[WIP] How to: PhantomJs

Categories How To, Tools

How to get the HTTP response code of the page:
If you mainly used curl for troubleshooting, you actually will be surprised that HTTP response code is not readily available on PJS … although its not that hard to get either

console.log('---- Loading a web page -----');
var page = require('webpage').create(), 
    url = 'http://mandog-test.ml/';

page.open(url, function (status) {
  console.log("Status: " + status); // This is not the status we are looking for
  console.log('---- Exiting ... ----');
  phantom.exit();
});

page.onResourceReceived = function(response) {
  console.log(response.status); // This is the status we need
};

$ ./phantomjs ../phantom_test.js 
---- Loading a web page -----
200
200
200
200
---- Exiting ... ----
null

– What is that null – lets use --debug flag to inspect more closely — any other flags?
– Why is the response code returned multiple times and how to display it once accurately?

How to get the all headers (nicely formatted!) of the page:

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How to get a particular header (both key and value)

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How to execute a Javascript function

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