How Can I Keep The Value Of Variable After Reload Browser In Chrome Extensions

I am writing my first chrome extension and I am kind of new in this field. My goal is sending url and email to a PHP server, but for now I send them to console. My problem is savin

Solution 1:

My codes to save a variable and to load a variable:

// Saving
chrome.storage.sync.set({"variableName": value});
// Loading 1 thing
chrome.storage.sync.get("variableName", function(result){
    // Showing the requested variable value
    alert(result.variableName);
});
// Loading more things
chrome.storage.sync.get(["variableName", "variableNameTheSecond"], function(result){
    // Showing first the first one and then the second one
    alert(result.variablename);
    alert(result.variableNameTheSecond);
});

I hope this helps you, greets

Ebbe