Introducing DOCJSLIB Version 2.0: Connect-Three Board Game - Doc JavaScript | WebReference

Introducing DOCJSLIB Version 2.0: Connect-Three Board Game - Doc JavaScript


The Connect-Three Board Game's Code

<HTML>
<HEAD>
</HEAD>
<BODY>
<SCRIPT LANGUAGE="JavaScript1.2">
<!--
// Copyright (c) 2000 internet.com Corp.
// http://www.webreference.com/js/
// License is granted if and only if this entire
// copyright notice is included. By Yehuda Shiran.
// Begin DOCJSLIB version 2.0. Released Oct 26, 1998.
// This is DOCJSLIB library.
// It begins in this comment and continues until the matching comment
// The matching comment is "End DOCJSLIB ...".
// It should not be normally touched.
// docjslib is a cross-browser library.
// You should not worry about the browser in your code.
// This version includes the following functions (numbers to the
//      left designate version of DOCJSLIB where first introduced:
//   1.0 getSrc (gets the image's URL of a DHTML element, url)
//   1.0 setSrc (sets the image's URL of a DHTML element)
//   2.0 getWidth (gets the DHTML element's width, pixels)
//   2.0 getVisibility (gets the DHTML element's visibility, true or false)
//   2.0 setVisibility (sets the DHTML element's visibility, true or false)
//   2.0 setPosFromLeft (sets the DHTML element's horiz. position,
//       pixels from left)
//   2.0 setZposition (set the Z position of the DHTML element, integer)
//   1.0 makeImage (creates an image-based DHTML element)
//   2.0 makeBox (creates a DHTML container)
//
var IE4 = (document.all) ? true : false;
var NS4 = (document.layers) ? true : false;
function getSrc(id) {
  if (NS4) {return eval("document." + id + ".document." + id + "img.src")}
  else {return eval("document.all." + id + "img.src")}
}
function setSrc(id, url) {
  if (NS4) {eval("document." + id + ".document." + id + "img").src = url}
  else {eval("document.all." + id + "img").src = url}
}
function getWidth(id) {
  if (NS4) {return eval("document." + id + ".clip.width")}
  else {return eval("document.all." + id + ".style.pixelWidth")}
}
function getVisibility(id) {
  if (NS4) {
    if (eval("document." + id).visibility == "show") return true
    else return false;
  }
  else {
   if (eval("document.all." + id).style.visibility == "visible") return true
    else return false;
  }
}
function setVisibility(id, flag) {
  if (NS4) {
    var str = (flag) ? 'show' : 'hide';
    eval("document." + id).visibility = str;
  }
  else {
    var str = (flag) ? 'visible' : 'hidden';
    eval("document.all." + id).style.visibility = str;
  }
}
function setPosFromLeft(id, xCoord) {
  if (NS4) {eval("document." + id).left = xCoord}
  else {eval("document.all." + id).style.left = xCoord}
}
function setZposition(id, z) {
  if (NS4) {eval("document." + id).zIndex = z}
  else {eval("document.all." + id).style.zIndex = z}
}
function makeImage(imgID,          // given id
                   imgURL,         // image URL
                   imgHeight,      // image height
                   imgWidth,       // image width
                   imgAlt,         // alternative image
                   posFromLeft,    // absolute position from left of window
                   posFromTop,     // absolute position from top of window
                   clickParam1,    // parameter passed to "onclick" handler
                   clickParam2)    // parameter passed to "onclick" handler
  {
  document.write(
    '<STYLE TYPE="text/css">',
    '#', imgID, ' {',
      'position: absolute;',
      'left: ', posFromLeft, ';',
      'top: ', posFromTop, ';',
      'width: ', imgWidth, ';',
      'z-index: 1',
    '}',
    '</STYLE>',
    '<DIV ID="', imgID, '">',
    '<A HREF="javascript:', "handleImageClick('", imgID, "'", ',',
    clickParam1, ',', clickParam2, ')">',
    '<IMG NAME="', imgID, 'img" ID="', imgID, 'img" SRC="', imgURL, '" ALT="',
    imgAlt, '" BORDER="0" ', 'HEIGHT="', imgHeight, '" WIDTH="', imgWidth,
    '">', '</A></DIV>'
  );
}
function makeBox(boxID,           // given id
