localStorage/sessionStorage

---------------------------

length

---------------------------

setItem("key", "value")

getItem("key") : "value"

key(i) : "key"

removeItem("key")

clear()

• size=4KB
• key-value pairs
• sent with every HTTP request

localStorage.setItem("key", "value"); // overrides if key already exists

var valueString = localStorage.getItem("key");

localStorage["key"] = "value";

var value = localStorage["key"];

if (window["localStorage"]) {...}

for (var i = 0; i < localStorage.length; i++) {

var key = localStorage.key(i);

var value = localStorage[key];

}

for (var key in localStorage) {

var value = localStorage[key];

}

localStorage.removeItem("key");

try {

localStorage.setItem(myKey, myValue);

} catch(e) {

if (e == QUOTA_EXCEEDED_ERR) {}

}

if (window["Worker"]) {

var status = document.getElementById("status");

status.innerHTML = "Bummer, no Web Workers";

}

var worker = new Worker("worker.js");

var worker2 = new Worker("worker.js");

worker.postMessage("ping");

worker.onmessage = function (event) {

var message = "Worker says " + event.data;

var worker = event.target;

};

onmessage = pingPong;

function pingPong(event) {

if (event.data == "ping") {

postMessage("pong");

}

}

importScripts("http://bigscience.org/nuclear.js","mylibs/atomsmasher.js");

worker.terminate();

close();

worker.onerror = function(error) {

document.getElementById("output").innerHTML ="There was an error in " + error.filename +" at line number " + error.lineno +": " + error.message;

}