为什么出现描述性错误
var chessBoard=[];
var me=true;
for(var i=0;i<15;i++){
chessBoard[i]=[];
for(var j=0;j<15;j++)
{
chessBoard[i][j]=0;
}
}
var chess=document.getElementById('chess');
var context=chess.getContext('2d');//平面2d
context.strokeStyle="#BFBFBF";
var logoImag=new Image();
logoImag.src="images/afaf.jpg";
logoImag.onload=function(){
context.drawImage(logoImag,0,0,450,450);
drawChessBoard();
}
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();
}
}
var oneStep=function(i,j,me){
context.beginPath();
context.arc(15+i*30,15+j*30,13,0,2*Math.PI);
context.closePath();
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();
}
chess.onclick=function(e){
var x=e.offsetX;
var y=e.offsetY;
var i=Math.floor(x/30);
var j=Math.floor(y/30);
if(chessBoard[i][j]==0){
oneStep(i,j,me);
if(me){
chessBoard[i][j]=1;
}else{
chessBoard[i[j]=2;
}
me=!me;
else{me=me;}
}
}
{SyntaxError: missing ] in index expression
chessBoard[i[j]=2;}debug调试