How to make a tic-tac-toe game using JS
This time I will show you how to use JS to make a Tic-Tac-Toe game, and what are the precautions to use JS to make a Tic-Tac-Toe game. The following is a practical case, let’s take a look.
Recently, a class ended and I needed to make a tic-tac-toe game. I wrote one usingThe situation is as follows:
1. There are only two chess pieces in the same row (row, column, diagonal), and they are all yours. As long as you go further can win, then the remaining position has the highest weight andpriority is the highest. Assign first-level weight.
2. There are only two chess pieces in the same row (row, column, diagonal), and they are both the opponent's (that is, the player's). As long as one step further, the player will succeed, so "I "To block, the remaining position is given a secondary weight. 3. Because the computer side moves backward, if you are smart, you need to block the player side all the time. Therefore, when there is only one chess piece in a row and it is the player's chess piece, then the weights of other positions in the row are set to level three. . 4. Level 4 weight: There are only your own (computer side) chess pieces in a row. 5. Level 5 authority: There are no chess pieces in the same row, including the opponent's and your own. When implemented, the chess pieces in each position can be represented by In order to represent the size of the weight, the regulations are stipulated in the order of level to level 5, add 10000, 1000, 10, 5, 3 Note: Since the source code may be submitted, I have no separation of separation. Create css styles and js files, but it is best to write them separately to be more standardized. If there are any deficiencies, criticisms and corrections are welcome. The source code is as follows:<html>
<head>
<meta charset="utf-8">
<title>井字棋</title>
<script>
//定义全局变量
var full=[[0,0,0],[0,0,0],[0,0,0]];//0表示null，1表示我下的，2表示电脑下的
var val=[[1,1,1],[1,1,1],[1,1,1]];//表示每个位置的权值
function judge(){
//检测是否有人赢
//行
for(var i=0;i<3;i++){
if(full[i][0]==full[i][1]&&full[i][1]==full[i][2]&&full[i][0]!=0){
if(full[i][0]==1){
window.alert("you win!");
return true;
}
else {
window.alert("you lose");
return true;
}
}
}
//列
for(var i=0;i<3;i++){
if(full[0][i]==full[1][i]&&full[1][i]==full[2][i]&&full[0][i]!=0){
if(full[0][i]==1){
window.alert("you win!");
return true;
}
else {
window.alert("you lose");
return true;
}
}
}
//主对角线
if(full[0][0]==full[1][1]&&full[1][1]==full[2][2]&&full[0][0]!=0){
if(full[0][0]==1){
window.alert("you win!");
return true;
}
else {
window.alert("you lose");
return true;
}
}
if(full[0][2]==full[1][1]&&full[2][0]==full[1][1]&&full[0][2]!=0){
if(full[0][2]==1){
window.alert("you win!");
return true;
}
else {
window.alert("you lose");
return true;
}
}
for(var i=0;i<3;i++){
for(var j=0;j<3;j++){
if(full[i][j]==0)
