Question

async function getChampionID(randomChampionID) {
    let response = await fetch('http://ddragon.leagueoflegends.com/cdn/11.10.1/data/en_US/champion.json');
    let body = await response.json();
    var championData = Object.keys(body.data)
    var randomChampionKey = Math.floor(Math.random() * (154 - 0 + 1) + 0)
    return randomChampionID = championData[randomChampionKey]
}

async function getChampionName(randomChampionName) {
    let result = await getChampionID();
    let response = await fetch(`http://ddragon.leagueoflegends.com/cdn/11.10.1/data/en_US/champion/${result}.json`)
    let body = await response.json();
    return randomChampionName = body.data[result].name
}


var randomChampion = document.getElementById('random-champion')
var bgimg = document.getElementById('background-image')
var championSquare = document.getElementById('square')

randomChampion.addEventListener("click", async () =>
{
    let championID = await getChampionID()
    let championName = await getChampionName()
    bgimg.style.backgroundImage = `url('http://ddragon.leagueoflegends.com/cdn/img/champion/splash/${championID}_0.jpg')`
    championSquare.src=`http://ddragon.leagueoflegends.com/cdn/11.11.1/img/champion/${championID}.png`
    console.log(championID)
    console.log(championName)
})

getChampionName() 函数从 getChampionID 中获取一个随机值，因此每当我通过按钮事件侦听器调用它们时，getChampionID() 都会生成一个随机 ID（#1）， getChampionName() 再次从 getChampionID() 获取另一个值，导致不同的 ID (#2)，但我需要 getChampionName() 来获取 #1 ID

Answer 1

首先，函数没有被传递参数，因此在定义时不需要括号内的任何内容。

其次，在事件侦听器中，我会简单地调用一个名为 getChampion 的函数，该函数获取一个随机 ID，然后获取详细信息，并返回冠军详细信息和 ID 以进一步用作对象。< /p>

我的代码看起来像这样。

async function getChampionID() {
    let response = await fetch('http://ddragon.leagueoflegends.com/cdn/11.10.1/data/en_US/champion.json');
    let body = await response.json();
    var championData = Object.keys(body.data)
    var randomChampionKey = Math.floor(Math.random() * (154 - 0 + 1) + 0)
    return championData[randomChampionKey]
}

async function getChampion() {
    let result = await getChampionID();
    let response = await fetch(`http://ddragon.leagueoflegends.com/cdn/11.10.1/data/en_US/champion/${result}.json`)
    let body = await response.json();
    return { name: body.data[result].name, id: result }
}


var randomChampion = document.getElementById('random-champion')
var bgimg = document.getElementById('background-image')
var championSquare = document.getElementById('square')

randomChampion.addEventListener("click", async () =>
{
    let champion = await getChampion()
    bgimg.style.backgroundImage = `url('http://ddragon.leagueoflegends.com/cdn/img/champion/splash/${champion.id}_0.jpg')`
    championSquare.src=`http://ddragon.leagueoflegends.com/cdn/11.11.1/img/champion/${champion.id}.png`
    console.log(champion.id)
    console.log(champion.name)
})

将值/变量传递给异步函数

1 个答案: