断网检测
/*** 檢測斷網*/
let EventUtil = {addHandler: (element, type, handler) => {if (element.addEventListener) {element.addEventListener(type, handler, false);} else if (element.attachEvent) {element.attachEvent('on' + type, handler);} else {element['on' + type] = handler;}}
};
EventUtil.addHandler(window, 'online', () => {alert('網絡連接已恢復');
});
EventUtil.addHandler(window, 'offline', () => {alert('請確認網絡是否連通,否則會造成當前工作丟失');
});
?
總結
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