1、npm install mitt 添加mitt
2、单独开一个eventbus.ts,引入mitt,执行mott库导出的函数获取事件总线对象并暴露;
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3、在A组件中引入eventbus.ts,
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发起事件:
emitter.emit('updateMenu', {to:'/logList', from:'/statisticalReportsList'});
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updateMenu是自定义事件名,后面则为参数携带的参数
4、在B组件中引入eventbus.ts,
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接收事件:
emitter.on('updateMenu', msg => {
console.log('该更新菜单选中项了', msg)
});
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msg是接收的参数。
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