Connecting Pico to the internet without Web IDE

Hi,

I want to connect my Pico to the internet with an ESP8266-12f.

When I send and save() the code using the Web IDE it's fine but then if I disconnect it and power it up with a usb power supply, it doesn't work.

function onInit() {
  Serial1.setup(115200, { rx: B7, tx : B6 });
  var wifi = require("ESP8266WiFi_0v25").connect(Serial1, function(err) {
    if (err) throw err;
    wifi.reset(function(err) {
      if (err) throw err;
      wifi.connect("xxx","xxx", function(err) {
        if (err) throw err;
        require("http").get("http://www.pur3.co.uk/hello.txt", function(res) {
          console.log("Response: ",res);
          res.on('data', function(d) {
            console.log("--->"+d);
            if (res.statusMessage == "OK") {LED2.set();}
          });
        });
      });
    });
  });
}

The Pico's green light should switch on if the http response is OK.

I tried this way aswell but still no joy.

E.on('init', function() {
  Serial1.setup(115200, { rx: B7, tx : B6 });
  var wifi = require("ESP8266WiFi_0v25").connect(Serial1, function(err) {
    if (err) throw err;
    wifi.reset(function(err) {
      if (err) throw err;
      wifi.connect("xxx","xxx", function(err) {
        if (err) throw err;
        require("http").get("http://www.pur3.co.uk/hello.txt", function(res) {
          console.log("Response: ",res);
          res.on('data', function(d) {
            console.log("--->"+d);
            if (res.statusMessage == "OK") {LED2.set();}
          });
        });
      });
    });
  });
});