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What is casperjs?

yyx990803/casperjs — explained in plain English

Analysis updated 2026-07-17 · repo last pushed 2013-10-23

★ 5JavaScriptAudience · developerComplexity · 3/5DormantSetup · moderate

In one sentence

A scripting tool for automating headless-browser actions like navigating pages, filling forms, and clicking buttons, used to test websites without manual clicking.

Mindmap

mindmap
  root((repo))
    What it does
      Automates browser actions
      Navigates and clicks pages
      Runs test assertions
    Tech stack
      JavaScript
      PhantomJS
      SlimerJS
    Use cases
      Test checkout flows
      Fill and submit forms
      Monitor client websites
    Audience
      QA teams
      Developers

Code map

Detail Auto

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filefunction / class

What do people build with it?

USE CASE 1

Write a script that automatically tests whether a website's forms and buttons work correctly

USE CASE 2

Automate repetitive checks like verifying a checkout flow completes successfully

USE CASE 3

Monitor whether a client's website is still functioning as expected without manual clicking

What is it built with?

JavaScriptPhantomJSSlimerJS

How does it compare?

yyx990803/casperjs00kaku/wp-rest-playgroundchalarangelo/mini-active-record
Stars555
LanguageJavaScriptJavaScriptJavaScript
Last pushed2013-10-23——
MaintenanceDormant——
Setup difficultymoderatehardeasy
Complexity3/53/51/5
Audiencedeveloperdevelopervibe coder

Figures from each repo's GitHub metadata at analysis time.

How do you get it running?

Difficulty · moderate Time to first run · 30min

Requires installing a headless browser dependency (PhantomJS or SlimerJS).

Copy-paste prompts

Prompt 1
Write a CasperJS script that navigates to a page, fills out a contact form, and submits it
Prompt 2
Show me how to add assertions in CasperJS to verify a dropdown menu opens correctly
Prompt 3
Set up a CasperJS test suite that checks whether images load on my site and outputs results in a standard format

Frequently asked questions

What is casperjs?

A scripting tool for automating headless-browser actions like navigating pages, filling forms, and clicking buttons, used to test websites without manual clicking.

What language is casperjs written in?

Mainly JavaScript. The stack also includes JavaScript, PhantomJS, SlimerJS.

Is casperjs actively maintained?

Dormant — no commits in 2+ years (last push 2013-10-23).

How hard is casperjs to set up?

Setup difficulty is rated moderate, with roughly 30min to a first successful run.

Who is casperjs for?

Mainly developer.

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