发布于 2017-08-16 02:35:48 | 101 次阅读 | 评论: 0 | 来源: 网友投递
这里有新鲜出炉的Javascript教程，程序狗速度看过来！
JavaScript客户端脚本语言
Javascript 是一种由Netscape的LiveScript发展而来的原型化继承的基于对象的动态类型的区分大小写的客户端脚本语言，主要目的是为了解决服务器端语言，比如Perl，遗留的速度问题，为客户提供更流畅的浏览效果。
本文实例为大家分享了JS Canvas实现五子棋游戏的具体代码，供大家参考，具体内容如下
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>五子棋</title>
<style type='text/css'>
canvas {
display: block;
margin: 50px auto;
box-shadow: -2px -2px 2px #efefef, 5px 5px 5px #b9b9b9;
cursor: pointer;
}
.btn-wrap {
display: flex;
flex-direction: row;
justify-content:center;
}
.btn-wrap div {
margin: 0 10px;
}
div>span {
display: inline-block;
padding: 10px 20px;
color: #fff;
background-color: #EE82EE;
border-radius: 5px;
cursor: pointer;
}
div.unable span {
background: #D6D6D4;
color: #adacaa;
}
#result-wrap {text-align: center;}
</style>
</head>
<body>
<h3 id="result-wrap">--益智五子棋--</h3>
<canvas id="chess" width="450px" height="450px"></canvas>
<div class="btn-wrap">
<div id='restart' class="restart">
<span>重新开始</span>
</div>
<div id='goback' class="goback unable">
<span>悔棋</span>
</div>
<div id='return' class="return unable">
<span>撤销悔棋</span>
</div>
</div>
<script type="text/javascript" charset="utf-8">
var over = false;
var me = true; //我
var _nowi = 0, _nowj = 0; //记录自己下棋的坐标
var _compi = 0, _compj = 0; //记录计算机当前下棋的坐标
var _myWin = [], _compWin = []; //记录我，计算机赢的情况
var backAble = false, returnAble = false;
var resultTxt = document.getElementById('result-wrap');
var chressBord = [];//棋盘
for(var i = 0; i < 15; i++){
chressBord[i] = [];
for(var j = 0; j < 15; j++){
chressBord[i][j] = 0;
}
}
//赢法的统计数组
var myWin = [];
var computerWin = [];
//赢法数组
var wins = [];
for(var i = 0; i < 15; i++){
wins[i] = [];
for(var j = 0; j < 15; j++){
wins[i][j] = [];
}
}
var count = 0; //赢法总数
//横线赢法
for(var i = 0; i < 15; i++){
for(var j = 0; j < 11; j++){
for(var k = 0; k < 5; k++){
wins[i][j+k][count] = true;
}
count++;
}
}
//竖线赢法
for(var i = 0; i < 15; i++){
for(var j = 0; j < 11; j++){
for(var k = 0; k < 5; k++){
wins[j+k][i][count] = true;
}
count++;
}
}
//正斜线赢法
for(var i = 0; i < 11; i++){
for(var j = 0; j < 11; j++){
for(var k = 0; k < 5; k++){
wins[i+k][j+k][count] = true;
}
count++;
}
}
//反斜线赢法
for(var i = 0; i < 11; i++){
for(var j = 14; j > 3; j--){
for(var k = 0; k < 5; k++){
wins[i+k][j-k][count] = true;
}
count++;
}
}
// debugger;
for(var i = 0; i < count; i++){
myWin[i] = 0;
_myWin[i] = 0;
computerWin[i] = 0;
_compWin[i] = 0;
}
var chess = document.getElementById("chess");
var context = chess.getContext('2d');
context.strokeStyle = '#bfbfbf'; //边框颜色
var backbtn = document.getElementById("goback");
var returnbtn = document.getElementById("return");
window.onload = function(){
drawChessBoard(); // 画棋盘
}
document.getElementById("restart").onclick = function(){
window.location.reload();
}
// 我，下棋
chess.onclick = function(e){
if(over){
return;
}
if(!me){
return;
}
// 悔棋功能可用
backbtn.className = backbtn.className.replace( new RegExp( "(\\s|^)unable(\\s|$)" )," " );
var x = e.offsetX;
var y = e.offsetY;
var i = Math.floor(x / 30);
var j = Math.floor(y / 30);
_nowi = i;
_nowj = j;
if(chressBord[i][j] == 0){
oneStep(i,j,me);
chressBord[i][j] = 1; //我，已占位置
for(var k = 0; k < count; k++){ // 将可能赢的情况都加1
if(wins[i][j][k]){
// debugger;
myWin[k]++;
_compWin[k] = computerWin[k];
computerWin[k] = 6;//这个位置对方不可能赢了
if(myWin[k] == 5){
// window.alert('你赢了');
resultTxt.innerHTML = '恭喜，你赢了！';
over = true;
}
}
}
if(!over){
me = !me;
computerAI();
}
}
}
// 悔棋
backbtn.onclick = function(e){
if(!backAble) { return;}
over = false;
me = true;
// resultTxt.innerHTML = 'o(╯□╰)o，悔棋中';
// 撤销悔棋功能可用
returnbtn.className = returnbtn.className.replace( new RegExp( "(\\s|^)unable(\\s|$)" )," " );
// 我，悔棋
chressBord[_nowi][_nowj] = 0; //我，已占位置 还原
minusStep(_nowi, _nowj); //销毁棋子
for(var k = 0; k < count; k++){ // 将可能赢的情况都减1
if(wins[_nowi][_nowj][k]){
