有两个疑问，同学们帮忙解答一下
1：分出输赢以后清除画布，重新开始！但是用clearRect(0, 0, canvas.width, canvas.height) 会连边框一起清除。所以只能是刷新页面？
2： 可能是我代码问题，算法有问题好像！ 不会堵我下的棋。而且就算我随便下，它也要好久才能赢！
代码贴上来给大家看一下希望有人帮我看看：
var canvas = document.getElementById('can')
var context = canvas.getContext('2d');
var chess = [];
var wins = [];
var me = true;
var over = false;
//赢法统计数组
var mywin = [];
var computerwin = [];
for (var i = 0; i < 15; i++) {
chess[i] = [];
for (var j = 0; j < 15; j++) {
chess[i][j] = 0;
}
}
for (var i = 0; i < 15; i++) {
wins[i] = [];
for (var j = 0; j < 15; j++) {
wins[i][j] = [];
}
}
//赢法种类的数组
var count = 0;
//所有横线赢法
for (var i = 0; i < 15; i++) {
for (var j = 0; j < 11; j++) {
//wins[0][0][0]=true
//wins[0][1][0]=true
//wins[0][2][0]=true
//wins[0][3][0]=true
//wins[0][4][0]=true
//wins[0][1][1]=true
//wins[0][2][1]=true
//wins[0][3][1]=true
//wins[0][4][1]=true
//wins[0][5][1]=true
for (var k = 0; k < 5; k++) {
wins[i][j + k][count] = true;
}
count++
}
}
//所有竖线赢法
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++
}
}
//所有斜线赢法
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++
}
}
//所有斜线赢法
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++
}
}
for (var i = 0; i < count; i++) {
mywin[i] = 0;
computerwin[i] = 0;
}
context.strokeStyle = '#bfbfbf'
for (var i = 0; i < 15; i++) {
context.moveTo(15 + i * 30, 15);
context.lineTo(15 + i * 30, 435);
context.moveTo(15, 15 + i * 30);
context.lineTo(435, 15 + i * 30);
context.stroke()
}
var oneStep = function (i, j, me) {
context.beginPath();
context.arc(15 + i * 30, 15 + j * 30, 13, 0, Math.PI * 2);
context.closePath()
var yin = context.createRadialGradient(15 + i * 30 + 2, 15 + j * 30 - 2, 13, 15 + i * 30 + 2, 15 + j * 30 - 2, 0)
if (me) {
yin.addColorStop(0, '#0a0a0a')
yin.addColorStop(1, '#636766')
} else {
yin.addColorStop(0, '#d1d1d1')
yin.addColorStop(1, '#f9f9f9')
}
context.fillStyle = yin
context.fill()
}
canvas.onclick = function (e) {
if (over) {
return
}
if (!me) {
return
}
var x = e.offsetX;
var y = e.offsetY;
i = Math.floor(x / 30);
j = Math.floor(y / 30);
if (chess[i][j] == 0) {
oneStep(i, j, me);
chess[i][j] = 1;
for (var k = 0; k < count; k++) {
if (wins[i][j][k]) {
mywin[k]++
computerwin[k] = 6;
if (mywin[k] == 5) {
window.alert('你赢了');
over = true;
}
}
}
if (!over) {
me = !me;
computerAi()
}
}
}
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 (chess[i][j] == 0) {
for (var k = 0; k < count; k++) {
if (wins[i][j][k]) {
if (mywin[k] == 1) {
myScore[i][j] += 500;
} else if (mywin[k] == 2) {
myScore[i][j] += 600;
} else if (mywin[k] == 3) {
myScore[i][j] += 1000;
} else if (mywin[k] == 4) {
myScore[i][j] += 5000;
}
if (computerwin[k] == 1) {
computerScore[i][j] += 520;
} else if (computerwin[k] == 2) {
computerScore[i][j] += 650 ;
} else if (computerwin[k] == 3) {
computerScore[i][j] +=1200;
} else if (computerwin[k] == 4) {
computerScore[i][j] += 10000;
}
}
}
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;
}
}
}
}
}
oneStep(u,v,false);
chess[u][v]=2;
for (var k = 0; k < count; k++) {
if (wins[u][v][k]) {
computerwin[k]++
mywin[k] = 6;
if (computerwin[k] == 5) {
window.alert('计算机赢了');
over = true;
}
}
}
if (!over) {
me = !me;
}
}
