x.js

var querystring = require("querystring")
var uuid = require("uuid")

function jsonp(uri, options, cb) {
    var script = document.createElement("script")
    var id = uuid()
    script.src = uri + "/?" + querystring.stringify(options) +
        "&cb=__jsonp_"+id

    window["__jsonp_" + id] = cb

    document.body.appendChild(script)
}