Determine if a webpage forwards to a new link with the help of phantomjs, flagging any issues exclusively for designated websites

As a beginner in frontend development, I have a question that may seem simple. Please be patient with me.

 var page = require('webpage').create(),
 system = require('system');

if (system.args.length === 1) {
  console.log('Usage: useragent.js <some URL>');
  phantom.exit();
}

url = system.args[1];
page.settings.userAgent = 'Mozilla/5.0 (Linux; U; Android 2.3.5; en-gb; HTC Desire HD A9191 Build/GRJ90) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 Mobile Safari/533.1';
page.open(url,function (status) {
    if (status !== 'success') {
            console.log(url+', Unable to access network');
    } else {
            var redirectUrl = page.evaluate(function () {
            return document.URL;
            }); 
    }   
    phantom.exit();
});  

Running the code for works smoothly and redirects to

However, when executed on , it throws the following error : s/seo_link_crypter.js:748

Answer №1

The reason for this issue is that the webpage you're attempting to access contains an error.

Give this a try:

page.onError = function (msg, trace) {
    console.log("[ERROR]:" + msg);
    trace.forEach(function(item) {
        console.log('  ', item.file, ':', item.line);
    })
}

You'll discover the root cause.

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