Short unparam string or object attr

jquery.unparam.js

/*
* Unparam url link parameters string 'key1=value1&key2=value2' to object {key1: 'value1', key2: 'value2'}
* https://gist.github.com/MrSwed/9164b1ffad0dfe33efdb3ca11b7377eb
* Usage: 
*  $("a").unparam()                                  // return params from href {param1:"value1","param2":"value2"}
*  $("div").unparam({"attr":"data-url"})             // return params from url at attr 'data-url' {param1:"value1","param2":"value2"}
*  $("div").unparam("key1=value1&key2=value2"})      // return params from url at attr 'data-url' {param1:"value1","param2":"value2"}
*  $.fn.unparam({"data":"key1=value1&key2=value2"})  //  return  {key1: 'value1', key2: 'value2'}
*/
$.extend({
	"unparam": function(args){
		var t = this, data;
		args = $.extend({'attr': 'href'}, typeof args === "string" ? {data: args} : args);
		data = args["data"] ?? $(t).filter("[" + args["attr"] + "]").attr(args["attr"]);
		if (/\?/.test(data)) data = data.split("?", 2)[1];
		return data?.split("&")?.reduce((s, i) => {
			i = i.split("=");
			s[i[0]] = i[1] ?? null;
			return s;
		}, {})
	}
});