摘要：廢話不多說上代碼完整項目地址項目地址棋盤樣式棋盤元素初始化初始化角色黑旗子白旗是否已分出勝負(fù)走棋記錄當(dāng)前步清空棋子和事件初始化棋盤矩陣刻畫棋盤棋盤網(wǎng)格刻畫棋子每次落子結(jié)束都要判斷輸贏落子如果點擊的是棋子則中斷空的棋位才可落子落

廢話不多說上代碼！
完整項目地址：GitHub項目地址

class Gobang {
            constructor(options) {
                this.options = options
                this.gobang = document.getElementById(options.canvas || "gobang")
                this.chessboard = this.gobang.children[0]
                this.chessmans = this.gobang.children[1]
                // 棋盤樣式
                this.gobangStyle = Object.assign({
                    padding: 30,
                    count: 15
                }, options.gobangStyle || {})
                // 棋盤元素
                this.lattice = {
                    width: (this.gobang.clientWidth - this.gobangStyle.padding * 2) / this.gobangStyle.count,
                    height: (this.gobang.clientHeight - this.gobangStyle.padding * 2) / this.gobangStyle.count
                }
                // 初始化
                this.resetAndInit()
                
            }
            // 初始化
            resetAndInit() {
                const {options} = this
                // 角色 => 1黑旗子 2白旗
                this.role = options.role || this.role || 1
                // 是否已分出勝負(fù)
                this.win = false
                // 走棋記錄
                this.history = []
                // 當(dāng)前步
                this.currentStep = 0
                // 清空棋子和事件
                this.chessmans.onclick = null
                this.chessmans.innerHTML = ""
                // 初始化
                this.drawChessboard()
                this.listenDownChessman()
                this.initChessboardMatrix()
            }
            // 棋盤矩陣
            initChessboardMatrix() {
                const checkerboard = []
                for(let x = 0; x < this.gobangStyle.count + 1; x++) {
                    checkerboard[x] = []
                    for(let y = 0; y < this.gobangStyle.count + 1; y++) {
                        checkerboard[x][y] = 0
                    }
                }
                this.checkerboard = checkerboard
            }
            // 刻畫棋盤
            drawChessboard() {
                const {
                    gobangStyle,
                    gobang
                } = this
                // 棋盤網(wǎng)格
                const lattices = Array.from({
                    length: gobangStyle.count * gobangStyle.count
                }, () => ``).join("")
                this.chessboard.className = `chessboard lattice-${gobangStyle.count}`
                this.chessboard.innerHTML = lattices
                this.gobang.style.border = `${gobangStyle.padding}px solid #ffffd`
            }
            // 刻畫棋子
            drawChessman(x, y, isBlack) {
                const {
                    gobangStyle,
                    lattice,
                    gobang
                } = this
                const newChessman = document.createElement("div")
                newChessman.setAttribute("id", `x${x}-y${y}-r${isBlack ? 1 : 2}`)
                newChessman.className = isBlack ? "chessman black" : "chessman white"
                newChessman.style.width = lattice.width * 0.6
                newChessman.style.height = lattice.height * 0.6
                newChessman.style.left = (x * lattice.width) - lattice.width * 0.3
                newChessman.style.top = (y * lattice.height) - lattice.height * 0.3
                this.chessmans.appendChild(newChessman)
                // 每次落子結(jié)束都要判斷輸贏
                setTimeout(() => {
                    this.checkReferee(x, y, isBlack ? 1 : 2)
                }, 0)
            }
            // 落子
            listenDownChessman(isBlack = false) {
                this.chessmans.onclick = event => {
                    // 如果點擊的是棋子則中斷
                    if(event.target.className.includes("chessman ")) {
                        return false
                    }
                    let {
                        offsetX: x,
                        offsetY: y
                    } = event
                    x = Math.round(x / this.lattice.width)
                    y = Math.round(y / this.lattice.height)
                    // 空的棋位才可落子
                    if(this.checkerboard[x][y] !== undefined &&
                        Object.is(this.checkerboard[x][y], 0)) {
                        // 落子后，更新矩陣，切換角色，并記錄
                        this.checkerboard[x][y] = this.role
                        this.drawChessman(x, y, Object.is(this.role, 1))
                        // 落子完畢后，有可能是悔棋之后落子的，這種情況下就該重置歷史記錄
                        this.history.length = this.currentStep
                        this.history.push({
                            x,
                            y,
                            role: this.role
                        })
                        // 保存坐標(biāo)，角色，快照
                        this.currentStep++
                        this.role = Object.is(this.role, 1) ? 2 : 1
                    }
                }
            }
            // 判斷輸贏
            checkReferee(x, y, role) {
                if((x == undefined) || (y == undefined) || (role == undefined)) return
                // 連殺分?jǐn)?shù)
                let countContinuous = 0
                // 所在矩陣數(shù)據(jù)
                const XContinuous = this.checkerboard.map(x => x[y])
                const YContinuous = this.checkerboard[x]
                const S1Continuous = []
                const S2Continuous = []
                this.checkerboard.forEach((_y, i) => {
                    // 左斜線
                    const S1Item = _y[y - (x - i)]
//                    alert(S1Item)
                    if(S1Item !== undefined) {
                        S1Continuous.push(S1Item)
                    }
                    // 右斜線
                    const S2Item = _y[y + (x - i)]
                    if(S2Item !== undefined) {
                        S2Continuous.push(S2Item)
                    }
                })
                // 當(dāng)前落棋點所在的X軸/Y軸/交叉斜軸，只要有能連起來的5個子的角色即有勝者
                ;
                [XContinuous, YContinuous, S1Continuous, S2Continuous].forEach(axis => {
                    if(axis.some((x, i) => axis[i] !== 0 &&
                            axis[i - 2] === axis[i - 1] &&
                            axis[i - 1] === axis[i] &&
                            axis[i] === axis[i + 1] &&
                            axis[i + 1] === axis[i + 2])) {
                        countContinuous++
                    }
                })
                // 如果贏了，則解綁事件
                if(countContinuous) {
                    this.chessmans.onclick = null
                    this.win = true
                    alert((role == 1 ? "黑" : "白") + "子勝")
                }
            }
            // 悔棋
            regretChess() {
                // 找到最后一次的記錄，回滾UI，更新矩陣
                if(this.history.length && !this.win) {
                    const prev = this.history[this.currentStep - 1]
                    if(prev) {
                        const {
                            x,
                            y,
                            role
                        } = prev
                        const targetChessman = document.getElementById(`x${x}-y${y}-r${role}`)
                        targetChessman.parentNode.removeChild(targetChessman)
                        this.checkerboard[prev.x][prev.y] = 0
                        this.currentStep--
                        this.role = Object.is(this.role, 1) ? 2 : 1
                    }
                }
            }
            // 撤銷悔棋
            revokedRegretChess() {
                const next = this.history[this.currentStep]
                if(next) {
                    this.drawChessman(next.x, next.y, next.role === 1)
                    this.checkerboard[next.x][next.y] = next.role
                    this.currentStep++
                    this.role = Object.is(this.role, 1) ? 2 : 1
                }
            }
        }
        // 實例化游戲
        const gobangGame = new Gobang({
            role: 2,
            canvas: "game",
            gobangStyle: {
                padding: 30,
                count: 16
            }
        })
        console.log(gobangGame)