如果變量等於False，則通過JavaScript重定向？

Question

香港專業教育學院嘗試過一切，我知道該怎麼做（並不多TBH），所以這裏是代碼，而不試圖重定向：

if (navigator.geolocation) { 
    // Locate position 
    navigator.geolocation.getCurrentPosition(displayPosition); 
    } else { 
    alert('It seems like Geolocation, which is required for this page, is not enabled in your browser. Please use a browser which supports it.'); 
    } 
    blacklisted_areas = { 
    'area 51': [1, 2], 
    'pink unicorn zoo': [1, 2], 
    }; 
    // Success callback function 
    function displayPosition(pos) { 
    var mylat = pos.coords.latitude; 
    var mylong = pos.coords.longitude; 
    var thediv = document.getElementById('locationinfo'); 
    thediv.innerHTML = '<p>Your longitude is :' + mylong + ' and your latitide is ' + mylat + '</p>'; 
    } 
    var blacklisted = false; 
    for (let x of Object.values(blacklisted_areas)) { 
    if (displayPosition()[0] === x[0] && displayPosition()[1] === x[1]) { 
     blacklisted = true; 
    } 
    } 
    //Now right below here is where I need to check for blacklisted's value (if false redirect to a different site) 

請幫助我：（（

Answer 1

if (!blacklisted){ 
    window.location = "URL goes here"; 
} 

此檢查與黑名單相反如果黑名單是假的，那麼條件是真實的，並且發生重定向

編輯：navigator.geolocation是異步的，所以你需要處理你所有的回調邏輯

function displayPosition(pos) { 
    var mylat = pos.coords.latitude; 
    var mylong = pos.coords.longitude; 
    var thediv = document.getElementById('locationinfo'); 
    thediv.innerHTML = '<p>Your longitude is :' + mylong + ' and your latitide is ' + mylat + '</p>'; 

    var blacklisted = false; 
    for (let x of Object.values(blacklisted_areas)) { 
    if (mylat === x[0] && mylong === x[1]) { 
     blacklisted = true; 
    } 
    } 
    if(!blacklisted){ 
    window.location="insertURLHere"; 
    } 
} 

讓我知道是否可行