Selenium & Node.js: Switching To Created Tab Dynamically

In the case of 1 tab, the newest tab will always be the last tab. Same applies if it is the last tab that is used to open a new tab. The following code will switch to last tab. EDI

Solution 1:

Yeah people do things all the time that they don't completely understand and don't realize that the code doesn't always work as they expect.

As Jim pointed out, the order of the window handles (tabs) in the returned array from .getAllWindowHandles() is not guaranteed. You can call .getAllWindowHandles(), store that list as before, create your new tab, call .getAllWindowHandles() again and store that new list as after, and then compare the two and find the handle in the new list that doesn't exist in the old list... that's the handle of your newly created tab.

I don't do JS but you can use the .filter() function to do this comparison.

functionarray_diff(a, b) {
    return a.filter(function(value) {
        return (b.indexOf(value) === -1);
    });
}

console.log(array_diff(["a", "b", "c"], ["a", "b"]));

This returns ["c"].

I can imagine you doing something like

before = driver.getAllWindowHandles();
// do something that creates a new window/tab// might need to wait for the new window to be created
after = driver.getAllWindowHandles();
handle = array_diff(after, before);
driver.switchTo().window(handle);