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0.8.1 • Public • Published 2 years ago ReadmeCode Beta8 Dependencies8 Dependents28 VersionsLaunchpadYou can launch browsers! With NodeJS!Local browsers for MacOS, Windows and Linux (like) operating systemsBrowserStack browsers using the BrowserStack APIAPIThe general API for any launcher () looks like this:var launch = require('launchpad');launch.type>(configuration, function(error, launcher) { launcher.browsers(function(error, browsers) { // -> List of available browsers with version }); launcher(url, configuration, function(error, instance) { instance // -> A browser instance instance.id // -> unique instance id instance.stop(callback) // -> Stop the instance instance.status(callback) // -> Get status information about the instance }); launcher.browsername>(url, function(error, instance) { // Same as above });});Local launchersLocal launchers look up all currently installed browsers (unless limited by LAUNCHPAD_BROWSERS - see below for details) and allow you to start new browser processes.// Launch a local browserlaunch.local(function(err, local) { local.browsers(function(error, browsers) { // -> List of all browsers found locally with version }); local.firefox(' function(err, instance) { // An instance is an event emitter instance.on('stop', function() { console.log('Terminated local firefox'); }); });});Environment variables impacting local browsers detectionBy default Launchpad looks up all installed browsers. To speed-up this process you can define the following env variables:LAUNCHPAD_BROWSERS - comma delimited list of browsers you want to use, e.g. LAUNCHPAD_BROWSERS=chrome,firefox,opera. Other browsers will not be detected even if they are installed.LAUNCHPAD_ - specifies where given browser is installed so that Launchpad does not need to look for it, e.g.LAUNCHPAD_CHROME=/usr/bin/chromiumThe following browser names are recognized: chrome, firefox, safari, ie, edge, opera, canary, aurora, electron, phantom, nodeWebKit.Not all platforms support all browsers - see platform for details.BrowserstackBrowserStack is a great cross-browser testing tool and offers API access to any account that is on a monthly plan.Launchpad allows you to start BrowserStack workers through its API like this:launch.browserstack({ username : 'user', password : 'password' }, function(err, browserstack) { browserstack.browsers(function(error, browsers) { // -> List of all Browserstack browsers }); browserstack.ie(' function(err, instance) { // Shut the instance down after 5 seconds setTimeout(function() { instance.stop(function (err) { if(err) { console.log(err); } console.log('Browser instance has stopped'); }); }, 5000); });});Behind the scenes we have the node-browserstackmodule do all the work (API calls) for us.

Copying Text to Clipboard with JavaScriptAutomatic clipboard copying can be risky, which is why most browsers make it difficult. No one wants their clipboard filled with suspicious links or unexpected content.To ensure safety, any method for copying content to the clipboard must be triggered by a user action, such as a click. Even using Flash won’t bypass this requirement.In this guide, we’ll walk you through easy methods to copy text to the clipboard using pure JavaScript.1. Using document.execCommand()This is an older method but still works in many browsers. It requires a hidden textarea or input element, and a user-triggered action (e.g., a click) to copy the text.function copyTextToClipboard(text) { var textarea = document.createElement('textarea'); textarea.value = text; document.body.appendChild(textarea); textarea.select(); document.execCommand('copy'); document.body.removeChild(textarea); console.log('Text copied to clipboard');}You would call this function with the text you want to copy:copyTextToClipboard('Hello, World!');Remember, this method requires a user-triggered event (like a click), and the textarea must be visible for the function to work.2. Using the Clipboard APIA more modern and recommended approach is using the Clipboard API. This method is simpler and doesn’t require a hidden textarea.function copyTextToClipboard(text) { navigator.clipboard.writeText(text).then(function() { console.log('Text successfully copied to clipboard'); }).catch(function(err) { console.error('Unable to copy text: ', err); });}You would use it the same way:copyTextToClipboard('Hello, World!');The Clipboard API is supported in most modern browsers and is a cleaner solution than using execCommand.3. Using Clipboard.jsIf you're working with a library, Clipboard.js is a lightweight, dependency-free library designed for copying text to the clipboard without Flash.Use it with a button:Copy textvar clipboard = new