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javascript - 谷歌地图搜索框功能在模态窗口中不起作用

转载 作者：行者123 更新时间：2023-11-30 08:28:03 25 4
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我在应用程序中使用谷歌地图。场景是，当用户单击文本框时，将出现一个模态窗口，其中谷歌地图必须显示搜索框。请注意它在没有模态的情况下工作正常。但是当我使用 bootstrap modal 时，现在 google map 可以正常显示搜索框但是

1) 搜索框自动完成功能不工作。 (但在没有模态的情况下工作)

2) 当用户取消模型窗口并重新打开它时，SearchBox 会消失并出现 javascript 错误“无法在新的 T6 (places_impl.js:10) 读取 null 的属性‘value’”

下面是我的完整代码。请问有人可以诊断这个问题吗？ 

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="GoogleMap.aspx.cs" Inherits="WingtipToys.GoogleMap" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">    
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no">
    <meta charset="utf-8">
    <title>Places Searchbox</title>

<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">

<!-- jQuery library -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>

<!-- Latest compiled JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>

    <style>
      /* Always set the map height explicitly to define the size of the div
       * element that contains the map. */
      #map {
        height: 100%;
      }
      /* Optional: Makes the sample page fill the window. */
      html, body {
        height: 100%;
        margin: 0;
        padding: 0;
      }
      #description {
        font-family: Roboto;
        font-size: 15px;
        font-weight: 300;
      }

      #infowindow-content .title {
        font-weight: bold;
      }

      #infowindow-content {
        display: none;
      }

      #map #infowindow-content {
        display: inline;
      }

      .pac-card {
        margin: 10px 10px 0 0;
        border-radius: 2px 0 0 2px;
        box-sizing: border-box;
        -moz-box-sizing: border-box;
        outline: none;
        box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
        background-color: #fff;
        font-family: Roboto;
      }

      #pac-container {
        padding-bottom: 12px;
        margin-right: 12px;
      }

      .pac-controls {
        display: inline-block;
        padding: 5px 11px;
      }

      .pac-controls label {
        font-family: Roboto;
        font-size: 13px;
        font-weight: 300;
      }

      #pac-input {
        background-color: #fff;
        font-family: Roboto;
        font-size: 15px;
        font-weight: 300;
        margin-left: 12px;
        padding: 0 11px 0 13px;
        text-overflow: ellipsis;
        width: 400px;
      }

      #pac-input:focus {
        border-color: #4d90fe;
      }

      #title {
        color: #fff;
        background-color: #4d90fe;
        font-size: 25px;
        font-weight: 500;
        padding: 6px 12px;
      }
      #target {
        width: 345px;
      }
    </style>
</head>
<body>

<form id="Form1" runat="server">
    <label>Position</label>
    <div class="input-group firearms-popup footableModel" data-toggle="modal" data-target="#position-model">
        <asp:TextBox ID="Position" runat="server" CssClass="form-control" ></asp:TextBox>
        <div class="input-group-addon">
            <i class="fa fa-location-arrow"></i>
        </div>
    </div>

    <!--  Position model -->
    <div class="modal fade" id="position-model" TabIndex="-1" role="dialog">
        <!-- Model 1 -->
        <div class="modal-dialog firearms-model-width eservices-model-box-data css-fade" role="document">
            <div class="modal-content eservices-model-box-content">
                <div class="modal-header eservices-model-box-header">
                    <div class="col-md-12">
                        <button type="button" class="close eservices-model-box-closed" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button>
                        <h4 class="modal-title eservices-model-box-data-title">SelectPosition</h4>
                    </div>
                </div>
                <div class="modal-body eservices-model-box-body">
                    <div class="row m-zero hide-label map-model">

                    <input id="pac-input" class="controls" type="text" placeholder="Search Box">
                    <!-- <div id="gooleMapCordinates" style="width: 100%; height: 300px;"></div> -->
                    <div id="map" style="width: 100%; height: 300px;"></div>

                        <script>

                            function LoadMap() {
                                var map = new google.maps.Map(document.getElementById('map'), {
                                    zoom: 12,
                                    center: { lat: 25.248158, lng: 55.371863 },
                                    mapTypeId: google.maps.MapTypeId.ROADMAP
                                });

                                google.maps.event.addListener(map, "click", function (event) {
                                    var lat = event.latLng.lat();
                                    var lng = event.latLng.lng();
                                    // populate yor box/field with lat, lng

                                    $("#selectedLocation").text(lat + ";" + lng);
                                });


                                // Create the search box and link it to the UI element.
                                var input = document.getElementById('pac-input');
                                var searchBox = new google.maps.places.SearchBox(input);
                                map.controls[google.maps.ControlPosition.TOP_LEFT].push(input);

                                // Bias the SearchBox results towards current map's viewport.

