yuya-oc/index.html

## index.html
<html>
<body>
  <input type="button" value="Load" onclick="onButtonClick()"></input>
  <webview id="webview0" src="https://example.com" style="display:inline-flex; width:640px; height:480px"></webview>
</body>
<script>
  var handler = function(event, request, authInfo, callback){
    event.preventDefault();
    console.log(event);
    console.log(request);
    console.log(authInfo);
    console.log(callback);
    callback('USER', 'PASSWORD');
  };
  function onButtonClick(){
    var webview = document.getElementById("webview0");
    webview.getWebContents().once('login', handler);
    webview.src = 'http://NEED_AUTH.SAMPLE';
  }
</script>
</html>

## main.js
'use strict';

const electron = require('electron');
const app = electron.app;
const BrowserWindow = electron.BrowserWindow;

var mainWindow;

app.on('ready',()=>{
  mainWindow = new BrowserWindow();
  mainWindow.loadURL('file://'+__dirname+'/index.html');
});
/*
app.on('login',(event, webContents, request, authInfo, callback)=>{
  console.log(callback);
});
*/

## package.json
{
  "name": "webview login test",
  "version": "1.0.0",
  "description": "",
  "main": "main.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC"
}
	<html>
	<body>
	<input type="button" value="Load" onclick="onButtonClick()"></input>
	<webview id="webview0" src="https://example.com" style="display:inline-flex; width:640px; height:480px"></webview>
	</body>
	<script>
	var handler = function(event, request, authInfo, callback){
	event.preventDefault();
	console.log(event);
	console.log(request);
	console.log(authInfo);
	console.log(callback);
	callback('USER', 'PASSWORD');
	};
	function onButtonClick(){
	var webview = document.getElementById("webview0");
	webview.getWebContents().once('login', handler);
	webview.src = 'http://NEED_AUTH.SAMPLE';
	}
	</script>
	</html>
	'use strict';

	const electron = require('electron');
	const app = electron.app;
	const BrowserWindow = electron.BrowserWindow;

	var mainWindow;

	app.on('ready',()=>{
	mainWindow = new BrowserWindow();
	mainWindow.loadURL('file://'+__dirname+'/index.html');
	});
	/*
	app.on('login',(event, webContents, request, authInfo, callback)=>{
	console.log(callback);
	});
	*/
	{
	"name": "webview login test",
	"version": "1.0.0",
	"description": "",
	"main": "main.js",
	"scripts": {
	"test": "echo \"Error: no test specified\" && exit 1"
	},
	"author": "",
	"license": "ISC"
	}