Clipboard('.btn');clipboard.on('success', function(e) { console.info('Action:', e.action); console.info('Text:', e.text); console.info('Trigger:', e.trigger); e.clearSelection();});clipboard.on('error', function(e) { console.error('Action:', e.action); console.error('Trigger:', e.trigger);});In this example, all elements with the class .btn will copy the specified text to the clipboard when clicked.4. Fallback with FlashIf you need to support older browsers, Flash may be required as a fallback. Although this is not ideal, you can use ZeroClipboard, a Flash-based solution. Copy to Clipboard var client = new ZeroClipboard(document.getElementById("copy-button")); client.on("ready", function(readyEvent) { client.on("aftercopy", function(event) { event.target.style.display = "none"; alert("Copied text to clipboard: " + event.data["text/plain"]); }); }); With ZeroClipboard, a click on the button will trigger the clipboard

Data *RenderContext) (io.Reader, error) { tmpl, err := template.New("thermo").Parse(` {{.Assigns.C}} + - `) if err != nil { return nil, err } var buf bytes.Buffer if err := tmpl.Execute(&buf, data); err != nil { return nil, err } return &buf, nil }) // This handles the `live-click="temp-up"` button. First we load the model from // the socket, increment the temperature, and then return the new state of the // model. Live will now calculate the diff between the last time it rendered and now, // produce a set of diffs and push them to the browser to update. h.HandleEvent("temp-up", tempUp) // This handles the `live-click="temp-down"` button. h.HandleEvent("temp-down", tempDown) http.Handle("/thermostat", NewHttpHandler(NewCookieStore("session-name", []byte("weak-secret")), h)) // This serves the JS needed to make live work. http.Handle("/live.js", Javascript{}) http.ListenAndServe(":8080", nil)}Notice the script tag. Live's javascript is embedded within the library for ease of use, andis required to be included for it to work. You can also use the companionnpm package to add to any existing web app buildpipeline.Live componentsLive can also render components. These are an easy way to encapsulate event logic and make it repeatable across a page.The components examples show how to createcomponents. Those are then used in the world clocks example.Hello {{.}} `, c).Render(w) }), )}func Example() { h := live.NewHandler( WithComponentMount(func(ctx context.Context, h live.Handler, s live.Socket) (*Component, error) { return NewGreeter("hello-id", h, s, "World!") }), WithComponentRenderer(), ) http.Handle("/", live.NewHttpHandler(live.NewCookieStore("session-name", []byte("weak-secret")), h)) http.Handle("/live.js", live.Javascript{}) http.ListenAndServe(":8080", nil)}">package pageimport ( "context" "io" "net/http" "github.com/jfyne/live")// NewGreeter creates a new greeter component.func NewGreeter(ID string, h live.Handler, s live.Socket, name string) (*Component, error) { return NewComponent( ID, h, s, WithMount(func(ctx context.Context, c *Component) error { c.State = name return nil }), WithRender(func(w io.Writer, c *Component) error { // Render the greeter, here we are including the script just to make this toy example work. return HTML(` Hello {{.}} `, c).Render(w) }), )}func Example() { h := live.NewHandler( WithComponentMount(func(ctx context.Context, h live.Handler, s live.Socket) (*Component, error) { return NewGreeter("hello-id", h, s, "World!") }), WithComponentRenderer(), ) http.Handle("/", live.NewHttpHandler(live.NewCookieStore("session-name", []byte("weak-secret")), h)) http.Handle("/live.js", live.Javascript{}) http.ListenAndServe(":8080", nil)}NavigationLive provides functionality to use the browsers pushState API to update its query parameters. This can be done fromboth the client side and the server side.Client sideThe live-patch handler should be placed on an a tag element as it reads the href attribute in order to applythe URL patch.Next page">a live-patch href="?page=2">Next pagea>Clicking on this tag will result in the browser URL being updated, and then an event sent to the backend which willtrigger the handler's HandleParams callback. With the query string being available in the params map of the handler.h.HandleParams(func(s *live.Socket, p live.Params) (interface{}, error) { ... page := p.Int("page") ...})Server sideUsing the Socket's PatchURL func the serverside can make the client update the browsers URL, which will then trigger the HandleParams func.RedirectThe server can also trigger a redirect if the Socket's Redirect func is called. This will simulate an HTTP redirectusing window.location.replace.FeaturesClick Events live-capture-click live-click live-value-*The live-click binding is used to send click events to the server.">div live-click="inc" live-value-myvar1="val1" live-value-myvar2="val2">div>See the buttons example