Question

This function not work correctly. How to make work this function? How to determine execute context this function?

function getFolderIdByName() {
    var test;
    chrome.bookmarks.getTree(function(bookmarkTreeNodes) {
        test = 123;
    });
    console.log(test); \\ undefined 
}

Answer 1

function getFolderIdByName() {
        var test;
        chrome.bookmarks.getTree(function(bookmarkTreeNodes) {
            test = 123;
        });
        console.log(test); \\ undefined 
}

is an asynchronous function

So order of execution is

• var test;
• console.log(test);
• chrome.bookmarks.getTree(function(bookmarkTreeNodes) {
test = 123;
});

So console.log(test); is undefined.

Reference.

• Chrome Asynchronous function