Created
February 26, 2021 22:37
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fill up indexedDB with at least 2 gigs of junk
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var one = new Array(267386880/2 - 1000).join('a') | |
// This works on all devices/browsers, and uses IndexedDBShim as a final fallback | |
var indexedDB = window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB || window.shimIndexedDB; | |
// Open (or create) the database | |
var open = indexedDB.open("MyDatabase", 1); | |
// Create the schema | |
open.onupgradeneeded = function() { | |
var db = open.result; | |
var store = db.createObjectStore("MyObjectStore", {keyPath: "id"}); | |
var index = store.createIndex("NameIndex", ["name.last", "name.first"]); | |
}; | |
open.onsuccess = function() { | |
// Start a new transaction | |
var db = open.result; | |
var tx = db.transaction("MyObjectStore", "readwrite"); | |
var store = tx.objectStore("MyObjectStore"); | |
var index = store.index("NameIndex"); | |
// Add some data | |
for(i=0;i<40;i++) { | |
store.put({id: 100 + i, name: {first: one, last: "Doe"}, age: 42}); | |
} | |
// Query the data | |
var getJohn = store.get(12345); | |
var getBob = index.get(["Smith", "Bob"]); | |
getJohn.onsuccess = function() { | |
console.log(getJohn.result.name.first); // => "John" | |
}; | |
getBob.onsuccess = function() { | |
console.log(getBob.result.name.first); // => "Bob" | |
}; | |
// Close the db when the transaction is done | |
tx.oncomplete = function() { | |
console.log("DONE") | |
db.close(); | |
}; | |
} |
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