延迟加载

使用要加载的库创建 HTML 文件（在此示例中为 libraries/turf.html）：

<script src="../../bower_components/turf/turf.min.js"></script>

需要时导入并使用你的库：

doSomething: function(argument, anotherArgument): {

    // If library has not been loaded, load it
    if(typeof turf == 'undefined') {
        this.importHref(this.resolveUrl('../libraries/turf.js'), function() {
            // Once the library is loaded, recursively call the function
            this.doSomething(argument, anotherArgument);
        }.bind(this));

        return;
    }

    // Example usage of a library method
    var point = turf.point([42.123123, -23.83839]);
}