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February 18, 2016 17:29
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Proof of concept for migrating localStorage from HTTP to HTTPS
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| <!doctype html> | |
| <html> | |
| <head> | |
| <title>localStorage migration to SSL proof of concept</title> | |
| <script type="text/javascript"> | |
| function parseHash() { | |
| if (document.location.hash === '') return new Map(); | |
| var res = new Map(); | |
| document.location.hash.substr(1).split('&').forEach(function(e) { | |
| var kv = e.split('='); | |
| res.set(kv[0], decodeURIComponent(kv[1])); | |
| }); | |
| return res; | |
| } | |
| if (document.location.protocol === 'http:') { | |
| var data = localStorage.getItem('LocalStorage.pb'); | |
| var migrationString = ''; | |
| if (data !== null) { | |
| localStorage.removeItem('LocalStorage.pb'); | |
| migrationString = '#migrate=' + encodeURIComponent(data); | |
| } | |
| document.location = 'https' + document.location.toString().substr(4) + migrationString; | |
| } else { | |
| var hashMap = parseHash(); | |
| if (hashMap.has('migrate')) { | |
| localStorage.setItem('LocalStorage.pb', hashMap.get('migrate')); | |
| history.replaceState('', document.title, window.location.pathname + window.location.search); | |
| } | |
| } | |
| </script> | |
| </head> | |
| <body> | |
| </body> | |
| </html> |
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