I'm very new to CasperJS & PhantomJS and after following the quickstart part of the documentation of CasperJS, everytime I open up a terminal to write something like
casperjs sample.js
It gives me the "Unable to open file: sample.js" error. It does work however, if I include the whole path as such
casperjs C:\Users\[Username]\Desktop\sample.js`
Installed Software:
Python v2.7
PhatomJS v1.9.7
CasperJS v1.1-beta3
This is basic commandline usage. You first have to change into the folder where the file you want to use is. Since you "installed" CasperJS, its executable is in the PATH and is found automatically, but sample.js is a regular file which is not in PATH. So you have to either change into the directory that contains the file or use a relative path to the file.
Since you open cmd.exe from start, it will open in the directory C:\Users\[Username]. You have to do:
cd Desktop
casperjs sample.js
or
casperjs Desktop/sample.js
Related
I'm having an issue with Powershell and CMD. When I try to execute Angular CLI commands in CMD like ng --version or ng new projectName, I get this error;
Windows Script Host Error: Invalid character
Code: 800A03F6
Source: Microsoft JScript compilation error
Update:
On Windows .js files are associated to Windows Scripting Host by default, so the script will not be run with Node.
Open a file explorer and find a JavaScript file, open the JavaScript file's properties and then "open with", select the Node.js program file to open that kind of files.
The error should stop after doing this.
This is how I solved it: (on windows 10)
Go to C:\Users\<your_username>\AppData\Roaming\npm\node_modules\#angular\cli\bin
Check for ng.js
Right click on ng.js file and click on "properties" option
You need to open it with node.exe so click on "Change" button go to node js installed directory and
(example: C:\Program Files\nodejs\node.exe)
Select node.exe
Click on OK
It should change the color of ng.js like below:
Now try ng -v and other ng commands
Installing this exact Angular version:
npm -g install #angular/cli#10.3.1
instead of the latest version:
npm -g install #angular/cli
fixed the above error.
I ran into this exact issue after updating to Angular CLI 13. Tried tons of different suggestions from other threads. What is described in the solutions here is essentially what worked for me, but I just want to point out a possible alternative method to applying the fix that doesn't associate all JS files with node.js.
Trying to execute a script from package.json on Windows throws a JScript error
In your windows system environment variables is one variable called PATHEXT. If the value contains .JS;, remove it. Then restart your CMD windows.
make sure you have proper path variable configured as shown below
Go to your system variable settings
path variable snapshot
make sure you have all these mentioned as part of path
C:\Users<userfolder>\AppData\Roaming\npm\node_modules#angular\cli
C:\Users<userfolder>\AppData\Roaming\npm
C:\Program Files\nodejs
make sure you have all these mentioned as part of path C:\Users\AppData\Roaming\npm\node_modules#angular\cli C:\Users\AppData\Roaming\npm C:\Program Files\nodejs
in my case, before npm install -g #angular/cli, the path of my system variable was:
C:\Users\AppData\Roaming\npm\node_modules#angular\cli\bin
I remove \bin and work!!!!!
Remember to fix this for the correct User
Associating .JS files to node.exe is the way to solve this.
BUT after struggling with the same issue, I wanted to add that the file association needs to be done with the same USER that you are working with the Terminal/Shell.
So if you use the Terminal as a Admin, you must login with your Admin Account just to fix the file association.
Cheers
I am trying to run Pharo on my system (Ubuntu 17.10 64bit).I followed the exact procedure as given in the book Pharo By Example.
I Went into the Pharo6.1-64 directory and ran the following command in the terminal
./pharo shared/pharo6.1-64.image
I expected this to open the Pharo window where I can write code but instead saw this error in the Terminal.
./pharo: line32: /home/user/pharo6.1-64/vm/pharo: No such file or directory.
Do I need to download any additional files ?
I downloaded the zip from here and it said just extract and run.
It looks like there is something wrong with the file you downloaded. It does not seem to contain a vm. For now, try the other method mentioned in the book:
wget -O- get.pharo.org/50+vm | bash
Copy the pharo.image and pharo.changes to the directory containing the pharo executable and from terminal run the command
Pharo_executable path_to_Pharo_image
The epydoc documentation says:
The graphical interface can be invoked with the epydocgui command, or with epydoc.pyw in the Scripts subdirectory of the Python installation directory under Windows.
