我正在尝试在我的网站上使用Google地图。我决定创建类“map”,所以我可以使用类方法和对象。
问题是:我希望类构造函数知道此类的每个实例都自动成为Google地图。 所以当我打电话时:
map = new map(location);
我会得到一张Google地图,“this”会引用该地图。这是我的构造函数:
map.prototype = new Element();
map.prototype.constructor = map;
function map (place) {
this.dom = document.createElement('div');
document.body.appendChild(this.dom);
// here I am trying to set "this" to the google map
// option 1: obviously wrong
// this = new google.maps.Map(this.dom, {zoom: 9, center: place.location});
// option 2: overwrites dom, but I want dom to be the div
// this.dom = new google.maps.Map(this.dom, {zoom: 9, center: place.location});
//option 3: this works, I don't want to have this extra sub-step using this."map".something...
this.map = new google.maps.Map(this.dom, {zoom: 9, center: place.location});
// call other functions, etc...
};
有没有办法做得更好?无需创建另一个对象属性并将地图放入其中?
答案 0 :(得分:0)
您可以使用新的Class语法使其更具可读性:
class Map extends google.maps.Map {
constructor(){
super(document.body.appendChild(document.createElement('div')), {zoom: 9, center: place.location});
}
customMethod(){
this.whatever();
}
}