The arguments object is an Array-like object accessible inside functions that contains the values of the arguments passed to that function. For example, let’s see how to use arguments object inside sum function,
1 2 3 4 5 6 7 8 9 | function sum() { var total = 0; for (var i = 0, len = arguments.length; i < len; ++i) { total += arguments[i]; } return total; } sum(1, 2, 3) // returns 6 |
Note: You can’t apply array methods on arguments object. But you can convert into a regular array as below.
1 | var argsArray = Array.prototype.slice.call(arguments); |
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