puppeteer/examples/unrandomize.js

34 lines
1.1 KiB
JavaScript
Raw Normal View History

/**
* Copyright 2017 Google Inc. 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 => {
await page.evaluateOnInitialized(function() {
Math.random = () => 42 / 100;
});
var result = await page.navigate('http://ariya.github.com/js/random/');
if (result) {
console.log(await page.evaluate(function () {
return document.getElementById('numbers').textContent;
}));
} else {
console.log('Network error.');
}
browser.close();
});