I've tried running the epydoc.pyw file directly, and calling it from command line i.e. >>> python epydoc.pyw and >>> epydoc.pyw, both from the scripts directory in my python directory.
How am I supposed to run epydoc.pyw?
In order to use the gui of epydoc, click double on the file epydoc.pyw which is often located at C:\Python27\Scripts
Regarding your question in the comments: 1) open a normal console, 2) navigate to your Script folder and 3) then call the following e.g. to generate uml diagramm. See commandline documentation
python epydoc.py --pdf --graph=umlclasstree Path/To/package
I know there is a documentation from CasperJS website about how to install CasperJS on Windows, but bear with me these guys only explained for the pros only.
If you are new to all this CasperJS and PhantomJS world, you dont stand a chance to understand not even spending two days trying to search the net for a better explanation.
I am working on a project that requires a screenshot of each website listed on my project website, looking around i found out that PhantomJS would be great for this task (website screenshot).
I downloaded PhantomJS and and pasted its phantomjs.exe file in system32 which is working well when i use cmd.exe to send command.
I even managed to grab screenshot with the phantomjs.exe only. but my problem came when i noticed the the workload could be easier when these two work together (CasperJS and PhantomJS) as i can even be able to reduce the size of the screenshot when using CasperJS.
In fact the only use that i want CasperJS for is the limiting of the shot size but since yesterday i have been trying to figure out how to make CasperJS work on Windows but with no avail.
I have downloaded CasperJS and tried to install it in many ways also trying to follow the documentation but nothing.
I changed the CasperJS folder name from its download name to CasperJS as the documantation suggest but when i check in the cmd trying to call some commands, nothing happens.
Anyway to cut the story shot can anyone help me in simple terms considering that i am a newbie to explain how CasperJS can be installed on window or if possible with PhantomJS only how can i re-size the iamge the the program produces lets say if i want a 960 to 400px.
Poor documentation for windows. http://casperjs.org/installation.html#windows
It starts off assuming you have already installed without telling you how to install.
So here it is if anyone else is confused about this. There is no actual install. It's just extracting zip contents to the right place.
download phantomjs for windows from the phantomjs site (it's a zip with binary inside)
extract the contents to C:\phantomjs
download the casperjs zip file from the casperjs website
extract the contents to C:\casperjs
Now you can add the following to the end your system or user PATH variable
;C:\phantomjs;C:\casperjs\batchbin
restart cmd.exe to pick up the new path variable or logout/login if you are running Console2 or Conemu terminal emulator (they won't pick up new paths by a simple close and re-open)
Now in the docs it says to run it like this
casperjs.bat myscript.js
Actually since both phantomjs.exe and casperjs.bat are now in the system PATH you can leave off the extension like this.
casperjs myscript.js
And when running phantomjs.exe just run
phantomjs
One more thing. It really doesn't matter where you install as long as you add that path to the system PATH. I installed to C:\usr\phantomjs and C:\usr\casperjs.
I itemize below the method that has served my needs on both my personal Windows and Ubuntu work PC. DO note that my method doesn't fiddle with PATH settings but involves a command you could save somewhere & copy and paste as needed:
Step 1: Gather the prerequisites
Download the casperjs and phantomjs versions you want to use
Make a directory to contain the things I want to list
Extract the downloaded phantomjs & copy its executable into the directory of step b
Extract casperjs and rename its folder to casperjs
Copy the renamed casperjs folder to the directory of step b
Create and save a file config.json to the directory of step b
config.json should contain phantomjs configurations as found here: http://phantomjs.org/api/command-line.html
Step 2: Running your script
Whenever you want to work with a file, follow the Step 1 details above
The next step assumes that you are in the directory created in step
b of Step 1 also have a file named first.js
On Windows: phantomjs.exe --config=config.json casperjs/bin/bootstrap.js --casper-path=casperjs --cli first.js
On Ubuntu: ./phantomjs --config=config.json casperjs/bin/bootstrap.js --casper-path=casperjs --cli first.js
Experimental config.js and first.js are listed below:
config.json
{"sslProtocol": "any", "cookiesFile": "biscuit", "maxDiskCacheSize": 1000, "diskCache": true}
first.js
var casper = require('casper').create({
pageSettings: {
loadImages: false,
loadPlugins: true,
userAgent: 'Mozilla/5.0 (Windows; U; Windows NT 5.1; nl; rv:1.9.1.6) Gecko/20091201 Firefox/3.5.6'
}
});
var url = "http://casperjs.org/";
casper.start(url).wait(60 * 1000 * 1, function() {
casper.echo('1 min has passed');
casper.capture('casperjs.png');
casper.exit();
});
casper.run();
Addendum: download and save the details of screenshots.js and run it as
phantomjs.exe --config=config.json casperjs/bin/bootstrap.js --casper-path=casperjs --cli screenshots.js http://phantomjs.org
Run Tests: download & save the details of picturefill-test.js and run it as
phantomjs.exe --config=config.json casperjs/bin/bootstrap.js
--casper-path=casperjs test --cli picturefill-test.js
As of CasperJS 1.1.0-DEV Beta 3 you should use this PATH: C:\casperjs\batchbin even though the documentation found here states you need to use C:\casperjs\bin
The reason to this is because C:\casperjs\batchbin includes a .BAT which C:\casperjs\bin does not include anything except some.js files.
