Why Does My JavaScript `setTimeout` Function Execute Instantly?

Understanding the Behavior of setTimeout in JavaScript

When attempting to implement a time delay using the setTimeout function, it's essential to grasp why the function may execute instantaneously instead of waiting the intended duration.

The Issue:

In your code, you're mistakenly invoking the function testfunction() immediately and subsequently passing its return value to setTimeout for scheduling. This leads to the immediate execution of the function.

The Solution:

The correct syntax involves removing the parentheses from the function call:

setTimeout(testFunction, 2000);

By omitting the parentheses, you're passing a reference to the function itself to setTimeout instead of executing it immediately and supplying its return value. This ensures that the function's execution is scheduled at the specified delay.

So, to execute the testFunction with a 2-second delay, use this syntax:

setTimeout(testFunction, 2000);

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