It search Spotify Users having Playlists with given search terms.

spotify+users+playlist-search.js

// Simple XMLHttpRequest
// based on https://davidwalsh.name/xmlhttprequest
var SimpleRequest = {
        call: function(what, response) {
            var request;
            if (window.XMLHttpRequest) { // Mozilla, Safari, ...
                request = new XMLHttpRequest();
            } else if (window.ActiveXObject) { // IE
                try {
                    request = new ActiveXObject('Msxml2.XMLHTTP');
                } catch (e) {
                    try {
                        request = new ActiveXObject('Microsoft.XMLHTTP');
                    } catch (e) {}
                }
            }
            // state changes
            request.onreadystatechange = function() {
                if (request.readyState === 4) { // done
                    if (request.status === 200) { // complete	
                        response(request.responseText)
                    } else response();
                }
            }
            request.open('GET', what, true);
            request.send(null);
        }
    }
    //PromiseAll
var promiseAll = function(items, block, done, fail) {
    var self = this;
    var promises = [],
        index = 0;
    items.forEach(function(item) {
        promises.push(function(item, i) {
            return new Promise(function(resolve, reject) {
                if (block) {
                    block.apply(this, [item, index, resolve, reject]);
                }
            });
        }(item, ++index))
    });
    Promise.all(promises).then(function AcceptHandler(results) {
        if (done) done(results);
    }, function ErrorHandler(error) {
        if (fail) fail(error);
    });
}; //promiseAll

Spotify = function() {

    this.fetchUserProfiles = function(searchTerms) {

        // LP: deferred execution block
        var ExecutionBlock = function(item, index, resolve, reject) {
            var url = "https://api.spotify.com/v1/"
            url += item;
            SimpleRequest.call(url, function(result) {
                if (result) {

                    var profileUrls = JSON.parse(result).playlists.items.map(function(item, index) {
                        return item.owner.href;
                    })
                    resolve(profileUrls);
                } else {
                    reject(new Error("call error"));
                }
            })
        }

        var arr = searchTerms.map(function(item, index) {
            return "search?type=playlist&q=" + item;
        });

        promiseAll(arr, function(item, index, resolve, reject) {
                console.log("Making request [" + index + "]")
                ExecutionBlock(item, index, resolve, reject);
            }, function(results) { // aggregated results

                console.log("All profiles received " + results.length);
                //console.log(JSON.stringify(results[0], null, 2));

                ///// promiseall again

                var ExecutionProfileBlock = function(item, index, resolve, reject) {
                        SimpleRequest.call(item, function(result) {
                            if (result) {
                                var obj = JSON.parse(result);
                                resolve({
                                    id: obj.id,
                                    name: obj.display_name,
                                    followers: obj.followers.total,
                                    url: obj.href
                                });
                            } //result
                        })
                    } //ExecutionProfileBlock

                promiseAll(results, function(item, index, resolve, reject) {


                        promiseAll(item, function(item, index, resolve, reject) {
                                ExecutionProfileBlock(item, index, resolve, reject);
                            }, function(results) { // aggregated results
                                resolve(results)
                            }

                            ,
                            function(error) { // error
                                console.log(error);
                            })


                    }, function(results) { // aggregated results
                        console.log("All response received " + results.length);
                        console.log(JSON.stringify(results, null, 2));
                    }

                    ,
                    function(error) { // error
                        console.log(error);
                    })




                /////


            },
            function(error) { // error
                console.log(error);
            });
    }
}

How to use:

var spotify=new Spotify()
var spotify.fetchUserProfiles(["hello adele", "metallica"]);