return false;//说明还没结束
if(i==2&&j==2)
{window.alert("平局！");
return true;
}
}
}
return false;//无结果
}
function bn(i,j){
//如果已经下过，则无效
if(full[i][j]!=0){
return 0;
}else{
//没下过
full[i][j]=1;
num1=(i*3+j+1)+"";
document.getElementById(num1).value="X";
if(judge()==true){
return;
}
ai();//切换
}
}
//重置权值：
function resetValue(){
for(var i=0;i<3;i++){
for(var j=0;j<3;j++){
if(full[i][j]!=0)
val[i][j]=0;
else{
//看行和列：
//最高权值
if(((full[0][j]+full[1][j]+full[2][j])==4)&&(full[0][j]*full[1][j]*full[2][j])==0
&&((full[0][j]-1)*(full[1][j]-1)*(full[2][j]-1))==-1)
val[i][j]=val[i][j]+10000;
if(((full[i][0]+full[i][1]+full[i][2])==4)&&(full[i][0]*full[i][1]*full[i][2])==0
&&((full[i][0]-1)*(full[i][1]-1)*(full[i][2]-1))==-1)
val[i][j]=val[i][j]+10000;
//次级权值
if(((full[0][j]+full[1][j]+full[2][j])==2)&&(full[0][j]*full[1][j]*full[2][j])==0
&&((full[0][j]-1)*(full[1][j]-1)*(full[2][j]-1))==0)
val[i][j]=val[i][j]+1000;
if(((full[i][0]+full[i][1]+full[i][2])==2)&&(full[i][0]*full[i][1]*full[i][2])==0
&&((full[i][0]-1)*(full[i][1]-1)*(full[i][2]-1))==0)
val[i][j]=val[i][j]+1000;
//三级权值（一排只有一个X）
if(((full[0][j]+full[1][j]+full[2][j])==1)&&(full[0][j]*full[1][j]*full[2][j])==0
&&((full[0][j]-1)*(full[1][j]-1)*(full[2][j]-1))==0)
val[i][j]=val[i][j]+10;
if(((full[i][0]+full[i][1]+full[i][2])==1)&&(full[i][0]*full[i][1]*full[i][2])==0
&&((full[i][0]-1)*(full[i][1]-1)*(full[i][2]-1))==0)
val[i][j]=val[i][j]+10;
//四级权值（一排只有一个O）
if(((full[0][j]+full[1][j]+full[2][j])==2)&&(full[0][j]*full[1][j]*full[2][j])==0
&&((full[0][j]-1)*(full[1][j]-1)*(full[2][j]-1))==1)
val[i][j]=val[i][j]+5;
if(((full[i][0]+full[i][1]+full[i][2])==2)&&(full[i][0]*full[i][1]*full[i][2])==0
&&((full[i][0]-1)*(full[i][1]-1)*(full[i][2]-1))==1)
val[i][j]=val[i][j]+5;
//五级权限（该行没有X或O）
if(((full[0][j]+full[1][j]+full[2][j])==0)&&(full[0][j]*full[1][j]*full[2][j])==0
&&((full[0][j]-1)*(full[1][j]-1)*(full[2][j]-1))==-1)
val[i][j]=val[i][j]+2;
if(((full[i][0]+full[i][1]+full[i][2])==0)&&(full[i][0]*full[i][1]*full[i][2])==0
&&((full[i][0]-1)*(full[i][1]-1)*(full[i][2]-1))==-1)
val[i][j]=val[i][j]+2;
//主对角线：同上
if((i==0&&j==0)||(i==2&&j==2)||(i==1&&j==1)){
if(((full[0][0]+full[1][1]+full[2][2])==4)&&(full[0][0]*full[1][1]*full[2][2])==0
&&((full[0][0]-1)*(full[1][1]-1)*(full[2][2]-1))==-1)
val[i][j]=val[i][j]+10000;
//次级权值
if(((full[0][0]+full[1][1]+full[2][2])==2)&&(full[0][0]*full[1][1]*full[2][2])==0
&&((full[0][0]-1)*(full[1][1]-1)*(full[2][2]-1))==0)
val[i][j]=val[i][j]+1000;
//三级权值（一排只有一个X）
if(((full[0][0]+full[1][1]+full[2][2])==1)&&(full[0][0]*full[1][1]*full[2][2])==0
&&((full[0][0]-1)*(full[1][1]-1)*(full[2][2]-1))==0)
val[i][j]=val[i][j]+10;
//四级权值（一排只有一个O）
if(((full[0][0]+full[1][1]+full[2][2])==2)&&(full[0][0]*full[1][1]*full[2][2])==0
&&((full[0][0]-1)*(full[1][1]-1)*(full[2][2]-1))==1)
val[i][j]=val[i][j]+5;
//五级权值（该行没有X或O）
