无法在函数外返回数组

Question

我有一个函数

function gotData(data){
    result = data.val() 
    const urls = Object.keys(result)
                 .filter(key => result[key].last_res > 5)
                 .map(key => ({url: 's/price/' + result[key].url_site + '/'}))
}
console.log(urls)

但我不能console.log(urls) 将错误显示为

ReferenceError: urls is not defined

如何返回urls？

Answer 1

您的函数 gotData 应该返回网址，

function gotData(data){
    result = data.val() 
    return urls = Object.keys(result)
                 .filter(key => result[key].last_res > 5)
                 .map(key => ({url: 's/price/' + result[key].url_site + '/'}))
}
 console.log(gotData(yourdata));