                 htmlFiller,      // HTML filler
                 boxWidth,        // box width
                 posFromLeft,     // absolute position from left of window
                 posFromTop,      // absolute position from top of window
                 boxBg,           // box background color
                 boxColor,        // html filler text color
                 boxVisibility)   // visibility
 {
  var padding = (NS4) ? '' : 'padding: 3 0 3 3;';
  var visibility = (boxVisibility) ? 'visible' : 'hidden';
  document.write(
    '<STYLE TYPE="text/css">',
    '#', boxID, ' {',
      'position: absolute;',
      'left: ', posFromLeft, '; top: ', posFromTop, ';',
      'width: ', boxWidth, ';',
      'layer-background-color: ', boxBg, ';',
      'background-color: ', boxBg, ';',
      'visibility: ', visibility, ';',
      'border-width: 2;',
      'border-style: solid;',
      'border-color: ', boxColor, ';',
      padding,
      'z-index: 1',
    '}',
    '</STYLE>',
    '<DIV ID="', boxID, '">',
    htmlFiller,
    '</DIV>'
  );
}
//
// End DOCJSLIB Version 2.0
//
function rowComplete() {
  var lastPlayedBy = grid[1][1];
  if ((lastPlayedBy != "") &&
      (grid[2][1] == lastPlayedBy) &&
      (grid[3][1] == lastPlayedBy)) return(true);
  lastPlayedBy = grid[1][2];
  if ((lastPlayedBy != "") &&
      (grid[2][2] == lastPlayedBy) &&
      (grid[3][2] == lastPlayedBy)) return(true);
  lastPlayedBy = grid[1][3];
  if ((lastPlayedBy != "") &&
      (grid[2][3] == lastPlayedBy) &&
      (grid[3][3] == lastPlayedBy)) return(true);
  lastPlayedBy = grid[1][1];
  if ((lastPlayedBy != "") &&
      (grid[1][2] == lastPlayedBy) &&
      (grid[1][3] == lastPlayedBy)) return(true);
  lastPlayedBy = grid[2][1];
  if ((lastPlayedBy != "") &&
      (grid[2][2] == lastPlayedBy) &&
      (grid[2][3] == lastPlayedBy)) return(true);
  lastPlayedBy = grid[3][1];
  if ((lastPlayedBy != "") &&
      (grid[3][2] == lastPlayedBy) &&
      (grid[3][3] == lastPlayedBy)) return(true);
  lastPlayedBy = grid[1][1];
  if ((lastPlayedBy != "") &&
      (grid[2][2] == lastPlayedBy) &&
      (grid[3][3] == lastPlayedBy)) return(true);
  lastPlayedBy = grid[1][3];
  if ((lastPlayedBy != "") &&
      (grid[2][2] == lastPlayedBy) &&
      (grid[3][1] == lastPlayedBy)) return(true);
}
function itsAtie() {
  for( var i = 1; i <= 3; i++)
    for( var j = 1; j <= 3; j++)
      if (grid[i][j] == "") return(false);
  return(true);
}
function handleImageClick(id, param1, param2) {
    if (getSrc(id).indexOf('initialbutton.gif') < 0) return;
    if (lastPlayedBy == "o") {
      setSrc(id, "xbutton.gif");
      lastPlayedBy = "x";
    }
    else {  // lastPlayedBy = "x"
      setSrc(id, "obutton.gif");
      lastPlayedBy = "o";
    }
    grid[param1][param2] = lastPlayedBy;
    if (rowComplete()) {
      alert("The " + lastPlayedBy + " wins");
      window.location.reload();
    }
    else if (itsAtie()) {
           alert("It's a tie");
           window.location.reload();
         }
}
var lastPlayedBy = "o";
var grid = new Array();
grid[1] = new Array();
grid[2] = new Array();
grid[3] = new Array();
for (var i = 1; i <= 3; i++)
  for (var j = 1; j <= 3; j++)
    grid[i][j] = "";
var xBase = 8;
var yBase = 8;
for (var i = 1; i <= 3; i++) {
  for (var j = 1; j <= 3; j++) {
    makeImage("box" + i + "" + j,    // id
              "initialbutton.gif",   // URL
              100,                   // height
              100,                   // width
              "game box",            // alternative
               xBase + (i-1) * 108,  // position from left
               yBase + (j-1) * 108,  // position from top
               i,                    // parameter passed to onclick handler
               j);                   // parameter passed to onclick handler
  }
}
// -->
</SCRIPT>
</BODY>
</HTML>

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Created: October 26, 1998
Revised: October 29, 1998

URL: http://www.webreference.com/js/column28/code1.html