Example output

[
    [
        {
            "id": "cocolilokids",
            "name": null,
            "followers": 7,
            "url": "https://api.spotify.com/v1/users/cocolilokids"
        },
        {
            "id": "madisonsalas1-us",
            "name": "Madison Salas",
            "followers": 2,
            "url": "https://api.spotify.com/v1/users/madisonsalas1-us"
        },
        {
            "id": "1298156234",
            "name": "David Hernandez Chambi",
            "followers": 11,
            "url": "https://api.spotify.com/v1/users/1298156234"
        },
        {
            "id": "liamxbox616",
            "name": null,
            "followers": 2,
            "url": "https://api.spotify.com/v1/users/liamxbox616"
        },
        {
            "id": "12156110381",
            "name": "VenusYvon Sibal",
            "followers": null,
            "url": "https://api.spotify.com/v1/users/12156110381"
        },
        {
            "id": "ranirileyrn09",
            "name": null,
            "followers": 0,
            "url": "https://api.spotify.com/v1/users/ranirileyrn09"
        },
        {
            "id": "cdental",
            "name": null,
            "followers": null,
            "url": "https://api.spotify.com/v1/users/cdental"
        },
        {
            "id": "lolycumbres",
            "name": null,
            "followers": 0,
            "url": "https://api.spotify.com/v1/users/lolycumbres"
        },
        {
            "id": "224ma3dgtavwn7qwu3bem3eui",
            "name": "Edwin Armijo",
            "followers": 0,
            "url": "https://api.spotify.com/v1/users/224ma3dgtavwn7qwu3bem3eui"
        },
        {
            "id": "22v2vasyo4uynmtjgsgzj3dya",
            "name": "Kimberly Marie Silcox",
            "followers": 0,
            "url": "https://api.spotify.com/v1/users/22v2vasyo4uynmtjgsgzj3dya"
        },
        {
            "id": "1258109873",
            "name": "Theresa Rules",
            "followers": 2,
            "url": "https://api.spotify.com/v1/users/1258109873"
        },
        {
            "id": "bitayncl",
            "name": null,
            "followers": 0,
            "url": "https://api.spotify.com/v1/users/bitayncl"
        },
        {
            "id": "sunuaf",
            "name": null,
            "followers": 0,
            "url": "https://api.spotify.com/v1/users/sunuaf"
        },
        {
            "id": "21afbnfzuyc2r5jivulreu4ei",
            "name": "Michelle Kennedy",
            "followers": 0,
            "url": "https://api.spotify.com/v1/users/21afbnfzuyc2r5jivulreu4ei"
        },
        {
            "id": "doroothy",
            "name": null,
            "followers": 0,
            "url": "https://api.spotify.com/v1/users/doroothy"
        },
        {
            "id": "22zovtqmx7qaotgiiovyspfca",
            "name": "Shelbie Bradford",
            "followers": 0,
            "url": "https://api.spotify.com/v1/users/22zovtqmx7qaotgiiovyspfca"
        },
        {
            "id": "svedz",
            "name": null,
            "followers": 0,
            "url": "https://api.spotify.com/v1/users/svedz"
        },
        {
            "id": "jesandjor",
            "name": null,
            "followers": 0,
            "url": "https://api.spotify.com/v1/users/jesandjor"
        },
        {
            "id": "1268131308",
            "name": "Andrew Germundson",
            "followers": 2,
            "url": "https://api.spotify.com/v1/users/1268131308"
        },
        {
            "id": "1158973854",
            "name": "Georgia Smith-Ball",
            "followers": 4,
            "url": "https://api.spotify.com/v1/users/1158973854"
        }
    ],
    [
        {
            "id": "metallicamika",
            "name": "Mika Sjölund",
            "followers": 1318,
            "url": "https://api.spotify.com/v1/users/metallicamika"
        },
        {
            "id": "javiflames",
            "name": "Javi Salinas",
            "followers": 2149,
            "url": "https://api.spotify.com/v1/users/javiflames"
        },
        {
            "id": "dergamefan234",
            "name": null,
            "followers": 7,
            "url": "https://api.spotify.com/v1/users/dergamefan234"
        },
        {
            "id": "hif.pettersson",
            "name": null,
            "followers": 3,
            "url": "https://api.spotify.com/v1/users/hif.pettersson"
        },
        {
            "id": "1162700363",
            "name": "Marco Kurz",
            "followers": 60,
            "url": "https://api.spotify.com/v1/users/1162700363"
        },
        {
            "id": "torarneiversen",
            "name": "Tor-Arne Iversen",
            "followers": 44,
            "url": "https://api.spotify.com/v1/users/torarneiversen"
        },
        {
            "id": "12148450919",
            "name": "Travis Lowe-Farnsworth",
            "followers": 8,
            "url": "https://api.spotify.com/v1/users/12148450919"
        },
        {
            "id": "toymz",
            "name": null,
            "followers": 8,
            "url": "https://api.spotify.com/v1/users/toymz"
        },
        {
            "id": "dimmuborgir666",
            "name": "Daniel Johansson",
            "followers": 390,
            "url": "https://api.spotify.com/v1/users/dimmuborgir666"
        },
        {
            "id": "1139317407",
            "name": "Thomas Parviainen",
            "followers": 15,
            "url": "https://api.spotify.com/v1/users/1139317407"
        },
        {
            "id": "serveta-serv",
            "name": null,
            "followers": 10,
            "url": "https://api.spotify.com/v1/users/serveta-serv"
        },
        {
            "id": "12165427480",
            "name": "Brenda K Banks",
            "followers": null,
            "url": "https://api.spotify.com/v1/users/12165427480"
        },
        {
            "id": "pr0x",
            "name": null,
            "followers": null,
            "url": "https://api.spotify.com/v1/users/pr0x"
        },
        {
            "id": "hitmancodename85",
            "name": "Farshid Javid",
            "followers": 39,
            "url": "https://api.spotify.com/v1/users/hitmancodename85"
        },
        {
            "id": "11133828602",
            "name": "Jan Martyniak",
            "followers": null,
            "url": "https://api.spotify.com/v1/users/11133828602"
        },
        {
            "id": "1211998498",
            "name": "Ashley DiVenere",
            "followers": 28,
            "url": "https://api.spotify.com/v1/users/1211998498"
        },
        {
            "id": "mrventura",
            "name": "Espen Stensaas",
            "followers": 18,
            "url": "https://api.spotify.com/v1/users/mrventura"
        },
        {
            "id": "12129717824",
            "name": "Drew Niceley",
            "followers": 3,
            "url": "https://api.spotify.com/v1/users/12129717824"
        },
        {
            "id": "pmgfcaeiro",
            "name": null,
            "followers": 4,
            "url": "https://api.spotify.com/v1/users/pmgfcaeiro"
        },
        {
            "id": "115444417",
            "name": "Pedro Javier Muela García",
            "followers": null,
            "url": "https://api.spotify.com/v1/users/115444417"
        }
    ]
]