Either you attempted to invoke one of the Function prototype methods on an object that was not a Function object, or you used an object in a function call context. For example, the following code produces this error because example is not a function.
 Copy Code | |
|---|---|
var example = new Object(); // Create a new object called "example". var x = example(); // Try and call example as if it were a function. | |
To correct this error
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Only call Function prototype methods on Function objects.
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Ensure that you use the function call operator () to call functions only.
See Also
