puppeteer/examples/pagecallback.js
2017-06-21 14:11:52 -07:00

45 lines
1.2 KiB
JavaScript

/**
* Copyright 2017 Google Inc., PhantomJS Authors All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
var Browser = require('../lib/Browser');
var browser = new Browser();
browser.newPage().then(async page => {
page.on('consolemessage', console.log);
await page.setInPageCallback('callPhantom', msg => {
console.log("Page is saying: '" + msg + "'");
return "Hello, page";
});
await page.evaluate(async function() {
// Return-value of the "onCallback" handler arrive here
var callbackResponse = await window.callPhantom("Hello, driver");
console.log("Driver is saying: '" + callbackResponse + "'");
});
browser.close();
});