Whenever I utilize console.log("Outputting some text") in JavaScript within Visual Studio 2012 for Windows 8 metro development, where exactly is the text being directed to? Which location should I look at to see it displayed? Despite having the "Output" panel open, I am unable to locate the log text.
Could it be possible that I am not employing the correct function? Is there an alternative function that needs to be utilized to showcase the Output?
If you want to view the JavaScript console, simply go to
DEBUG > Windows > JavaScript Consoleconsole.log() method to write to it. Alternatively, you can use the various WinJS functions available:
For instance, there is WinJS.log() which allows you to log something after setting up the function with WinJS.Utilities.startLog():
WinJS.Utilities.startLog({type: "info", tags: "custom" });
WinJS.log("my message", "info", "custom");
Here are key details about the WinJS logging functions:
startLog(options): Establishes a logger for writing messages containing specified tags to the JavaScript console.
The options object needs to include a type, which should be one of error, warn, info, or perf. Additionally, if you want only specific logs captured, also incorporate tags into the object with a space-separated list of desired tags to log.
WinJS.log(message, tags, type): Although this function does not come pre-built, it gets generated through your startLog() setup. While you could manually create it as well, utilizing startLog() for console logging is recommended.
To troubleshoot the program in a real-time setting, you have the option to implement an on-screen console.log substitute that can be triggered using the ~ key.
Check out the source code: https://gist.github.com/4012355
If you want to access the log file using the EventViewer, follow these simple instructions:
1. Launch Event Viewer
2. Go to Application and Services Log
3. Expand Microsoft/Windows/AppHost
4. Click on Admin to select it
5. Right-click on Admin and choose View => Show Analytic and Debug Logs
It's possible that I'm responding to an older post, or perhaps you've already found a way to fulfill your purpose. However, when I experimented with console.log() and WinJS.log(), the JavaScript console returned 'undefined' for both. Even after using the 'debugger;' statement to confirm that the code was executing properly. If you require logging for debugging purposes, consider displaying the following on your screen:
<body>
<label id="lblMessage">test</label>
</body>
Then, in your JavaScript code:
function displayMessage(message) {
document.getElementById('lblMessage').innerText = message;
}
Don't forget to call this function where necessary, such as within the app.onactivated function.
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