Fill up localStorage completely on a given page.

maxLocalStorage.js

var DATA = [
    '0',
    '0000000000',
    '0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
];
var chunkSize, i, printFactor;
var chunkIndex = (DATA.length - 1);
while (chunkIndex >= 0) {
    try {
        chunkSize = DATA[chunkIndex].length;
        i = 0;
        printFactor = Math.pow(10, 5 - Math.log10(chunkSize));

        console.log("Filling your localStorage up with %d-byte chunks...", chunkSize);

        while (++i) {
            window.localStorage['garbage'+i] = DATA[chunkIndex];

            if (i % printFactor == 0) {
                console.log("%d chunks saved to localStorage for this chunk size.", i);
            }
        }
    } catch (e) {
        if (chunkIndex == 0) {
            console.log("All full: %s", e);
        }
        chunkIndex--;
    }
}