Functions
JavaScript allows you to package a block of code into a function, which is a subprogram that performs a particular task. To execute the block of code, you simply “call” the function that contains the code. By packaging code into a function, you can easily this common code in multiple elements and reports, which makes script maintenance much easier.
JavaScript functions behave a little differently than functions in other languages:
• Input arguments do not require reference vs. value specification. (Primitive types are passed by value, whereas objects are passed by reference.)
• Input arguments do not require data type specification
• Return values are optional and do not require data type specification
function max(a,b) // -- Two input arguments
{
if (a > b)
return(a); // -- Return a because it is larger
else
return(b); // -- Return b because it is larger
}
To create and save a custom JavaScript function, see Using the Script Library.
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