What are some examples of parameters in JavaScript?
In JavaScript, parameters are variables listed as part of a function's definition. For example, in the function function add(a, b)
, a
and b
are parameters.
Can you give me more examples of functions with parameters?
Sure! Here's another example: function greet(name) { return 'Hello, ' + name; }
Here, name
is a parameter.
What about default parameters?
Great question! You can set default values for parameters like this: function multiply(a, b = 1) { return a * b; }
. If b
is not provided, it defaults to 1.
How do rest parameters work?
Rest parameters allow you to represent an indefinite number of arguments as an array. For example: function sum(...numbers) { return numbers.reduce((acc, num) => acc + num, 0); }
.
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