- Javascript Selenium Webdriver Tutorial
- Js In Selenium Webdriver
- Call Javascript In Selenium Webdriver
- Selenium Webdriver Example Java
- Selenium Download
Selenium is a browser automation library. Most often used for testingweb-applications, Selenium may be used for any task that requires automatinginteraction with the browser.
Installation
Selenium may be installed via npm with
Jun 07, 2017 Selenium Webdriver Support for MochaJS. In order to perform Javascript testing with Selenium Webdriver and Mocha in a simple way, webdriver facilitates the usage with MochaJS by wrapping around MochaJS test functions (before, beforeEach, it, etc.) with ‘test’ object creating a scope that provide awareness that webdriver is being used. Support Level Definitions. Supported: A selenium-webdriver release will be API compatible with the platform API, without the use of runtime flags. Best effort: Bugs will be investigated as time permits. Selenium WebDriver fits in the same role as RC did, and has incorporated the original 1.x bindings. Java runtime environment 1.6.0 download. It refers to both the language bindings and the implementations of the individual browser controlling code. This is commonly referred to as just 'WebDriver' or sometimes as Selenium 2. JavaScript With Selenium WebDriver. Selenium is one of the most popular automated testing suites. Selenium is designed in a way to support and encourage automation testing of functional aspects of web based applications and a wide range of browsers and platforms.
You will need to download additional components to work with each of the majorbrowsers. The drivers for Chrome, Firefox, and Microsoft's IE and Edge webbrowsers are all standalone executables that should be placed on your systemPATH. Apple's safaridriver is shipped with Safari 10 for OS X El Capitan andmacOS Sierra. You will need to enable Remote Automation in the Develop menu ofSafari 10 before testing.
Browser | Component |
---|---|
Chrome | chromedriver(.exe) |
Internet Explorer | IEDriverServer.exe |
Edge | MicrosoftWebDriver.msi |
Firefox | geckodriver(.exe) |
Safari | safaridriver |
Usage
The sample below and others are included in the
example
directory. You mayalso find the tests for selenium-webdriver informative.Using the Builder API
The
Builder
class is your one-stop shop for configuring new WebDriverinstances. Rather than clutter your code with branches for the various browsers,the builder lets you set all options in one flow. When you callBuilder#build()
, all options irrelevant to the selected browser are dropped:Why would you want to configure options irrelevant to the target browser? The
Builder
's API defines your default configuration. You can change the targetbrowser at runtime through the SELENIUM_BROWSER
environment variable. Forexample, the example/google_search.js
script is configured to run againstFirefox. You can run the example against other browsers just by changing theruntime environmentThe Standalone Selenium Server
The standalone Selenium Server acts as a proxy between your script and thebrowser-specific drivers. The server may be used when running locally, but it'snot recommend as it introduces an extra hop for each request and will slowthings down. The server is required, however, to use a browser on a remote host(most browser drivers, like the IEDriverServer, do not accept remoteconnections).
To use the Selenium Server, you will need to install theJDK anddownload the latest server from Selenium. Once downloaded, run theserver with
You may configure your tests to run against a remote server through the BuilderAPI:
Or change the Builder's configuration at runtime with the
SELENIUM_REMOTE_URL
environment variable:You can experiment with these options using the
example/google_search.js
script provided with selenium-webdriver
.Documentation
API documentation is available online from the Selenium project.Additional resources include
- the #selenium channel on freenode IRC
- the [email protected] list
- SeleniumHQ documentation
Contributing
Contributions are accepted either through GitHub pull requests or patchesvia the Selenium issue tracker. You must sign ourContributor License Agreement before your changes will be accepted.
Node Support Policy
Each version of selenium-webdriver will support the latest semver-minorversion of the LTS and stable Node releases. All semver-major &semver-minor versions between the LTS and stable release will have 'besteffort' support. Following a Selenium release, any semver-minor Node releaseswill also have 'best effort' support. Releases older than the latest LTS,semver-major releases, and all unstable release branches (e.g. 'v.Next')are considered strictly unsupported.
For example, suppose the current LTS and stable releases are v6.9.5 and v7.5.0,respectively. Then a Selenium release would have the following support levels:
Version | Support |
---|---|
<= 6.8 | unsupported |
6.9 | supported |
7.0-4 | best effort |
7.5 | supported |
>= 7.5 | best effort |
v.Next | unsupported |
Support Level Definitions
- supported: A selenium-webdriver release will be API compatible with theplatform API, without the use of runtime flags.
- best effort: Bugs will be investigated as time permits. API compatibility isonly guaranteed where required by a supported release. This effectivelymeans the adoption of new JS features, such as ES2015 modules, will dependon what is supported in Node's LTS.
- unsupported: Bug submissions will be closed as will-not-fix and APIcompatibility is not guaranteed.
Projected Support Schedule
If Node releases a new LTS each October and a new major version every 6months, the support window for selenium-webdriver will be roughly:
Date | LTS | Stable |
---|---|---|
(current) | 8.9 | 9.0 |
2018-04 | 8.x | 10.0 |
2018-10 | 10.x | 11.0 |
2019-04 | 10.x | 12.0 |
2019-10 | 12.x | 13.0 |
Issues
Please report any issues using the Selenium issue tracker. When usingthe issue tracker
- Do include a detailed description of the problem.
- Do include a link to a gist with anyinteresting stack traces/logs (you may also attach these directly to the bugreport).
