問題描述

如標題，實時監聽網絡情況，如果沒有網絡情況就會顯示脫機，請問node或者electron是否可以做到？求教

問題解答

試試navigator.onLine，不需要node.js不需要electron，普通網頁都能判斷是否有網絡

官方文檔：http://electron.atom.io/docs/...

function isOnline(user_callback){ /** * Show a warning to the user. * You can retry in the dialog until a internet connection * is active. */ var message = function(){const {dialog} = require(’electron’).remote;return dialog.showMessageBox({ title:'There’s no internet', message:'No internet available, do you want to try again?', type:’warning’, buttons:['Try again please','I don’t want to work anyway'], defaultId: 0},function(index){ // if clicked 'Try again please' if(index == 0){execute(); }}) }; var execute = function(){if(navigator.onLine){ // Execute action if internet available. user_callback();}else{ // Show warning to user // And 'retry' to connect message();} }; // Verify for first time execute();}// Use it, the alert('Hello world'); will be executed only if there’s an active internet connection.isOnline(function(){ alert('Hello world !');});

you can check out this blog for details.

監聽navigator.onLine可以實現，感謝兩位的幫助

window.addEventListener('offline', function(e) { alert('offline')})window.addEventListener('online', function(e) { alert('online')})