china_map.on("mouseover", on_mouseover)报错AttributeError: 'Map' object has no attribute 'on'怎么改
时间: 2023-12-13 12:06:12 浏览: 35
您需要使用 `add_event_listener` 方法来添加鼠标悬停事件监听器,因为在地图对象中没有 `on` 方法。下面是修改后的代码示例:
```
china_map.add_event_listener('mouseover', on_mouseover)
```
请注意,如果您想要添加其他事件监听器,例如点击事件,请将 `'mouseover'` 替换为您所需的事件名称即可。
相关问题
v-on:mouseover和v-on:mouseout的用法和区别
v-on:mouseover和v-on:mouseout是Vue.js中的事件指令,它们用于在元素上绑定鼠标移入和移出事件的处理函数。
它们的用法如下:
```
<!-- 绑定鼠标移入事件 -->
<div v-on:mouseover="handleMouseOver"></div>
<!-- 绑定鼠标移出事件 -->
<div v-on:mouseout="handleMouseOut"></div>
```
它们的区别在于,`v-on:mouseover`会在鼠标移入元素时触发事件处理函数,而`v-on:mouseout`则会在鼠标移出元素时触发事件处理函数。
需要注意的是,当元素有子元素的时候,鼠标移动到子元素上也会触发`v-on:mouseover`和`v-on:mouseout`事件,因此可以使用`v-on:mouseenter`和`v-on:mouseleave`事件指令来绑定鼠标进入和离开元素的事件处理函数,这两个指令不会冒泡到子元素中。
v-on:mouseover="changeActive($event)" v-on:mouseout="removeActive($event)"
These are Vue.js directives that are used to bind event listeners to HTML elements.
The `v-on:mouseover` directive is used to listen to the `mouseover` event, which is triggered when the mouse pointer enters the element. When this event occurs, the `changeActive` method is called with the `$event` object as its argument. The `$event` object contains information about the event, such as the target element, the position of the mouse pointer, etc.
The `v-on:mouseout` directive is used to listen to the `mouseout` event, which is triggered when the mouse pointer leaves the element. When this event occurs, the `removeActive` method is called with the `$event` object as its argument. This method removes the active class that was added by the `changeActive` method.