- Do include a reduced test case. Reporting 'unable to findelement on the page' is not a valid report - there's nothing for us tolook into. Expect your bug report to be closed if you do not provide enoughinformation for us to investigate.
- Do not use the issue tracker to submit basic help requests. All helpinquiries should be directed to the user forum or #selenium IRCchannel.
- Do not post empty 'I see this too' or 'Any updates?' comments. Theseprovide no additional information and clutter the log.
- Do not report regressions on closed bugs as they are not activelymonitored for updates (especially bugs that are >6 months old). Please open anew issue and reference the original bug in your report.
License
Licensed to the Software Freedom Conservancy (SFC) under oneor more contributor license agreements. See the NOTICE filedistributed with this work for additional informationregarding copyright ownership. The SFC licenses this fileto you under the Apache License, Version 2.0 (the'License'); you may not use this file except in compliancewith the License. You may obtain a copy of the License at
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 ANYKIND, either express or implied. See the License for thespecific language governing permissions and limitationsunder the License.
What is JavaScriptExecutor?
JavaScriptExecutor is an Interface that helps to execute JavaScript through Selenium Webdriver. JavaScriptExecutor provides two methods 'executescript' & 'executeAsyncScript' to run javascript on the selected window or current page.
In this tutorial, you will learn -
Why do we need JavaScriptExecutor?
Javascript Selenium Webdriver Tutorial
In Selenium Webdriver, locators like XPath, CSS, etc. are used to identify and perform operations on a web page.
In case, these locators do not work you can use JavaScriptExecutor. You can use JavaScriptExecutor to perform an desired operation on a web element.
Selenium supports javaScriptExecutor. There is no need for an extra plugin or add-on. You just need to import (org.openqa.selenium.JavascriptExecutor) in the script as to use JavaScriptExecutor.
JavaScriptExecutor Methods
- executeAsyncScript
With Asynchronous script, your page renders more quickly. Instead of forcing users to wait for a script to download before the page renders. This function will execute an asynchronous piece of JavaScript in the context of the currently selected frame or window in Selenium. The JS so executed is single-threaded with a various callback function which runs synchronously.
- executeScript
This method executes JavaScript in the context of the currently selected frame or window in Selenium. The script used in this method runs in the body of an anonymous function (a function without a name). We can also pass complicated arguments to it.
The script can return values. Data types returned are
- Boolean
- Long
- String
- List
- WebElement.
The basic syntax for JavascriptExecutor is given below:
Syntax:
- Script – This is the JavaScript that needs to execute.
- Arguments – It is the arguments to the script. It's optional.
Example of executeAsyncScript
Using the executeAsyncScript, helps to improve the performance of your test. It allows writing test more like a normal coding.
The execSync blocks further actions being performed by the Selenium browser but execAsync does not block action. It will send a callback to the server-side Testing suite once the script is done. It means everything inside the script will be executed by the browser and not the server.
Example 1: Performing a sleep in the browser under test.
In this scenario, we will use 'Guru99' demo site to illustrate executeAsyncScript. In this example, you will
- Launch the browser.
- Open site 'http://demo.guru99.com/V4/ '.
- Application waits for 5 sec to perform a further action.
Step 1) Capture the start time before waiting for 5 seconds ( 5000 milliseconds) by using executeAsyncScript() method.
Step 2) Then, use executeAsyncScript() to wait 5 seconds.
Step 3) Then, get the current time.
Js In Selenium Webdriver
Step 4) Subtract (current time – start time) = passed time.
Step 5) Verify the output it should display more than 5000 milliseconds
Output: Successfully displayed the passed time more than 5 seconds(5000 miliseconds) as shown below:
Example of executeScript
For executeScript, we will see three different example one by one.
1) Example: Click a button to login and generate Alert window using JavaScriptExecutor.
In this scenario, we will use 'Guru99' demo site to illustrate JavaScriptExecutor. In this example,
- Launch the web browser
- open the site 'http://demo.guru99.com/V4/ 'and
- login with credentials
- Display alert window on successful login.
Output: When the code is executed successfully. You will observe
- Successful click on login button and the
- Alert window will be displayed (see image below).
2) Example: Capture Scrape Data and Navigate to different pages using JavaScriptExecutor.
Execute the below selenium script. In this example,
- Launch the site
- Fetch the details of the site like URL of the site, title name and domain name of the site.
- Then navigate to a different page.
Output: When above code is executed successfully, it will it will fetch the details of the site and navigate to different page as shown below.
3) Example: Scroll Downusing JavaScriptExecutor.
Execute the below selenium script. In this example,
- Launch the site
- Scroll down by 600 pixel
Call Javascript In Selenium Webdriver
Output: When above code is executed, it will scroll down by 600 pixels (see image below).
Summary:
Selenium Webdriver Example Java
JavaScriptExecutor is used when Selenium Webdriver fails to click on any element due to some issue.
Selenium Download
- JavaScriptExecutor provides two methods 'executescript' & 'executeAsyncScript' to handle.
- Executed the JavaScript using Selenium Webdriver.
- Illustrated how to click on an element through JavaScriptExecutor, if selenium fails to click on element due to some issue.
- Generated the 'Alert' window using JavaScriptExecutor.
- Navigated to the different page using JavaScriptExecutor.
- Scrolled down the window using JavaScriptExecutor.
- Fetched URL, title, and domain name using JavaScriptExecutor.