A link checker using CasperJS

waiter.js

/*jshint strict:false*/
/*global CasperError console phantom require*/
var casper = require('casper').create({
        logLevel: "debug",
        verbose: true
    }),
    interval = 1000 * 60, // 1 minute
    url = 'http://google.com/';

var checkLink = function checkLink() {
    this.echo('Setting up check...');
    this.thenOpen(url, function() {
        this.echo(this.getCurrentUrl());
        var found = this.exists('#selector-to-your-link');
        this.echo(found ? 'link was found' : 'link not found');
        if (found) {
            this.thenClick('#selector-to-your-link').then(function() {
                // add stuff to be done
                // ... then exit
                this.echo('Done.').exit();
            });
        } else {
            this.echo('Scheduling another attempt');
            this.wait(interval);
        }
    });
    this.echo('Check steps added');
    this.run(checkLink);
};

casper.start().then(function() {
    this.echo('Daemon started');
}).run(checkLink);