after a 3days work, i managed to get it work the problem was with the path and the installation of phantom. i had made the path to a folder but the installation was pointing to the exe file all i had to do was to put the exe file into a folder phantomjs and that was it thank for your help all.
Many of the other answers are out of date. Since it seems like the correct install process keeps changing all the time, I suspect my answer will be out of date also in a few days, but as of March 19, 2015, this is the answer. The other answers, even highly upvoted ones, do not work, so don't waste your time. Good luck. Casperjs seems quite good.
If you download PhantomJS 2.0 and casperjs 1.1-beta3 zip file and put the batchbin directory in the path and put phantom exe in that same folder, then run casperjs, on Windows 8.1 I get the error "CasperJS needs PhantomJS v1.x".
So, I got the latest casperjs direct from github, which has no batchbin directory, so I put just the C:\casperjs\bin directory in the path instead and this worked (sort of, I mean it seems to work well enough for me - although running casperjs c:\casperjs\tests\selftest.js seems to have a number of failing tests).
So to recap, the bad news is only the very latest bleeding edge casperjs works. The good news is the install is 1,2,3 simple:
Clone latest casperjs from github into c:\casperjs.
Copy phantomjs.exe (ver 2.0) to c:\casperjs\bin
Add c:\casperjs\bin to your windows path
Just in case you're using a notebook with dual graphic cards like I do: choose one of them to prevent issues. This article helped me out:
casperJS not finishing on windows
the casperJS documentation is pretty clear about it but I had no clue what to do until I read the notice above.
Fast forward to 2015... 5-steps win7 howto:
choco: PS me> iex ((new-object net.webclient).DownloadString('https://chocolatey.org/install.ps1'))
git: choco install git -y
phantomjs 2.0: choco install phantomjs -y
casperjs source: git clone https://github.com/n1k0/casperjs -b phantomjs-2
Add the location of casperjs/bin to PATH
Done. You can now casperjs --version and live happily ever after.
Ok guys. So I think this thread needs refreshing for 2018!
So with npm, the effort is reduced significantly. Given that you have npm installed, open terminal and go to your project:
cd your_project_name
Now install casperjs. Use --save-dev, --save, -g or none as needed:
npm install --save-dev casperjs
Now install phantomjs. To do this, you should install phantomjs-prebuilt, because PhantomJS team changed their package name:
npm install --save-dev phantomjs-prebuilt
Run your spec:
casperjs your_spec_name.js
We have an application which is compiled using Rake (on windows). We have a new requirement that one of our clients needs to compile the source code in their own environment using a bat file.
So I need to find a way to execute a rake build without installing anything on the host environment (i.e. everything required to do the build needs to be in the source directory, ruby, gems, etc...) from a batch file.
Anyone have any clues how I could get started with this?
Download and install ruby to a folder inside your project (do not add it to your PATH). After go to this folder and delete any "uninstall" file. Go to the folder again with the console (cmd and then use cd path\to\ruby\folder) and run gem install ... to install everything you need. After add a .bat file to run your app. Something like:
#echo off
rubyfolder\bin\ruby.exe myscript.rb
This is a fully portable ruby installation, you can put it in any computer and it will work as well. (I use it as a portable ruby in my pendrive to let me play everywhere with ruby!)
PS.: rake is a script from bin, you can open it with:
rubyfolder\bin\ruby.exe rubyfolder\bin\rake