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var index = 0;var zeroCell = new Array();for(var i=0;i<4;i++){for(var j=0;j<4;j++){if(board[i][j]==0){zeroCell[index] = [i,j];index++;}}} var ranCell = parseInt(Math.floor(Math.random()*index));var randx = zeroCell[ranCell][0];var randy = zeroCell[ranCell][1];這里發(fā)個(gè)討論真鬧心格式?jīng)]有、圖片沒(méi)有