在进行下拉选择后返回javascript中过滤的API数据？

该项目的目标是选择一个州（硬编码），选择您感兴趣的活动，并根据所选信息呈现国家公园图像和名称。我被困在下一步做什么来渲染过滤后的国家公园。我是要添加到现有的fetch（）中，还是创建一个单独的fetch？我目前有一个警报设置，当我们点击按钮时，只是为了看到它正在抓取状态和活动。我会用函数替换它吗

// Assign API URL to a constant
const url = 'https://developer.nps.gov/api/v1/parks?&api_key=wSlcKl1LSOpHXf164FTShbQZC4cmu1VWTJiipnFk&limit=500'

// Activities Dropdown
const acsDrop = document.getElementById('activities-dropdown')
acsDrop.length = 0

const acsDropDefault = document.createElement('option')
acsDropDefault.text = 'How do you wander?'

acsDrop.add(acsDropDefault)
acsDrop.selectedIndex = 0

// Fetch API and Render Activities
fetch(url)  
  .then(res => res.json().then(parks => {  
    let option
    for (let i = 0; i < parks.data.length; i++) {
        for (let j = 0; j < parks.data.length; j++) {
            option = document.createElement('option')
            option.text = parks.data[i].activities[j].name
            option.value = parks.data[i].activities[j].name
            acsDrop.add(option)
        }
    }    
  })
)  
// Catch Block
.catch(err => {  
    console.error('Fetch Error', err)
    })


// Click Event Listener and Activities Selected
const wanderBtn = document.getElementById('submit')

const letsWander = wanderBtn.addEventListener('click', () => {
    const selectedState = document.getElementById('states-dropdown')
    const checkedActivity = document.querySelectorAll('#activities-dropdown :checked')
    const selected = [...checkedActivity, selectedState].map(option => option.value)
    alert(selected)
})

---

你的JSON只是一个公园。当他们选择一个活动时，您不清楚要显示什么。@Barmar抱歉，我只是举了一个JSON的例子，而不是复制所有数据。当他们选择状态和活动时，我试图显示以下内容：image，fullname是这些对象数组的实际JSON？将

parks

分配给全局变量。然后，当他们从菜单中选择某些内容时，您可以在变量中搜索要显示的信息。@barmar是的

<div>
    <select id="states-dropdown" name="states">
      <option selected disabled>Where will you wander?</option>
      <option value="AL">Alabama</option>
      <option value="AK">Alaska</option>
      <option value="AZ">Arizona</option>
      <option value="AR">Arkansas</option>
      <option value="CA">California</option>
      <option value="CO">Colorado</option>
      <option value="CT">Connecticut</option>
      <option value="DE">Delaware</option>
      <option value="DC">District Of Columbia</option>
      <option value="FL">Florida</option>
      <option value="GA">Georgia</option>
      <option value="HI">Hawaii</option>
      <option value="ID">Idaho</option>
      <option value="IL">Illinois</option>
      <option value="IN">Indiana</option>
      <option value="IA">Iowa</option>
      <option value="KS">Kansas</option>
      <option value="KY">Kentucky</option>
      <option value="LA">Louisiana</option>
      <option value="ME">Maine</option>
      <option value="MD">Maryland</option>
      <option value="MA">Massachusetts</option>
      <option value="MI">Michigan</option>
      <option value="MN">Minnesota</option>
      <option value="MS">Mississippi</option>
      <option value="MO">Missouri</option>
      <option value="MT">Montana</option>
      <option value="NE">Nebraska</option>
      <option value="NV">Nevada</option>
      <option value="NH">New Hampshire</option>
      <option value="NJ">New Jersey</option>
      <option value="NM">New Mexico</option>
      <option value="NY">New York</option>
      <option value="NC">North Carolina</option>
      <option value="ND">North Dakota</option>
      <option value="OH">Ohio</option>
      <option value="OK">Oklahoma</option>
      <option value="OR">Oregon</option>
      <option value="PA">Pennsylvania</option>
      <option value="RI">Rhode Island</option>
      <option value="SC">South Carolina</option>
      <option value="SD">South Dakota</option>
      <option value="TN">Tennessee</option>
      <option value="TX">Texas</option>
      <option value="UT">Utah</option>
      <option value="VT">Vermont</option>
      <option value="VA">Virginia</option>
      <option value="WA">Washington</option>
      <option value="WV">West Virginia</option>
      <option value="WI">Wisconsin</option>
      <option value="WY">Wyoming</option>    
    </select>
    <select id="activities-dropdown" name="activities" multiple="multiple"> 
    </select>       
    <button id="submit">Let's Wander!</button>
    </div>
    <div id="park-results">

