Javascript Tutorial Sample Codes

arrays2.characterMovement.js

var board;
var heroCoord = new Array(2);    // x,y

//print for our perspective
function showBoard() {
    console.log(heroCoord);
    var print = '';
    for(var y=board[0].length-1; y>=0; y--) {
        for(var x=0; x<board.length; x++) {
            if (heroCoord[0] == x && heroCoord[1] == y) {
                print += '[c] ';
            } else {
                print += '[' + board[x][y] + '] ';
            }
        }
        print += '\n';
    }    
    console.log(print);
}

function createBoard(rows, cols) {
    board = new Array(cols);
    
    for(var x=0; x<cols; x++) {
    board[x] = new Array(rows);
        for(var y=0; y<rows; y++) {
            board[x][y] = ' ';
        }
    }
}

function getRandomCoord() {
    var x = parseInt(Math.random() * board.length);
    var y = parseInt(Math.random() * board[0].length);
    
    return [x,y];
}

function moveHero(x,y) {
    heroCoord = [
        Math.min(Math.max(heroCoord[0]+=x, 0), board.length-1),
        Math.min(Math.max(heroCoord[0]+=y, 0), board[0].length-1)
    ];
}

createBoard(5,10);
heroCoord = getRandomCoord();
showBoard(board);
moveHero(1,0);
showBoard(board);
moveHero(-1,2);
showBoard(board);

bubbleSort.js

var a = [1, 2, 34, 203, 3, 746, 200, 984, 198, 764, 9];
 
function bubbleSort(ar)
{
    console.log(ar);
    var swapped;
    
    for(var j=0; j<ar.length-1; j++) {
        
        swapped = false;
        for(var i=0; i<ar.length-1-j; i++) {
            if (ar[i] > ar[i+1]) {
                var temp = ar[i];
                ar[i] = ar[i+1];
                ar[i+1] = temp;
                swapped = true;
            }
        }
        
        console.log(j + ": " + ar);
        if (!swapped) {
            break;
        }
    }
}
 
bubbleSort(a);