SOURCE

 
function urlParamToObj(url) {
    let obj = {},
        index = url.indexOf('?'),  
        params = url.substr(index + 1); 

    if (index != -1) {  
        let parr = params.split('&');  
        for (let i of parr) {          
            let arr = i.split('=');   
            obj[arr[0]] = arr[1];   
        }
    }

    return obj;
}
var objxx=urlParamToObj('http://xc-loan.sit01.nflow.internal/loan-web/api/a6');
console.log(objxx.phonexx||'4444')