Why is my JavaScript function undefined in JSFiddle, and how can I fix it?

JavaScript Execution Anomaly in JSFiddle

You encountered an issue while running JavaScript code in JSFiddle. Your HTML and JavaScript appear correct, yet the "test" function remains undefined when the button is clicked. The console error message suggests that the function is not recognized.

To resolve this issue, it's crucial to understand JSFiddle's default JavaScript execution settings. By default, JSFiddle wraps all JavaScript code in an anonymous function that runs after the document has loaded. This means that any variables or functions defined within the JavaScript code will have local scope within that function and will not be accessible outside of it. Hence, the "test" function is not available in the global scope.

To fix this problem, you need to adjust the "Wrap" setting in JSFiddle. Change it from "onLoad" to "no wrap." This setting will ensure that your JavaScript code is executed immediately, allowing the "test" function to be defined at the global level.

Here's an updated JSFiddle with the "no wrap" setting applied:

http://jsfiddle.net/zalun/Yazpj/1/

Additionally, since you're not utilizing any libraries, you can switch the framework setting to "No Library" to avoid unnecessary overhead.

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