JavaScript arguments multi-parameter transfer function _ basics

1, arguments
An array corresponding to the arguments passed to a function.
In a function body, the identifier arguments references a special property of the arguments object. You can get the parameter values that are passed to the function by number (not by name).
For example (use in prototype.js):

Copy Code code as follows:

function $ () {
var elements = new Array ();
for (var i = 0; i < arguments.length; i++) {
var element = Arguments[i];
if (typeof element = = ' String ')
element = document.getElementById (element);
if (arguments.length = 1)
return element;
Elements.push (Element);
}
return elements;
}

The argument object also defines the Callee property (regardless of this).