = document.createElement(obj.el);
		el.id = obj.id;
		if (obj.src) el.src = obj.src;
		for (var p in obj.style) el.style[p] = obj.style[p];
		(document.body||document.documentElement).appendChild(el); 
	});

	window.addEventListener("click", function(e) {
		if (e.target.id !== iframeId) {
			var frameEl = document.getElementById(iframeId);
			var overlayEl = document.getElementById(overlayId);
			if (!frameEl || !overlayEl) return;
			frameEl.parentNode.removeChild(frameEl); 
			overlayEl.parentNode.removeChild(overlayEl);
		}
	});

})({
	el: "div",
	id: "overlay",
	style: {
		backgroundColor: "#A4A4A4",
		opacity: ".6",
		position: "fixed",
		left: "0",
		top: "0",
		height: "100%",
		width: "100%"
	}
}, {
	el: "IFRAME",
	src: "http://localhost/...",
	id: "dbiWrap",
	style: {
		width: "30%",
		height: "50%",
		zIndex: "9999999",
		position: "fixed",
		top: "25%",
		left: "35%",
		border: "none"
	}
});

/** inject script into dom via chrome extension */

	function contentScriptInjection (arr, type) {
		arr.map(function(obj) {
			obj.names.map(function(script) {
				var elType         = type === "script"? "script" : "link",
					sourceProp     = type === "script" ? "src" : type === "style" ? "href" : false,
					ext            = type === "script" ? ".js" : type === "style" ? ".css" : false,
					sourceType     = type === "script" ? "text/javascript" : type === "style" ? "text/style" : false,
					typeProp       = type === "script" ? "type" : type === "style" ? "rel" : false,
					el             = document.createElement(elType);
				el[sourceProp] = chrome.extension.getURL(obj.path+script+ext);
				el[typeProp] = sourceType;
				(document.body||document.documentElement).appendChild(el); 
			});
		});
	}

/** upload local scripts to document head */

function load(scripts) { //takes array of scripts without .js extension, they must be in local file
	for (var i = 0; i < scripts.length; i++) {
		var script = document.createElement("script");
		script.src = scripts[i]+'.js';
		document.head.appendChild(script);
		script.onload = i == scripts.length - 1 ? execute : false;
	}
};

/** append to DOM */

function append(obj) {
	var child = document.createElement(obj.el);
	var parent = obj.p == document.body ? document.body : document.getElementById(obj.p);
	for (var p in obj) {
		child[p] = obj[p];
	}
	parent.appendChild(child);
};

/** JSON.stringify style for more "elaborate" window alerts */

var jsonStyle = JSON.stringify(data, null, 3).replace(/[\]\[\{\}\,\\"]*/g, "");

/** leading zeros
* @input {string or integer}
* @zeros (integer)
* @mode (optional) {boolean}: true = appends zeros equal to 2nd parameter
*/

function leadingZeros(input, zeros, mode) {
	var string = input.toString();
	var difference = zeros - string.length > 0 ? zeros - string.length : 0;
	var set = typeof input === "number" ? string.split('') : input.split('');
	mode = mode === true ? zeros : difference;
	for (var i = 0; i < mode; i++) set.splice(0, 0, "0");
	return set.join('')
}