compose_example.js

var url="www.go.myurlexample.com/007w3?id1=123&id2=abc";

var getLastString=(param)=>(string)=>string.split(param).slice(-1).join();

var split=(param)=>(string)=>string.split(param);

var getParamObj=(arr)=>arr.reduce((acc,str)=>{
var arr=split("=")(str);
acc[arr[0]]=arr[1];
return acc;}
,{})

var getUrlParams=compose(getParamObj,split("&"),getLastString("?"));

getUrlParams(url); //{id1: "123", id2: "abc"}