    </div>

{
    "id": "77E0D7F0-1942-494A-ACE2-9004D2BDC59E",
    "url": "https://www.nps.gov/abli/index.htm",
    "fullName": "Abraham Lincoln Birthplace National Historical Park",
    "parkCode": "abli",
    "description": "For over a century people from around the world have come to rural Central Kentucky to honor the humble beginnings of our 16th president, Abraham Lincoln. His early life on Kentucky's frontier shaped his character and prepared him to lead the nation through Civil War. The country's first memorial to Lincoln, built with donations from young and old, enshrines the symbolic birthplace cabin.",
    "latitude": "37.5858662",
    "longitude": "-85.67330523",
    "latLong": "lat:37.5858662, long:-85.67330523",
    "activities": [{
        "id": "13A57703-BB1A-41A2-94B8-53B692EB7238",
        "name": "Astronomy"
    }, {
        "id": "D37A0003-8317-4F04-8FB0-4CF0A272E195",
        "name": "Stargazing"
    }, {
        "id": "1DFACD97-1B9C-4F5A-80F2-05593604799E",
        "name": "Food"
    }, {
        "id": "C6D3230A-2CEA-4AFE-BFF3-DC1E2C2C4BB4",
        "name": "Picnicking"
    }, {
        "id": "DF4A35E0-7983-4A3E-BC47-F37B872B0F25",
        "name": "Junior Ranger Program"
    }, {
        "id": "0B685688-3405-4E2A-ABBA-E3069492EC50",
        "name": "Wildlife Watching"
    }, {
        "id": "5A2C91D1-50EC-4B24-8BED-A2E11A1892DF",
        "name": "Birdwatching"
    }, {
        "id": "24380E3F-AD9D-4E38-BF13-C8EEB21893E7",
        "name": "Shopping"
    }, {
        "id": "467DC8B8-0B7D-436D-A026-80A22358F615",
        "name": "Bookstore and Park Store"
    }, {
        "id": "43800AD1-D439-40F3-AAB3-9FB651FE45BB",
        "name": "Gift Shop and Souvenirs"
    }],
    "topics": [{
        "id": "D10852A3-443C-4743-A5FA-6DD6D2A054B3",
        "name": "Birthplace"
    }, {
        "id": "F669BC40-BDC4-41C0-9ACE-B2CD25373045",
        "name": "Presidents"
    }, {
        "id": "0D00073E-18C3-46E5-8727-2F87B112DDC6",
        "name": "Animals"
    }, {
        "id": "957EF2BD-AC6C-4B7B-BD9A-87593ADC6691",
        "name": "Birds"
    }, {
        "id": "E25F3456-43ED-45DD-93BC-057F9B944F7A",
        "name": "Caves, Caverns and Karst"
    }, {
        "id": "F0F97E32-2F29-41B4-AF98-9FBE8DAB36B1",
        "name": "Geology"
    }, {
        "id": "4BE01DC5-52E6-4F18-8C9A-B22D65965F6D",
        "name": "Groundwater"
    }, {
        "id": "0E1A04CC-EB51-4F18-93D4-EC0B0B4EC1E3",
        "name": "Freshwater Springs"
    }, {
        "id": "A7359FC4-DAD8-45F5-AF15-7FF62F816ED3",
        "name": "Night Sky"
    }],
    "states": "KY",
    "contacts": {
        "phoneNumbers": [{
            "phoneNumber": "2703583137",
            "description": "",
            "extension": "",
            "type": "Voice"
        }, {
            "phoneNumber": "2703583874",
            "description": "",
            "extension": "",
            "type": "Fax"
        }],
        "emailAddresses": [{
            "description": "",
            "emailAddress": "ABLI_Administration@nps.gov"
        }]
    },
    "entranceFees": [{
        "cost": "0.00",
        "description": "There is no fee associated with visiting either unit of the park.",
        "title": "Fee Free Park"
    }],
    "entrancePasses": [],
    "fees": [],
    "directionsInfo": "The Birthplace Unit of the park is located approximately 2 miles south of the town of Hodgenville on U.S. Highway 31E South. The Boyhood Home Unit at Knob Creek is located approximately 10 miles northeast of the Birthplace Unit of the park.",
    "directionsUrl": "http://www.nps.gov/abli/planyourvisit/directions.htm",
    "operatingHours": [{
        "exceptions": [{
            "exceptionHours": {},
