node-horseman | Run PhantomJS from Node | Runtime Evironment library
kandi X-RAY | node-horseman Summary
kandi X-RAY | node-horseman Summary
Run PhantomJS from Node
Support
Quality
Security
License
Reuse
Top functions reviewed by kandi - BETA
- Setup page creation
- Setup handler for the page
- Wait for a page
- Evaluate a page
- Crops the given area in the page .
- Prepare Phantomman wrapper .
- Scrape the next page
- Computes modifiers .
- Get the links
- callback when done
node-horseman Key Features
node-horseman Examples and Code Snippets
Community Discussions
Trending Discussions on node-horseman
QUESTION
I have a component that makes use of node-horseman
to log-in in Google and manipulate the UI of Google Alerts, creating a RSS Feed. In my project I check if the user has cookies.txt
file generated by the module, to check if it should log-in on Google or already be allowed to create a RSS Feed.
My component responsible for rendering the forms:
...ANSWER
Answered 2017-Feb-03 at 08:48You have two isssues:
(1) You're not invoking that hasCookies
function, so are not evaluating against its return value, rather it's type (of function which will evaluate to true
)
(2)hasCookies
is most likely being returned as a string
'false' or 'true' rather than a Boolean literal of true
or false
.
When javascript does a comparison with non boolean literals it will do a conversion from the data type into boolean type.
The following values are converted to false:
- null;
- NaN;
- 0;
- empty string (""); < -- this one applies to you here
- undefined.
So when you expect "false" to evaluate to false
in a ternary expression, it actually resolves to true.
Solution:
QUESTION
I am trying to install the dependency ursa
package. But I get this error:
ANSWER
Answered 2017-Oct-30 at 19:59The workaround for this issue is to set the below as environment variable,
NODE_TLS_REJECT_UNAUTHORIZED=0
Thanks.
QUESTION
So I am trying to write a script in javascript using horseman.js that will pull all html from each link stored in an array of urls
the basic idea is what follows and logs one url's html just fine
...ANSWER
Answered 2017-Oct-25 at 02:19I don't know this Horseman API but because it uses .then()
function I assume it's a Promise.
try to do this,
QUESTION
I am trying to do do a web-crawler with node-horseman, that make easier do work with phantomJS. But I am stuck at one point.
Apparently, i can't run for loops inside .evaluate, is it right?The gist with my code:
https://gist.github.com/matheus-rossi/bc4c688264be072ded4ff7ee3f933bc2.js
As you can see, if i run exactly the same code in the browser, everything works fine, like in this image:
Code running OK in the browser
But if i run the code in node-horseman, i get this:
...ANSWER
Answered 2017-Oct-02 at 01:58The thing you are missing is that phantom.js is running javascript in a different environment than node. Like many browsers, not all of the nice es6 language features are available in this environment (yet).
If I run your code , I get errors from phantom.js with the use of let
. Changing those to var
makes your code work for me.
Also, it's a good idea to add .catch()
after the promise, because then you'll get better errors, which may have been useful in this situation.
QUESTION
I'm using node-horseman
to web scrape. The situation is that after each action i make the headless browser take, i generally want to see the results.
The results can be seen by running
...ANSWER
Answered 2017-Jun-24 at 03:50I'm not sure how to do it with pure promises (which I will designate as the "accepted answer" when someone finds a solution) but...
node-horseman
comes with the following functionality to create custom horseman promises
QUESTION
The node-horseman works perfectly on my local server, but when I put it on azure it does not work. Node-horseman is a headless-browser module for node.js. I think the azure is blocking access from external links, but how could I unlock this?
...ANSWER
Answered 2017-Jun-18 at 23:21If you're hosted on Azure App Service, be aware of this wiki here - https://github.com/projectkudu/kudu/wiki/Azure-Web-App-sandbox#unsupported-frameworks
Other scenarios that are not supported:
PhantomJS/Selenium: tries to connect to local address, and also uses GDI+.
Deploy your application to Cloud Services or a VM instead. App Service on Linux should also work if you bring your own container (with PhantomJS and all dependencies).
QUESTION
I need help with a problem I'm facing, and am sure node-horseman can handle it.
I'm trying to accept a "window.confirm" alert and tried many things without success. Basically, after clicking on a button, I want to be able to "accept" the confirm message using horseman.
Going through the docs, I found this:
....at(event, callback) Respond to page events with the callback.
ANSWER
Answered 2017-May-15 at 18:03Reading this answer helped me solve the issue.
Instead of using .at I did the following:
QUESTION
Im trying to run the example code from horsemanjs slightly modified:
...ANSWER
Answered 2017-Mar-13 at 14:24Looks like the error came from an .htpasswd file in the same directory. Once I deleted it everything worked
QUESTION
I'm using node-horseman
to access Google Alerts and perform actions required by the application, but I often see this error of which I find no helpful solution to catch this and interrupt the operation and showing an error message.
ANSWER
Answered 2017-Mar-02 at 09:52To catch it this is enough:
QUESTION
I'm using node-horseman
on a project that creates RSS Alerts on Google Alerts. The user that hasn't connected yet must log-in with his/her Google account through our application, to then be able to retrieve the feed list (s)he has. The application is basically used to auto-post on Facebook Pages news about any RSS feed created.
So far, the login
function is the following:
ANSWER
Answered 2017-Feb-10 at 10:09When working with PhantomJS-like libraries it's very important to get the concept of two main different contexts: one is the context of the script (which you write to automate dealing with a target site) and the other is the context of the target site's page. These contexts to do not intersect, they have different variables and capabilities.
Everything that happens inside of page.evaluate()
, happens in the context of a browser page. You can actually visualise that code as being executed in console of your (Chrome|Firefox|Safari) browser at that site.
You can execute this in console at Google login page
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install node-horseman
Support
Reuse Trending Solutions
Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items
Find more librariesStay Updated
Subscribe to our newsletter for trending solutions and developer bootcamps
Share this Page