A JavaScript function does not perform any checking on parameter values arguments. Function parameters are the names listed in the function definition.

Function arguments are the real values passed to and received by the function. If a function is called with missing arguments less than declaredthe missing values are set to: Sometimes this is acceptable, but sometimes it is better to assign a default value to the parameter:.

If a function is called with too many arguments more than declaredthese arguments can be reached using the arguments object.

The argument object contains an array of the arguments used when the function was called invoked.

This way you can simply use a function to find for instance the highest value in a list of numbers:. JavaScript arguments are passed by value: The function only gets to know the values, not the argument's locations. Tabs Dropdowns Accordions Convert Weights Animated Buttons Side Navigation Top Navigation JS Animations Modal Boxes Progress Bars Parallax Login Form HTML Includes Google Maps Loaders Tooltips Slideshow Filter List Sort List.

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Calling a JavaScript function with variable arguments

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