JavaScript Objects and Arrays

var x = newObject();
x.name = "Fred";
x.age = 42;
 
x.getAge = function () {
    return this.age ;
};
 
document.write ( x.name);
document.write ( "<br/>" );
document.write ( x.age );
document.write ( "<br/>" );
document.write ( x.getAge ());
 
// Output: 
// Fred 
// 42 
// 42

var x = newObject();
 
// Add two expando properties that cannot be written in the
// object.property syntax.
// The first contains invalid characters (spaces), so must be 
// written inside square brackets.
x [ "invalid identifier" ] = "This is the property value";
 
// The second expando name is a number, so it also must 
// be placed inside square brackets
x [ 100] = "100" ;

// An array with three elements
var x = newArray(3);
 
// Add some data
x [0] = "Hello";
x [1] = 42;
x [2] = new Date(2000, 1, 1);
 
document.write ( "original length is: " + x.length);
document.write ( "<br/>" );
 
// Add some expando properties 
x.expando = "JavaScript! "; 
x[ "another Expando" ] = "Windows";
 
// This will still display 3, since the two expando properties don't affect the length.
document.write ( "new length is : " + x.length);
 
// Output: 
// original length is: 3 
// new length is : 3 

var myText = "";
var numbers = [2, 5, 6, 77, 88];
 
numbers.forEach(myFunction);
    document.getElementById("demo").innerHTML = myText;
 
function myFunction(value, index, array) {
    myText = myText + value + "<br>";
}

// The size of the table.
var tableSize = 5;
// Loop counters. 
var i, j;
 
// Set the length of the array to tableSize + 1.  
// The first array index is zero, not 1. 
var resultTable = new Array(tableSize + 1);
 
// Loop for each major number (each row in the table)
for (i = 1; i <= tableSize; i++) {
// Create the columns in the table
    resultTable [i] = new Array(tableSize + 1);
 
// Fill the row with the results of the multiplication
for (j = 1; j <= tableSize; j++) {
        resultTable [i][j] = i * j;
}
}
 
document.write ( ResultTable [3][4]);
document.write ( "<br/>" );
document.write ( ResultTable [5][2]);
document.write ( "<br/>" );
document.write ( ResultTable [1][4]);
 
// Output: 
// 12 
// 10 
// 4