javascript - 将 JS 文件包含在另一个 JS 文件中

Question

这个问题已经有答案了:

How do I include a JavaScript file in another JavaScript file? (71 个回答)

已关闭 6 年前。

我需要一些帮助。所以，我有一个 js 文件，其中包含 map 主题。我想将它包含到我的另一个js文件中，并调用所有主题以创建选择 map 主题的选项。

这是我的 map 主题代码:

     green_theme: [{
                "featureType": "water",
                "elementType": "geometry",
                "stylers": [{
                    "visibility": "on"
                }, {
                    "color": "#aee2e0"
            }]
        }, {
            "featureType": "landscape",
            "elementType": "geometry.fill",
            "stylers": [{
                "color": "#abce83"
            }]
        }, {
            "featureType": "poi",
            "elementType": "geometry.fill",
            "stylers": [{
                "color": "#769E72"
            }]
        }, {
            "featureType": "poi",
            "elementType": "labels.text.fill",
            "stylers": [{
                "color": "#7B8758"
            }]
        }, {
            "featureType": "poi",
            "elementType": "labels.text.stroke",
            "stylers": [{
                "color": "#EBF4A4"
            }]
        }, {
            "featureType": "poi.park",
            "elementType": "geometry",
            "stylers": [{
                "visibility": "simplified"
            }, {
                "color": "#8dab68"
            }]
        }, {
            "featureType": "road",
            "elementType": "geometry.fill",
            "stylers": [{
                "visibility": "simplified"
            }]
        }, {
            "featureType": "road",
            "elementType": "labels.text.fill",
            "stylers": [{
                "color": "#5B5B3F"
            }]
        }, {
            "featureType": "road",
            "elementType": "labels.text.stroke",
            "stylers": [{
                "color": "#ABCE83"
            }]
        }, {
            "featureType": "road",
            "elementType": "labels.icon",
            "stylers": [{
                "visibility": "off"
            }]
        }, {
            "featureType": "road.local",
            "elementType": "geometry",
            "stylers": [{
                "color": "#A4C67D"
            }]
        }, {
            "featureType": "road.arterial",
            "elementType": "geometry",
            "stylers": [{
                "color": "#9BBF72"
            }]
        }, {
            "featureType": "road.highway",
            "elementType": "geometry",
            "stylers": [{
                "color": "#EBF4A4"
            }]
        }, {
            "featureType": "transit",
            "stylers": [{
                "visibility": "off"
            }]
        }, {
            "featureType": "administrative",
            "elementType": "geometry.stroke",
            "stylers": [{
                "visibility": "on"
            }, {
                "color": "#87ae79"
            }]
        }, {
            "featureType": "administrative",
            "elementType": "geometry.fill",
            "stylers": [{
                "color": "#7f2200"
            }, {
                "visibility": "off"
            }]
        }, {
            "featureType": "administrative",
            "elementType": "labels.text.stroke",
            "stylers": [{
                "color": "#ffffff"
            }, {
                "visibility": "on"
            }, {
                "weight": 4.1
            }]
        }, {
            "featureType": "administrative",
            "elementType": "labels.text.fill",
            "stylers": [{
                "color": "#495421"
            }]
        }, {
            "featureType": "administrative.neighborhood",
            "elementType": "labels",
            "stylers": [{
                "visibility": "off"
            }]
        }],

        black_theme: [{
            "stylers": [{
                "hue": "#ff1a00"
            }, {
                "invert_lightness": true
            }, {
                "saturation": -100
            }, {
                "lightness": 33
            }, {
                "gamma": 0.5
            }]
        }, {
            "featureType": "water",
            "elementType": "geometry",
            "stylers": [{
                "color": "#2D333C"
            }]
        }],

        blue_theme: [{
            "featureType": "landscape.natural",
            "elementType": "geometry.fill",
            "stylers": [{
                "visibility": "on"
            }, {
                "color": "#e0efef"
            }]
        }, {
            "featureType": "poi",
            "elementType": "geometry.fill",
            "stylers": [{
                "visibility": "on"
            }, {
                "hue": "#1900ff"
            }, {
                "color": "#c0e8e8"
            }]
        }, {
            "featureType": "road",
            "elementType": "geometry",
            "stylers": [{
                "lightness": 100
            }, {
                "visibility": "simplified"
            }]
        }, {
            "featureType": "road",
            "elementType": "labels",
            "stylers": [{
                "visibility": "off"
            }]
        }, {
            "featureType": "transit.line",
            "elementType": "geometry",
            "stylers": [{
                "visibility": "on"
            }, {
                "lightness": 700
            }]
        }, {
            "featureType": "water",
            "elementType": "all",
            "stylers": [{
                "color": "#7dcdcd"
            }]
        }],

        retro_theme: [{
            "featureType": "administrative",
            "stylers": [{
                "visibility": "off"
            }]
        }, {
            "featureType": "poi",
            "stylers": [{
                "visibility": "simplified"
            }]
        }, {
            "featureType": "road",
            "elementType": "labels",
            "stylers": [{
                "visibility": "simplified"
            }]
        }, {
            "featureType": "water",
            "stylers": [{
                "visibility": "simplified"
            }]
        }, {
            "featureType": "transit",
            "stylers": [{
                "visibility": "simplified"
            }]
        }, {
            "featureType": "landscape",
            "stylers": [{
                "visibility": "simplified"
            }]
        }, {
            "featureType": "road.highway",
            "stylers": [{
                "visibility": "off"
            }]
        }, {
            "featureType": "road.local",
            "stylers": [{
                "visibility": "on"
            }]
        }, {
            "featureType": "road.highway",
            "elementType": "geometry",
            "stylers": [{
                "visibility": "on"
            }]
        }, {
            "featureType": "water",
            "stylers": [{
                "color": "#84afa3"
            }, {
                "lightness": 52
            }]
        }, {
            "stylers": [{
                "saturation": -17
            }, {
                "gamma": 0.36
            }]
        }, {
            "featureType": "transit.line",
            "elementType": "geometry",
            "stylers": [{
                "color": "#3f518c"
            }]
        }]

这是我的另一个 js 文件的代码:

var options = {
                zoom: 6,
                mapTypeId: google.maps.MapTypeId.ROADMAP,
                //mapTypeId: google.maps.MapTypeId.HYBRID ,
                mapTypeControl: true,
                streetViewControl: true,
            center: new google.maps.LatLng(14.435947810360242, 121.01270109415054),
            zoomControl: true,
            zoomControlOptions: {
                style: google.maps.ZoomControlStyle.SMALL,
                position: google.maps.ControlPosition.RIGHT_BOTTOM
            }
        };

        //refresh map
        var map = new google.maps.Map(document.getElementById('map'), options);

提前致谢!

Answer 1

您不能包含 JS 文件，您可以按照您想要的顺序将它们包含到 HTML 文件中，如下所示:

<head>
    <script type="text/javascript" src="/first_js.js" ></script>
    <script type="text/javascript" src="/second_js.js" ></script>
</head>
<body>
</body>

您还可以使用 jQuery 的获取脚本功能:

$.getScript("second_js.js", function(){

   alert("Script loaded.");

});

或者您可以通过编程方式将任何 JS 包含到 HTML 中，如下所示:

function loadScript(url, callback)
{
    // Adding the script tag to the head as suggested before
    var head = document.getElementsByTagName('head')[0];
    var script = document.createElement('script');
    script.type = 'text/javascript';
    script.src = url;

    // Then bind the event to the callback function.
    // There are several events for cross browser compatibility.
    script.onreadystatechange = callback;
    script.onload = callback;

    // Fire the loading
    head.appendChild(script);
}