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gabrysiak/local-storage-size.js

Created December 17, 2014 14:48
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Javascript find size of local storage
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local-storage-size.js
// based on answer to question
// http://stackoverflow.com/questions/4391575/how-to-find-the-size-of-localstorage
(function showLocalStorageSize(){
function stringSizeBytes(str) {
return str.length * 2;
}
function toMB(bytes) {
return bytes / 1024 / 1024;
}
function toSize(key) {
return {
name: key,
size: stringSizeBytes(localStorage[key])
}
}
function toSizeMB(info) {
info.size = toMB(info.size).toFixed(2) + ' MB';
return info;
}
var sizes = Object.keys(localStorage).map(toSize).map(toSizeMB);
console.table(sizes);
}());
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