            "startDate": "2022-01-01",
            "name": "Park is Closed",
            "endDate": "2022-01-01"
        }, {
            "exceptionHours": {},
            "startDate": "2021-11-25",
            "name": "Park is Closed",
            "endDate": "2021-11-25"
        }, {
            "exceptionHours": {},
            "startDate": "2021-12-25",
            "name": "Park is Closed",
            "endDate": "2021-12-25"
        }],
        "description": "The Memorial Building is open 9:00 am - 4:30 pm eastern time with a limited viewing area.  The Visitor Center and grounds of the Birthplace Unit are open 9:00 am - 5:00 pm eastern time with one-way traffic flow and social distancing.\n\n\nThe Boyhood Home Unit at Knob Creek will be closed August 3, 2020, to July 31, 2021, due to the Lincoln Tavern Rehabilitation Project.",
        "standardHours": {
            "wednesday": "9:00AM - 5:00PM",
            "monday": "9:00AM - 5:00PM",
            "thursday": "9:00AM - 5:00PM",
            "sunday": "9:00AM - 5:00PM",
            "tuesday": "9:00AM - 5:00PM",
            "friday": "9:00AM - 5:00PM",
            "saturday": "9:00AM - 5:00PM"
        },
        "name": "Abraham Lincoln Birthplace National Historical Park"
    }],
    "addresses": [{
        "postalCode": "42748",
        "city": "Hodgenville",
        "stateCode": "KY",
        "line1": "2995 Lincoln Farm Road",
        "type": "Physical",
        "line3": "",
        "line2": ""
    }, {
        "postalCode": "42748",
        "city": "Hodgenville",
        "stateCode": "KY",
        "line1": "2995 Lincoln Farm Road",
        "type": "Mailing",
        "line3": "",
        "line2": ""
    }],
    "images": [{
        "credit": "NPS Photo",
        "title": "The Memorial Building with fall colors",
        "altText": "The Memorial Building surrounded by fall colors",
        "caption": "Over 200,000 people a year come to walk up the steps of the Memorial Building to visit the site where Abraham Lincoln was born",
        "url": "https://www.nps.gov/common/uploads/structured_data/3C861078-1DD8-B71B-0B774A242EF6A706.jpg"
    }, {
        "credit": "NPS Photo",
        "title": "The Memorial Building",
        "altText": "The first memorial erected to honor Abraham Lincoln",
        "caption": "The Memorial Building constructed on the traditional site of the birth of Abraham Lincoln.",
        "url": "https://www.nps.gov/common/uploads/structured_data/3C861263-1DD8-B71B-0B71EF9B95F9644F.jpg"
    }, {
        "credit": "NPS Photo",
        "title": "The Symbolic Birth Cabin of Abraham Lincoln",
        "altText": "The symbolic birth cabin on the traditional site of the birth of Abraham Lincoln.",
        "caption": "The symbolic birth cabin of Abraham Lincoln.",
        "url": "https://www.nps.gov/common/uploads/structured_data/3C86137D-1DD8-B71B-0B978BACD7EBAEF1.jpg"
    }, {
        "credit": "NPS Photo",
        "title": "Statue of the Lincoln Family in the Visitor Center",
        "altText": "Statue of the Lincoln family in the park's Visitor Center",
        "caption": "Visitors to the park can view the statue of the Lincoln family.",
        "url": "https://www.nps.gov/common/uploads/structured_data/3C8614D1-1DD8-B71B-0B1AF72CA452B051.jpg"
    }],
    "weatherInfo": "There are four distinct seasons in Central Kentucky. However, temperature and weather conditions can vary widely within those seasons. Spring and Fall are generally pleasant with frequent rain showers. Summer is usually hot and humid. Winter is moderately cold with mixed precipitation.",
    "name": "Abraham Lincoln Birthplace",
    "designation": "National Historical Park"
}