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Tracking w/ localStorage
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <title>PAGE A</title> | |
| </head> | |
| <body> | |
| <h1>PAGE A</h1> | |
| <a href="page-b.html">Go to page B</a> | |
| <hr> | |
| <a href="" id="reset-tracking">RESET TRACKING</a> | |
| <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js"></script> | |
| <script src="tracking.js"></script> | |
| <script> | |
| document.addEventListener('DOMContentLoaded', function (e) | |
| { | |
| console.log('DOM loaded...', document.title); | |
| var int = setInterval(function () | |
| { | |
| var cache = getCache(); | |
| if (cache.indexOf('PAGE B') !== -1) | |
| { | |
| console.log('client has been way ahead...'); | |
| $.get('./remote.json', function (response) | |
| { | |
| console.log('REMOTE REQUESTED JSON', response); | |
| } | |
| ); | |
| resetCache(); | |
| clearInterval(int); | |
| } | |
| }, 100); | |
| document.querySelector('#reset-tracking').addEventListener('click', function (e) | |
| { | |
| e.preventDefault(); | |
| resetCache(); | |
| console.log('current tracked...', getCache()); | |
| }); | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <title>PAGE B</title> | |
| </head> | |
| <body> | |
| <h1>PAGE B</h1> | |
| <a href="page-a.html">Go to page A</a> | |
| <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js"></script> | |
| <script src="tracking.js"></script> | |
| <script> | |
| document.addEventListener('DOMContentLoaded', function (e) | |
| { | |
| console.log('DOM loaded...', document.title); | |
| console.log('current tracked...', getCache()); | |
| setCache(document.title); | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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| { | |
| "foo": "bar" | |
| } |
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| function getCache() | |
| { | |
| var tracked = window.localStorage.getItem('visited'); | |
| if (!tracked) | |
| { | |
| tracked = []; | |
| } | |
| else | |
| { | |
| tracked = JSON.parse(tracked); | |
| } | |
| return tracked; | |
| } | |
| // ---------------------------------------------- | |
| function setCache(id) | |
| { | |
| var tracked = getCache(); | |
| tracked.push(id); | |
| window.localStorage.setItem('visited', JSON.stringify(tracked)); | |
| } | |
| // ---------------------------------------------- | |
| function resetCache() | |
| { | |
| window.localStorage.removeItem('visited'); | |
| } |
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