giphy gifs lister

giphy_gifs_lister.js

var saveData = (function() {
    var a = document.createElement("a");
    document.body.appendChild(a);
    a.style = "display: none";
    return function(data, fileName) {
        blob = new Blob([data], {
            type: "text/plain;charset=utf-8"
        }),
        url = window.URL.createObjectURL(blob);
        a.href = url;
        a.download = fileName;
        a.click();
        window.URL.revokeObjectURL(url);
    };
}());

function reqListener() {
    var myArr = JSON.parse(this.responseText);
    var liste = "";
    for (var i = 0; i < myArr.data.gifs.length; i++) {
        var gif = myArr.data.gifs[i];
        liste += gif.images.original.url + "\r\n";
    }
    saveData(liste, this.mydata.category+"_"+this.mydata.page+".txt");
}
function downloadGif(category, page) {
    var oReq = new XMLHttpRequest();
    oReq.mydata = {category: category, page: page};
    oReq.addEventListener("load", reqListener);
    oReq.open("GET", "http://giphy.com/search/"+category+"/2?is="+page+"&json=true");
    oReq.setRequestHeader("Authorization", "ApiKey giphy-website:e0771ed7b244ec9c942bea646ad08e6bf514f51a");
    oReq.setRequestHeader("X-NewRelic-ID", "VwQBUlZWGwEAVlJSAwI=");
    oReq.setRequestHeader("X-Requested-With", "XMLHttpRequest");
    oReq.send();
}

/*
Example Usage:

downloadGif({category-search}, {page});

downloadGif('adventure-time', 1);
downloadGif('adventure-time', 2);
downloadGif('8bit', 1);

*/