What causes Chrome to display object logs inconsistently?

Attempting to integrate the Google Analytics API with Angular, I first load the analytics script:

<script src="https://apis.google.com/js/client.js"></script>

After loading the script, I use console.log to check the global gapi variables created by the API script. The object is returned as expected, containing an auth property. However, gapi.auth shows as undefined.

If I introduce a two-second delay before running the function, it works correctly. Here's an illustration of what happens:

https://i.sstatic.net/wGLNM.png

Interestingly, all properties are present in the initial object:

https://i.sstatic.net/6sq3z.png

The later version has a preview while the earlier one does not. Could this be why I can only access the properties after waiting for 2 seconds?


UPDATE:

To address the issue of waiting for gapi.auth to be loaded, I added the following checker at the beginning of my script. However, it seems to be stuck and never completes:

while (gapi.auth === undefined) {
    console.log("Still undefined");
}
console.log("Loaded now");

https://i.sstatic.net/aDjNh.png

Answer №1

When using the console.log function, it's important to note that the object provided as arguments is not immediately evaluated. The evaluation only occurs when the object is viewed or expanded in the log window. This means if the properties of the object change before being viewed, you will see a snapshot of the object as it was when first opened. Opening the log too early may result in seeing an empty object due to this delayed evaluation process.

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