the http:// or file://. GitHub electron / electron Public Notifications Fork 14.4k Star 106k Code Issues 872 Pull requests Actions Projects Security Insights New issue executeJavascript not working, ReferenceError: require is not defined #17520 Closed Returns boolean - Whether web page is still loading resources. JS (inject) WebView XY problem . You have a simple example there: https://electron.atom.io/docs/api/webview-tag/#event-ipc-message, You should be able to find more detailed tutorials for such communication between a Renderer and a webview, e.g. Returns number - the current zoom factor. explicitSet is false when Returns Promise - the promise will resolve when the page has finished loading Deprecated: This event is superceded by the render-process-gone event Not exactly sure why you resort to inject JS code into a WebView, but why not Make sure it is not an XY problem. chains will not be included. Electron's webview tag is based on Chromium's webview, which A boolean. Use page-break-before: always; CSS style to force to print to a new page. This will cause the render-process-gone event to be emitted when this process is unstable or unusable, for instance in order to recover send arbitrary arguments. Returning an unrecognized value such as a null, undefined, or an object Find centralized, trusted content and collaborate around the technologies you use most. Emitted before dispatching the keydown and keyup events in the page. with native view, which developers have very limited control of. of a before it's loaded, and provides the ability to set settings This event is not emitted for in-page navigations, such as clicking anchor links executeJavascript not working, ReferenceError: require is not defined, https://github.com/robyf/google-chat-linux/blob/master/wrappedWindow.js. The image is an instance of NativeImage that stores the A WebFrameMain property that represents the frame that opened this WebContents, either page, or waitForBeforeUnload is false or unspecified), the WebContents will windows. Ignore application menu shortcuts while this web contents is focused. Can My code is GPL licensed, can I issue a license to have my code be distributed in a specific MIT licensed project? To only prevent the menu shortcuts, use Process: Main webContents is an EventEmitter . It doesn't have the same permissions as your web page and all interactions Returns string - The title of the current web page. the window.location object is changed or a user clicks a link in the page. Make sure you understand How to return the response from an asynchronous call? The following DOM events are available to the webview tag: Fired when a load has committed. A name by itself is given a true boolean value. Returns Promise - A promise that resolves with the result of the executed code (inject)( url )How to return the response from an asynchronous call? Opens the DevTools for the service worker context present in the guest page. by its key, which is returned from .insertCSS(css). If it is too difficult at this stage, I can easily use this to piggy-back my own wrapper as such: I don't know the internals of executeJavaScript, so adding "two" types of returns may be too difficult to do, in which case I'm happy to do the above. IPC messages sent with ipcRenderer.send, ipcRenderer.sendSync or How do I check if an array includes a value in JavaScript? If offscreen rendering is enabled and not painting, start painting. This event is like did-finish-load, but fired when the load failed or was By clicking Sign up for GitHub, you agree to our terms of service and spinning, and the onload event is dispatched. Already have an account? Not emitted if the creation of the window is canceled from cursor image in a NativeImage, and scale, size and hotspot will hold Emitted when an in-page navigation happened in any frame. changed by specifying outlivesOpener: true, in which case the opened window APIs like webContents.loadURL and webContents.back. blur events of WebContents, as the first responder of each window is not For example a 302 The following example code navigates the webview to about:blank when the A WebContents instance that might own this WebContents. To use tags, you Introducing Electron Forge 6, a complete pipeline for building your Electron apps. All your preloads will load for every iframe, you can If the type parameter is custom, the image parameter will hold the custom The usage is the same with the login event of app. Nothing happens when calling it, any console.log after it does nothing either. No response. Please note that some webContents share renderer An example of showing devtools in a tag: An example of showing devtools in a BrowserWindow: When contents is a tag, the mode would be detach by default, Should I put my dog down to help the homeless? Class: BrowserView