                                map.addListener('bounds_changed', function () {
                                    searchBox.setBounds(map.getBounds());
                                });

                                var markers = [];
                                // Listen for the event fired when the user selects a prediction and retrieve
                                // more details for that place.
                                searchBox.addListener('places_changed', function () {
                                    var places = searchBox.getPlaces();

                                    if (places.length == 0) {
                                        return;
                                    }

                                    // Clear out the old markers.
                                    markers.forEach(function (marker) {
                                        marker.setMap(null);
                                    });
                                    markers = [];

                                    // For each place, get the icon, name and location.
                                    var bounds = new google.maps.LatLngBounds();
                                    places.forEach(function (place) {
                                        if (!place.geometry) {
                                            console.log("Returned place contains no geometry");
                                            return;
                                        }
                                        var icon = {
                                            url: place.icon,
                                            size: new google.maps.Size(71, 71),
                                            origin: new google.maps.Point(0, 0),
                                            anchor: new google.maps.Point(17, 34),
                                            scaledSize: new google.maps.Size(25, 25)
                                        };

                                        // Create a marker for each place.
                                        markers.push(new google.maps.Marker({
                                            map: map,
                                            icon: icon,
                                            title: place.name,
                                            position: place.geometry.location
                                        }));

                                        if (place.geometry.viewport) {
                                            // Only geocodes have viewport.
                                            bounds.union(place.geometry.viewport);
                                        } else {
                                            bounds.extend(place.geometry.location);
                                        }
                                    });
                                    map.fitBounds(bounds);
                                });

                            }

                            function setCordinates() {
                                var positionTextbox = $("#<%= Position.ClientID %>");
                                positionTextbox.val($("#selectedLocation").text());
                                reValidate(positionTextbox);
                            }

                        </script>
                        <script src='https://maps.googleapis.com/maps/api/js?language="en"&key=MyGoogleKey&libraries=places' async defer>
                        </script>

                    </div>
                </div>
                <div class="modal-footer eservices-model-box-footer">
                    <div class="col-sm-7">
                        <strong id="selectedLocation"></strong>
                    </div>
                    <div class="col-sm-5">
                        <button type="button" class="btn eservices-model-box-data-btn btn-grey" data-dismiss="modal">Cancel</button>
                        <button type="button" class="btn eservices-model-box-data-btn btn-green" data-dismiss="modal" onclick="javascript: setCordinates();">AddPosition</button>
                    </div>
                </div>
            </div>
        </div>
        <!--/ Model 1 -->

    </div>
    <!--/ Position model -->


</form>

<script>
    $(document).ready(function () {
        $("#position-model").on("shown.bs.modal", function () {
            LoadMap();
        });
    });
</script>

</body>
</html>

下面是我们重新打开模态窗口时出现的完整 javascript 错误。

Uncaught TypeError: Cannot read property 'value' of null
    at new T6 (places_impl.js:10)
    at Object.g7.j (places_impl.js:31)
    at ix.<anonymous> (js?language="en"&key=AIzaSyA1lkktOc_Efhalgu55QcoZGXNTxbXxhUg&libraries=places:141)
    at Object._.G (js?language="en"&key=AIzaSyA1lkktOc_Efhalgu55QcoZGXNTxbXxhUg&libraries=places:46)
    at new ix (js?language="en"&key=AIzaSyA1lkktOc_Efhalgu55QcoZGXNTxbXxhUg&libraries=places:141)
    at LoadMap (GoogleMap.aspx:161)
    at HTMLDivElement.<anonymous> (GoogleMap.aspx:255)
    at HTMLDivElement.dispatch (jquery.min.js:3)
    at HTMLDivElement.q.handle (jquery.min.js:3)
    at Object.trigger (jquery.min.js:4)

最佳答案

我所做的是在模式打开时触发 init 函数(这将有助于在不需要时不加载 map )。搜索框自动完成可能正在工作，将 pac-container 类的 z-index 设置为非常高的值。样式属性应该是这样的:

.pac-container { z-index: 100000 !important; }

它会将您的下拉列表置于最前面。

关于javascript - 谷歌地图搜索框功能在模态窗口中不起作用，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/42086782/

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