手写实现冒泡排序,防抖,节流,事件总线(eventBus) 

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    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
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<body>
    <script>
        //冒泡排序
        function bubbleSort(array) {
            if (array && array.length > 0) {
                for (let i = 0; i < array.length - 1; i++) {
                    for (let j = 0; j < array.length - i - 1; j++) {
                        if (array[j] > array[j + 1]) {
                            let temp = array[j];
                            array[j] = array[j + 1];
                            array[j + 1] = temp;
                        }
                    }
                }
            }
        }
        let array = [4, 1, 6, 8, 2, 5, 9];
        bubbleSort(array)

        //防抖
        function debounce(fn, delay) {
            let time = null
            return function (...arg) {
                clearTimeout(time)
                time = setTimeout(() => {
                    fn.apply(this, arg)
                }, delay)
            }
        }

        // 节流
        function throttle(fn, delay) {
            let flag = true
            return function (...args) {
                if (!args) return;
                flag = false;
                setTimeout(() => {
                    fn.apply(this, args)
                    flag = true;
                }, delay);
            }
        }

        class EventBus {
            constructor() {
                this.listeners = {};
            }

            // 订阅事件
            on(event, callback) {
                if (!this.listeners[event]) {
                    this.listeners[event] = [];
                }
                this.listeners[event].push(callback);
            }

            // 触发事件
            emit(event, ...args) {
                if (this.listeners[event]) {
                    this.listeners[event].forEach(callback => callback(...args));
                }
            }

            // 取消订阅事件
            off(event, callback) {
                if (this.listeners[event]) {
                    this.listeners[event] = this.listeners[event].filter(cb => cb !== callback);
                }
            }
        }

        // 使用示例
        const eventBus = new EventBus();

        // 订阅事件
        eventBus.on('userLoggedIn', (user) => {
            console.log(`User logged in: ${user}`);
        });

        // 触发事件
        eventBus.emit('userLoggedIn', 'JohnDoe');
    </script>
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posted @ 2025-06-03 16:30  龙卷风吹毁停车场  阅读(13)  评论(0)    收藏  举报