if(((full[0][0]+full[1][1]+full[2][2])==0)&&(full[0][0]*full[1][1]*full[2][2])==0
&&((full[0][0]-1)*(full[1][1]-1)*(full[2][2]-1))==-1)
val[i][j]=val[i][j]+2;
}
//副对角线(同上)
if((i==0&&j==2)||(i==2&&j==0)||(i==1&&j==1)){
//一级
if(((full[0][2]+full[1][1]+full[2][0])==4)&&(full[0][2]*full[1][1]*full[2][0])==0
&&((full[0][2]-1)*(full[1][1]-1)*(full[2][0]-1))==-1)
val[i][j]=val[i][j]+10000;
//二级
if(((full[0][2]+full[1][1]+full[2][0])==2)&&(full[0][2]*full[1][1]*full[2][0])==0
&&((full[0][2]-1)*(full[1][1]-1)*(full[2][0]-1))==0)
val[i][j]=val[i][j]+1000;
//三级权值（一排只有一个X）
if(((full[0][2]+full[1][1]+full[2][0])==1)&&(full[0][2]*full[1][1]*full[2][0])==0
&&((full[0][2]-1)*(full[1][1]-1)*(full[2][0]-1))==0)
val[i][j]=val[i][j]+10;
//四级权值（一排只有一个O）
if(((full[0][2]+full[1][1]+full[2][0])==2)&&(full[0][2]*full[1][1]*full[2][0])==0
&&((full[0][2]-1)*(full[1][1]-1)*(full[2][0]-1))==1)
val[i][j]=val[i][j]+5;
//五级权值（该行没有X或O）
if(((full[0][2]+full[1][1]+full[2][0])==0)&&(full[0][2]*full[1][1]*full[2][0])==0
&&((full[0][2]-1)*(full[1][1]-1)*(full[2][0]-1))==-1)
val[i][j]=val[i][j]+2;
}
}
}
}
}
function ai(){
if(judge()==true){
return;
}
//挑选权值最大的
resetValue();
var mi=0,mj=0,temp=0;
for(var i=0;i<3;i++)
for(var j=0;j<3;j++){
if(val[i][j]>temp){
temp=val[i][j];
mi=i;
mj=j;
}
}
full[mi][mj]=2;
num1=(mi*3+mj+1)+"";
document.getElementById(num1).value="O";
if(judge()==true){
return;
}
}
function lose(){
window.alert("you lose");
location.reload();
}
</script>
</head>
<body>
<h1 align=center> 井字棋</h1>
<table border=2px bordercolor="blue"width="300"height="300" style="font-size:50 " align=center>
<tr>
<td><input type="button" id="1" Style="width:100px;height:100px;" value=" " onclick="bn(0,0)"/></td>
<td><input type="button" id="2" Style="width:100px;height:100px;" value=" " onclick="bn(0,1)"/></td>
<td><input type="button" id="3" Style="width:100px;height:100px;" value=" " onclick="bn(0,2)"/></td>
</tr>
<tr>
<td><input type="button" id="4" Style="width:100px;height:100px;" value=" " onclick="bn(1,0)"/></td>
<td><input type="button" id="5" Style="width:100px;height:100px;" value=" " onclick="bn(1,1)"/></td>
<td><input type="button" id="6" Style="width:100px;height:100px;" value=" " onclick="bn(1,2)"/></td>
</tr>
<tr >
<td><input type="button" id="7" Style="width:100px;height:100px;" value=" " onclick="bn(2,0)"/></td>
<td><input type="button" id="8" Style="width:100px;height:100px;" value=" " onclick="bn(2,1)"/></td>
<td><input type="button" id="9" Style="width:100px;height:100px;" value=" " onclick="bn(2,2)"/></td>
</tr>
</table>
<p ><input type="button" style="position:relative;left:500px;top:5px;width:100px;height:50px;" value="重新开始" onclick="location.reload() "/>
<input type="button" style="position:relative;left:550px;top:5px;width:100px;height:50px;" value="认 输" onclick="lose()"/>
</p>
<body>
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