L.Control is a base class for implementing map controls. Handles positioning. All other controls extend from this class.
L.Control是用于实现映射控件的基类。手柄定位。所有其他控件都从该类扩展。
Options
| Option | Type | Default | Description |
|---|---|---|---|
position |
String |
'topright' |
The position of the control (one of the map corners). Possible values are 'topleft', 'topright', 'bottomleft' or 'bottomright'
控件的位置（地图角之一）。可能的值为“topleft”、“topright”、“bottomleft”或“bottomright” |
Methods
Classes extending L.Control will inherit the following methods:
扩展L.Control的类将继承以下方法：
| Method | Returns | Description |
|---|---|---|
getPosition() |
string |
Returns the position of the control.
返回控件的位置。 |
setPosition(<string> position) |
this |
Sets the position of the control.
设置控件的位置。 |
getContainer() |
HTMLElement |
Returns the HTMLElement that contains the control.
返回包含控件的HTMLElement。 |
addTo(<Map> map) |
this |
Adds the control to the given map.
将控件添加到给定的映射。 |
remove() |
this |
Removes the control from the map it is currently active on.
从当前处于活动状态的贴图中删除控件。 |
Extension methods
扩展方法
Every control should extend from
L.Control and (re-)implement the following methods.每项控制都应从L.control扩展，并（重新）实施以下方法。
| Method | Returns | Description |
|---|---|---|
onAdd(<Map> map) |
HTMLElement |
Should return the container DOM element for the control and add listeners on relevant map events. Called on control.addTo(map).
应返回控件的容器DOM元素，并在相关映射事件上添加侦听器。在control.addTo（map）上调用。 |
onRemove(<Map> map) |
|
Optional method. Should contain all clean up code that removes the listeners previously added in onAdd. Called on control.remove().
可选方法。应该包含删除之前在onAdd中添加的侦听器的所有清理代码。对control.remove（）调用。 |