myWin[k]--;
computerWin[k] = _compWin[k];//这个位置对方可能赢
}
}
// 计算机相应的悔棋
chressBord[_compi][_compj] = 0; //计算机，已占位置 还原
minusStep(_compi, _compj); //销毁棋子
for(var k = 0; k < count; k++){ // 将可能赢的情况都减1
if(wins[_compi][_compj][k]){
computerWin[k]--;
myWin[k] = _myWin[i];//这个位置对方可能赢
}
}
resultTxt.innerHTML = '--益智五子棋--';
returnAble = true;
backAble = false;
}
// 撤销悔棋
returnbtn.onclick = function(e){
if(!returnAble) { return; }
// 我，撤销悔棋
chressBord[_nowi][_nowj] = 1; //我，已占位置
oneStep(_nowi,_nowj,me);
for(var k = 0; k < count; k++){
if(wins[_nowi][_nowj][k]){
myWin[k]++;
_compWin[k] = computerWin[k];
computerWin[k] = 6;//这个位置对方不可能赢
}
if(myWin[k] == 5){
resultTxt.innerHTML = '恭喜，你赢了！';
over = true;
}
}
// 计算机撤销相应的悔棋
chressBord[_compi][_compj] = 2; //计算机，已占位置
oneStep(_compi,_compj,false);
for(var k = 0; k < count; k++){ // 将可能赢的情况都减1
if(wins[_compi][_compj][k]){
computerWin[k]++;
_myWin[k] = myWin[k];
myWin[k] = 6;//这个位置对方不可能赢
}
if(computerWin[k] == 5){
resultTxt.innerHTML = 'o(╯□╰)o，计算机赢了，继续加油哦！';
over = true;
}
}
returnbtn.className += ' '+ 'unable';
returnAble = false;
backAble = true;
}
// 计算机下棋
var computerAI = function (){
var myScore = [];
var computerScore = [];
var max = 0;
var u = 0, v = 0;
for(var i = 0; i < 15; i++){
myScore[i] = [];
computerScore[i] = [];
for(var j = 0; j < 15; j++){
myScore[i][j] = 0;
computerScore[i][j] = 0;
}
}
for(var i = 0; i < 15; i++){
for(var j = 0; j < 15; j++){
if(chressBord[i][j] == 0){
for(var k = 0; k < count; k++){
if(wins[i][j][k]){
if(myWin[k] == 1){
myScore[i][j] += 200;
}else if(myWin[k] == 2){
myScore[i][j] += 400;
}else if(myWin[k] == 3){
myScore[i][j] += 2000;
}else if(myWin[k] == 4){
myScore[i][j] += 10000;
}
if(computerWin[k] == 1){
computerScore[i][j] += 220;
}else if(computerWin[k] == 2){
computerScore[i][j] += 420;
}else if(computerWin[k] == 3){
computerScore[i][j] += 2100;
}else if(computerWin[k] == 4){
computerScore[i][j] += 20000;
}
}
}
if(myScore[i][j] > max){
max = myScore[i][j];
u = i;
v = j;
}else if(myScore[i][j] == max){
if(computerScore[i][j] > computerScore[u][v]){
u = i;
v = j;
}
}
if(computerScore[i][j] > max){
max = computerScore[i][j];
u = i;
v = j;
}else if(computerScore[i][j] == max){
if(myScore[i][j] > myScore[u][v]){
u = i;
v = j;
}
}
}
}
}
_compi = u;
_compj = v;
oneStep(u,v,false);
chressBord[u][v] = 2; //计算机占据位置
for(var k = 0; k < count; k++){
if(wins[u][v][k]){
computerWin[k]++;
_myWin[k] = myWin[k];
myWin[k] = 6;//这个位置对方不可能赢了
if(computerWin[k] == 5){
resultTxt.innerHTML = 'o(╯□╰)o，计算机赢了，继续加油哦！';
over = true;
}
}
}
if(!over){
me = !me;
}
backAble = true;
returnAble = false;
var hasClass = new RegExp('unable').test(' ' + returnbtn.className + ' ');
if(!hasClass) {
returnbtn.className += ' ' + 'unable';
}
}
//绘画棋盘
var drawChessBoard = function() {
for(var i = 0; i < 15; i++){
context.moveTo(15 + i * 30 , 15);
context.lineTo(15 + i * 30 , 435);
context.stroke();
context.moveTo(15 , 15 + i * 30);
context.lineTo(435 , 15 + i * 30);
context.stroke();
}
}
//画棋子
var oneStep = function(i,j,me) {
context.beginPath();
context.arc(15 + i * 30, 15 + j * 30, 13, 0, 2 * Math.PI);// 画圆
context.closePath();
//渐变
var gradient = context.createRadialGradient(15 + i * 30 + 2, 15 + j * 30 - 2, 13, 15 + i * 30 + 2, 15 + j * 30 - 2, 0);
if(me){
gradient.addColorStop(0,'#0a0a0a');
gradient.addColorStop(1,'#636766');
}else{
gradient.addColorStop(0,'#d1d1d1');
gradient.addColorStop(1,'#f9f9f9');
}
context.fillStyle = gradient;
context.fill();
}
//销毁棋子
var minusStep = function(i,j) {
//擦除该圆
context.clearRect((i) * 30, (j) * 30, 30, 30);
// 重画该圆周围的格子
context.beginPath();
context.moveTo(15+i*30 , j*30);
context.lineTo(15+i*30 , j*30 + 30);
context.moveTo(i*30, j*30+15);
context.lineTo((i+1)*30 , j*30+15);
context.stroke();
}
</script>
</body>
</html>
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持phperz。