Question

I have a function that gets all the keys of local storage and sends it to you via email:

function sendLocalStorageByEmail(recipient) {
// create localstorage string
var output = "";


for (var key in localStorage) {
    output += key + "\n";
    output += localStorage[key] + "\n";
    output += "\n";
}

// create temporary anchor to emulate mailto click in new tab
var anchor = document.createElement("a");
anchor.href = "mailto:" + recipient + "?subject=Names for tonight&body=" + encodeURIComponent(output);
anchor.style.display = "none";
anchor.setAttribute("target", "_blank");
anchor.appendChild(document.createTextNode(""));
document.body.appendChild(anchor);

if (anchor.click) {
    return anchor.click();
}

Since the keys are a four digit number I would like to sort them via numerical order first. My question is, since localstorage data is stored as an string, and most sorting is done via an array. Am I going to have to convert it to a array, and then back again?

If someone can help me with this, it would be much appreciated.

Answer 1

function sendLocalStorageByEmail(recipient) {
    var output = '',
        arr = [],
        anchor = document.createElement("a");

    for (key in localStorage) {
        if (localStorage.hasOwnProperty(key) && !isNaN(key)) {
            arr.push(key);
        }
    }

    arr.sort(function(a, b) {
        return a.toLowerCase().localeCompare(b.toLowerCase());
    });

    for (var i=0; i<arr.length; i++) {
        output += arr[i] + "\n" + localStorage[arr[i]] + "\n\n";
    }

    anchor.href = "mailto:" + recipient + "?subject=Names for tonight&body=" + encodeURIComponent(output);
    anchor.style.display = "none";
    anchor.setAttribute("target", "_blank");
    anchor.appendChild(document.createTextNode(""));
    document.body.appendChild(anchor);

    if (anchor.click) {
        return anchor.click();
    }
}​