c# - html5 中的地理定位

Question

如何在asp.net中获取当前经纬度。我有这段代码，但它没有返回数据。这不是坠落警报

  <script type='text/javascript' language="javascript">
    function getUserLock() {
        if (navigator.geolocation) {

            navigator.geolocation.getCurrentPosition(displayResult, displayError);
        }
        else {
            setMessage("Geolocation is not supported by this browser");
        }
    }

    function displayResult(position) {         
        setMessage("Latitude: " + position.coords.latitude + ", Longitude: " + position.coords.longitude);
        PageMethods.SendLocation(position.coords.latitude, position.coords.longitude, onComplete, onFailed);
        alert ('test');
    }

    function setMessage(msg) {
        //            document.forms[0].myLoc.value = msg;
    }

    function displayError(error) {
        var errors = { 1: 'Permission denied', 2: 'Position unavailable', 3: 'Request timeout' };
        setMessage("Error occured: " + errors[error.code]);
    }

    function onComplete(args) {
        if (args)
            alert('Log in oldunuz');
        else
            alert('İşlem Başarısız Oldu. Yeniden Deneyiniz...');
    }

    function onFailed(error) {
        alert('Yapılan işlem sırasında aşağıdaki hata(lar) oluştu.\n\r' + error.get_message());
    }

</script>

这是按钮

 <asp:Button ID="LoginButton" runat="server" Text="Log In" ValidationGroup="LoginUserValidationGroup"
                OnClientClick="getUserLock();" OnClick="LoginButton_Click" />

Answer 1

首先是添加超时(默认超时是无限的)这样你就可以得到错误信息

navigator.geolocation.getCurrentPosition(displayResult, displayError,{timeout:10000});