ActionChains方法列表
click(on_element=None) ——单击鼠标左键
click_and_hold(on_element=None) ——点击鼠标左键，不松开
context_click(on_element=None) ——点击鼠标右键
double_click(on_element=None) ——双击鼠标左键
drag_and_drop(source, target) ——拖拽到某个元素然后松开
drag_and_drop_by_offset(source, xoffset, yoffset) ——拖拽到某个坐标然后松开
key_down(value, element=None) ——按下某个键盘上的键
key_up(value, element=None) ——松开某个键
move_by_offset(xoffset, yoffset) ——鼠标从当前位置移动到某个坐标
move_to_element(to_element) ——鼠标移动到某个元素
move_to_element_with_offset(to_element, xoffset, yoffset) ——移动到距某个元素（左上角坐标）多少距离的位置
perform() ——执行链中的所有动作
release(on_element=None) ——在某个元素位置松开鼠标左键
send_keys(*keys_to_send) ——发送某个键到当前焦点的元素
send_keys_to_element(element, *keys_to_send) ——发送某个键到指定元素
class ActionChains(driver)
driver:The WebDriver instance which performs user actions.
Generate user actions. All actions are stored in the ActionChains object. Call perform() to fire stored actions.
– perform()
Performs all stored actions.
– click(on_element=None)
Clicks an element.
on_element:The element to click. If None, clicks on current mouse position.
– click_and_hold(on_element)
Holds down the left mouse button on an element.
on_element:The element to mouse down. If None, clicks on current mouse position.
– context_click(on_element)
Performs a context-click (right click) on an element.
on_element:The element to context-click. If None, clicks on current mouse position.
– double_click(on_element)
Double-clicks an element.
on_element:The element to double-click. If None, clicks on current mouse position.
– drag_and_drop(source, target)
Holds down the left mouse button on the source element, then moves to the target element and releases the mouse button.
source:The element to mouse down.
target: The element to mouse up.
– key_down(key, element=None)
Sends a key press only, without releasing it. Should only be used with modifier keys (Control, Alt andShift).
key:The modifier key to send. Values are defined in Keys class.
element:The element to send keys. If None, sends a key to current focused element.
– key_up(key, element=None)
Releases a modifier key.
key:The modifier key to send. Values are defined in Keys class.
element:The element to send keys. If None, sends a key to current focused element.
– move_by_offset(xoffset, yoffset)
Moving the mouse to an offset from current mouse position.
xoffset:X offset to move to.yoffset:Y offset to move to.
– move_to_element(to_element)
Moving the mouse to the middle of an element.
to_element: The element to move to.
– move_to_element_with_offset(to_element, xoffset, yoffset)
Move the mouse by an offset of the specificed element. Offsets are relative to the top-left corner of the
element.
to_element: The element to move to.xoffset:X offset to move to.yoffset:Y offset to move to.
– release(on_element)
Releasing a held mouse button.
on_element:The element to mouse up.
– send_keys(*keys_to_send)
Sends keys to current focused element.
keys_to_send:The keys to send.
– send_keys_to_element(self, element,*keys_to_send):
Sends keys to an element.
element:The element to send keys.keys_to_send:The keys to send.
