Revision: 4366
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at December 2, 2007 06:50 by 1man
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function containerScope(){
var a = [];
var b = {};
var c = true;
var d = 22;
function argumentsObject(a, b, c, d){
console.log(arguments.length);
console.log(arguments[0]);//Array
console.log(arguments[1]);//Object
console.log(arguments[2]);//true
console.log(arguments[3]);//22
arguments[3] = 55;//I have now changed d as well!
console.log(arguments[3]);
console.log(d);
}
argumentsObject(a, b, c, d);
}
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Every function has an object called the arguments object. This is an object that contains all the arguments that were passed to the function. The example below shows how to access these. Very rarely used but useful to know. Note: it may look like an array, but it's better to think of it as an object with numbered properties.
Initial Title
Accessing Arguments Using the Arguments Object
Initial Tags
object, function
Initial Language
JavaScript