window.addEventListener('online'
时间: 2023-12-05 17:32:21 浏览: 32
window.addEventListener('online'是一个JavaScript事件监听器,用于检测设备是否连接到网络。当设备从离线状态变为在线状态时,该事件将被触发。在给定的代码块中,当监听到online事件时,会将this.wifiFlg的值设置为false,表示设备已连接到网络。这样就可以根据设备的网络状态来进行相应的处理。
相关问题
windows.addeventlistener('online',function(){})
As an AI language model, I don't have access to the Windows API or browser environment to confirm the syntax of the code snippet you provided. However, based on my knowledge of JavaScript, the code seems to be adding an event listener to the "online" event of the Window object. When the device goes online, the function inside the curly braces will be executed.
vue3创建销毁window.removeEventListene
if (mBatteryManager.isBatterySupported()) {
pluggedBatteryController = (plugged || invalidCharger)
&& !wire在 Vue 3 中,你可以使用 `onMounted` 和 `onUnmounted` 钩子来监听组件的挂载和lessCharge && !dockBattery;
} else {
pluggedBatteryController = false;
}
// Update battery led
update销毁事件。在 `onMounted` 钩子中,你可以添加事件监听器,而在 `onUnmounted` 钩子LedStatus(plugged, levelLow, false /* ledBypass */);
if ((pluggedChanged && !mScreenOn) || battery中,你可以移除事件监听器。
例如,你可以创建一个组件,监听 `window` 对象的 `resize`StatusChanged
|| batteryHealthChanged || batteryPresentChanged
|| batteryLevelChanged || invalidChargerChanged
|| batteryStatus 事件,并在组件销毁时移除事件监听器:
```html
<template>
<div>My Component</divUnknown || plugTypeUnknown
|| batteryLevelCritical) {
final ArrayList<IBatteryPropertiesListener> list =
mBatteryPropertiesListeners.getList();
final int N = list.size();
for (int i = 0; i < N; i++) {
>
</template>
<script>
import { onMounted, onUnmounted } from 'vue';
export default {
mounted() {
const handle try {
BatteryProperties prop = new BatteryProperties();
prop.chargerAcOnline = chargerAcOnline;
prop.chargerUsbResize = () => {
console.log('Window resized!');
};
onMounted(() => {
window.addEventListener('resize', handleResize);
Online = chargerUsbOnline;
prop.chargerWirelessOnline = chargerWirelessOnline;
prop.maxChargingCurrent = max });
onUnmounted(() => {
window.removeEventListener('resize', handleResize);
});
},
};
</script>
```
在ChargingCurrentLevel;
prop.maxChargingVoltage = maxChargingVoltage;
prop.batteryStatus = mBatteryStatus;
这个例子中,我们使用 `onMounted` 钩子添加了一个名为 `handleResize` 的事件监听器,它 prop.batteryHealth = mBatteryHealth;
prop.batteryPresent = mBatteryPresent;
prop.batteryLevel = mBatteryLevel被绑定到 `window` 对象的 `resize` 事件上。然后,在 `onUnmounted` 钩子中,;
prop.batteryVoltage = mBatteryVoltage;
prop.batteryTemperature = mBatteryTemperature;
list.get(i).batteryProperties我们移除了这个事件监听器,以避免内存泄漏。