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JavaScript Basics

Inserting Javascript

Complete Tutorial

Advance DHTML Tutorial

Maze

Move your player (the star symbol "*") around the maze by clicking the appropriate up, down, left, and right buttons. Get to the finish (the dollar sign "$") in the lower-right corner to win!

Insert into <HEAD>

<SCRIPT LANGUAGE="JavaScript">

<!-- Begin
var line = "";
var x = 0;
var y = 0;
var full="*";
var blank = ".";
var wall = "#";
var goal = "$";

var fill = "";

function makeboard() {
for (var i=1; i<= 10; i++) this[i] = new makeRow();
return this;
}

function makeRow() {
for (var i=1; i<= 10; i++) this[i]=blank;
return this;
}

function clearBoard (form) {
x = 0;
y = 0;
form.xval.value = 1;
form.yval.value = 1;
for (var i=1; i<= 10; i++)
for (var j=1; j<= 10; j++)
theBoard[i][j]=blank;
drawMaze();
fillBoard(form);
return;
}
function fillBoard (form) {
line = "";
form.grid.value = "";
for (var i=1; i<= 10; i++)
for (var j=1; j<= 10; j++)
line += theBoard[i][j];
form.grid.value=line;
}
function plot (v, h) {
theBoard[v][h] = fill;
}
function drawMaze() {
theBoard[10][10] = goal;
theBoard[1][2] = wall;
theBoard[2][2] = wall;
theBoard[4][1] = wall;
theBoard[4][2] = wall;
theBoard[4][3] = wall;
theBoard[2][3] = wall;
theBoard[5][2] = wall;
theBoard[6][2] = wall;
theBoard[2][5] = wall;
theBoard[4][5] = wall;
theBoard[5][5] = wall;
theBoard[2][6] = wall;
theBoard[2][7] = wall;
theBoard[9][10] = wall;
theBoard[9][9] = wall;
theBoard[8][9] = wall;
theBoard[7][9] = wall;
theBoard[10][7] = wall;
theBoard[9][7] = wall;
theBoard[8][7] = wall;
theBoard[6][7] = wall;
theBoard[9][2] = wall;
theBoard[9][3] = wall;
theBoard[9][4] = wall;
theBoard[8][2] = wall;
theBoard[7][4] = wall;
theBoard[7][5] = wall;
theBoard[6][5] = wall;
theBoard[5][7] = wall;
theBoard[5][8] = wall;
theBoard[5][9] = wall;
theBoard[4][9] = wall;
}
function update(form) {
var horiz = eval(form.xval.value);
var vert = eval(form.yval.value);
plot(vert,horiz);
fillBoard(form);
return;
}
function initBoard() {
theBoard = new makeboard();
fill = full;
clearBoard(document.board);
update(document.board);
}
function decx(form) {
fill = blank;
update(form);
checkx = eval(form.xval.value - 1);
checky = form.yval.value;
if (form.xval.value > 1) {
if (theBoard[checky][checkx] != wall) {
form.xval.value=eval(form.xval.value - 1);
}
else {
alert("THUD!\nYou hit a wall.");
}
if (theBoard[checky][checkx] == goal) {
alert("YOU WIN!");
   }
}
fill = full;
update(form);
}
function incx(form) {
fill = blank;
update(form);
checkx = eval(1 * form.xval.value + 1);
checky = form.yval.value;
if (form.xval.value < 10) {
if (theBoard[checky][checkx] != wall) {
form.xval.value=eval(1 * form.xval.value + 1);
}
else {
alert("THUD!\nYou hit a wall.");
}
if (theBoard[checky][checkx] == goal) {
alert("YOU WIN!");
   }
}
fill = full;
update(form);
}
function decy(form) {
fill = blank;

update(form);
checkx = form.xval.value;

checky = eval(form.yval.value - 1);
if (form.yval.value > 1) {
if (theBoard[checky][checkx] != wall) {
form.yval.value=eval(form.yval.value - 1);
}
else {
alert("THUD!\nYou hit a wall.");
}
if (theBoard[checky][checkx] == goal) {
alert("YOU WIN!");
   }
}
fill = full;
update(form);
}
function incy(form) {
fill = blank;
update(form);
checkx = form.xval.value;
checky = eval(1 * form.yval.value + 1);
if (form.yval.value < 10) {
if (theBoard[checky][checkx] != wall) {
form.yval.value=eval(1 * form.yval.value + 1);
}
else {
alert("THUD!\nYou hit a wall.");
}
if (theBoard[checky][checkx] == goal) {
alert("YOU WIN!");
   }
}
fill = full;
update(form);
}
function cheater (form) {
alert("You can't change this value manually.\nPlease use the buttons.");
clearBoard(form);
update(form);
}
//  End -->
</script>

Insert into <BODY>

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