javascript - Sample Casper JS Script does not work - Stack Overflow

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UPDATE: I found the solution and I forgot to add

var casper = require('casper').create();

on the top.

The original question: I installed phantom js 1.9.2 and casper js 1.0.3. Additionally I copy and pasted the follwing sample script directly from the casper js tutorial page:

casper.start('/', function() {
    var url = '/';
    this.download(url, 'google_pany.html');
});

casper.run(function() {
    this.echo('Done.').exit();
});

This is the output on my mac os lion:

bin Tom$ ./casperjs ../site_loader.js 
2013-11-26 18:53:20.375 phantomjs[2136:130b] *** WARNING: Method userSpaceScaleFactor in class NSView is deprecated on 10.7 and later. It should not be used in new applications. Use convertRectToBacking: instead. 
ReferenceError: Can't find variable: casper

  ../site_loader.js:1
Hint: you may want to use the `casperjs test` mand.
^C

I have to manually cancel it otherwise it will never stop. However running the suggested mand yields:

bin Tom$ ./casperjs test
2013-11-26 18:54:01.504 phantomjs[2137:130b] *** WARNING: Method userSpaceScaleFactor in class NSView is deprecated on 10.7 and later. It should not be used in new applications. Use convertRectToBacking: instead. 
No test path passed, exiting.

What is not correct here?

UPDATE: I found the solution and I forgot to add

var casper = require('casper').create();

on the top.

The original question: I installed phantom js 1.9.2 and casper js 1.0.3. Additionally I copy and pasted the follwing sample script directly from the casper js tutorial page:

casper.start('http://www.google.fr/', function() {
    var url = 'http://www.google.fr/intl/fr/about/corporate/pany/';
    this.download(url, 'google_pany.html');
});

casper.run(function() {
    this.echo('Done.').exit();
});

This is the output on my mac os lion:

bin Tom$ ./casperjs ../site_loader.js 
2013-11-26 18:53:20.375 phantomjs[2136:130b] *** WARNING: Method userSpaceScaleFactor in class NSView is deprecated on 10.7 and later. It should not be used in new applications. Use convertRectToBacking: instead. 
ReferenceError: Can't find variable: casper

  ../site_loader.js:1
Hint: you may want to use the `casperjs test` mand.
^C

I have to manually cancel it otherwise it will never stop. However running the suggested mand yields:

bin Tom$ ./casperjs test
2013-11-26 18:54:01.504 phantomjs[2137:130b] *** WARNING: Method userSpaceScaleFactor in class NSView is deprecated on 10.7 and later. It should not be used in new applications. Use convertRectToBacking: instead. 
No test path passed, exiting.

What is not correct here?

• javascript
• web-scraping
• casperjs

Share Improve this question Follow edited Nov 26, 2013 at 18:00 toom asked Nov 26, 2013 at 17:55 toomtoom 13.4k2727 gold badges9595 silver badges137137 bronze badges 1

• The example is for version 1.1.0-dev If you update, you will need to remove the var casper = require('casper').create();, otherwise the program won't exit because the casperjs test mand will provide that call – hexid Commented Nov 26, 2013 at 18:03

Add a ment  | 

1 Answer 1

Sorted by: Reset to default 4

Very first of all, you need to create a casper instance to work with, then everything you have written will work!

// sample.js
var casper = require('casper').create();

casper.start('http://www.google.fr/', function() {
    var url = 'http://www.google.fr/intl/fr/about/corporate/pany/';
    this.download(url, 'google_pany.html');
});

casper.run(function() {
    this.echo('Done.').exit();
});

Output:

C:\Users\hello\Desktop>caperjs sample.js
Done.

C:\Users\hello\Desktop>ls -alt
-rwx------ hello mkpasswd 91 Nov 28 09:11 google_pany.html 
...

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