Browserjet gives you access to headless webkit which is often useful for site scraping, testing, page screenshots, saving pdfs, and more.
To install the node.js module simply use
npm install browserjet
Currently supported is Linux 32/64
Browserjet provides and easy to use API. To load, manipulate, and save a page as a png you can use:
var browserjet = require('browserjet'),
browser = browserjet.createBrowser();
browser
.chain
.get("http://nodejs.org/")
.run(function() {
document.body.style.backgroundColor = '#000066';
})
.save('nodejs.png')
.end(function(err) {
if(err) { throw err; }
});Fetch the given page and pass ok to callback after completely loaded
browser.get("http://google.com/", function(err, ok) {
if(err) { throw err; }
console.log("Page loaded");
});Also see examples/loadspeed.js for another example
Set the browsers content to the given HTML and run callback when completely loaded
browser.setHtml("<html><body>Hello World</body></html>");Return the browsers HTML
Run the supplied javascript synchronously in the context of the currently loaded page and pass the last result to the callback
browser.run("document.getElementsByTagName('p').length", function(err, count) {
console.log("There are "+count+" paragraphs in the currently loaded page");
});An advanced command to run the given javascript asynchronously in the context of the currently loaded page, browserjet.callback is exposed on the page and returns its parameter to the callback.
browser.runAsync(function() {
// This code runs in the context of the loaded page
setTimeout(function() {
browserjet.callback(document.title);
}, 1000);
}, function(err, title) {
console.log(title);
});After 1s, the title of the currently loaded page is printed
Also see examples/qunit.js for another example of runAsync
Saves the current page, supported file extensions are image formats (png, gif, svg, tiff) and pdf
browser.save("page.pdf");
browser.save("/tmp/page.png");The browserjet tests use expresso, which you can install with
npm install -g expresso
Then in the module directory you can just run
expresso