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request-event

v0.0.3

Published

防抖插件

Downloads

7

Readme

前端请求防抖工具

相对于anti-shake-and-per这个包,移去了没啥用的权限控制

模式

request-event中配置了两个模式:queue与timeout queue: 排队模式,类似与锁机制,当一个请求发出后,只有调用了done函数标记结束,下一个请求才可以发起。 timeout: 倒计时模式,用户多次点击时,只有最后一次有效。与常见的setTimeout防抖机制一直

演示两种模式的使用方式

const queue = new RequestEvent('queue')
const timeout = new RequestEvent('timeout')

// 公共方法,模拟请求事件
const getArticleById = function() {
    return new Promise(function (resolve, reject) { 
        setTimeout(() => {
            resolve({code: '0001', data: []})                      
        }, 1000)     
    })
}

// 定义一个点击事件,演示queue模式
const click = function () {
    // 相对于anti-shake-and-per采用事件驱动模式反映运行状态,request-event采用try catch捕获异常,
    // request函数会返回一个Promise,所以使用catch函数也是可行的
    // 正常情况下你的请求代码没问题,那么抛出的异常只有The request event is running!
    try{
        queue.request(async done => {
            const result = await getArticleById()
            done()
        })
    } catch (e) {
        throw e
    }
}

click() // 此处会成功发出请求
click() // 此处不会发出请求,且抛出异常The request event is running!

// timeout模式
const click1 = function () {
    try{
        timeout.request(async done => {
            const result = await getArticleById()
            done()
        })
    } catch (e) {
        throw e
    }
}

click1()
click1() 
click1()
click1() 
click1()
click1() 
click1()
click1() 
click1()
click1() // 虽然请求多次,但只有这个请求是有效的

其他

虽然request-event的目的是解决请求数据时的点击抖动的情况,但你完全可以用在请求数据之外一切需要避免抖动发送的情况