Create and control views. Returns string - The user agent for guest page. from the unresponsive event. Returns Promise - Resolves with a NativeImage. focus change between different WebContents and BrowserView in the same Emitted when a has been attached to this web contents. this purpose. Plugins are disabled by default. However, if the nodeIntegrationInSubFrames This value can only be modified before the first navigation, since the session redirect. webPreferences = { 'nodeIntegration' : true } solves it all And documentation note regarding the change in default value somewhere handy would help :), 'var ipc = require(\'electron\').ipcRenderer; document.addEventLi, stener("click", (evt) => { if (evt.target && evt.target.localName == "a" && evt.target.target == "_blank", && evt.target.href.startsWith("http")) { ipc.send("open-link", evt.target.href); evt.preventDefault(); } }, 'var fi = document.querySelector("link#favicon256"); console.log(fi); ipc.send("favicon-changed", fi.href); var callback = function(mutationList) { ipc.send("favicon-chang, ed", fi.href); }; var observer = new MutationObserver(callback); observer.observe(fi, { attributes: true }. Returns {action: 'deny'} | {action: 'allow', outlivesOpener? Electron accomplishes this by combining Chromium and Node.js into a single runtime and apps can be packaged for Mac, Windows, and Linux. and the menu shortcuts. Only the dirty area is passed in the in JavaScript in Plain English Coding Won't Exist In 5 Years. WebView is a custom element () that will only work inside Electron. (). This impacts the stability of webviews, Schedules a full repaint of the window this web contents is in. Disable device emulation enabled by webContents.enableDeviceEmulation. You need to enable the tag by (see did-finish-load), and rejects Specifying overrideBrowserWindowOptions allows customization of the created window. The Asking for help, clarification, or responding to other answers. ipcRenderer module. Use did-navigate-in-page event for access to all Node APIs, but global objects injected by Node will be deleted form, the webview tag includes the src of the web page and css styles that the BrowserWindow Instance. Still works with latest. This is usually due to encountering a meta tag: Emitted when mouse moves over a link or the keyboard moves the focus to a link. Electron's BrowserView, or an architecture that avoids embedded content navigation outside of the page. invoked by a gesture from the user. Deprecated: Should use the new contents.getPrintersAsync API. Works like executeJavaScript but evaluates scripts in an isolated context. It includes the browser Chromium, fully configurable. false. webContents, that provide you with greater control over the content. For Electron to work, node and npm need to be pre-installed in the system. Algorithm, just like postMessage, so prototype chains will not be implement the webContents similarly to how the BrowserWindow does it. the same domain. remain available in future versions of Electron. To embed a web page in your app, add the webview tag to your app's embedder That would be great! zoom percent divided by 100, so 300% = 3.0. This method returns a Promise and it is resolved with the result of the executed code or the Promise is rejected if the result of the code itself is a rejected Promise. the window.location object is changed or a user clicks a link in the page. app. limits of 300% and 50% of original size, respectively. Returns number - The WebContents ID of this webview. and only allow the capabilities you want to support. Note: The BrowserWindow containing the contents needs to be focused for Opens the developer tools for the shared worker context. By using our site, you In most cases, only the Returns boolean - Whether guest page has a DevTools window attached. In some cases, the developer only needs to display some information without any interactions with an Android application. listening to the channel event with the ipcRenderer module. ElectronJS is an Open Source Framework used for building Cross-Platform native desktop applications using web technologies such as HTML, CSS, and JavaScript which are capable of running on Windows, macOS, and Linux operating systems. NOTE: Sending non-standard JavaScript types such as DOM objects or A string which is a list of strings which specifies the blink features to be disabled separated by ,. the spinner of the tab has stopped the cursor when dragging. by setting the bounds in the Main process. Emitted when the devtools window instructs the webContents to reload. The renderer process can handle the message by including rendering, navigation, and event routing. End subscribing for frame presentation events. messages sent from any frame, including child frames. undefined if there is no WebContents associated with the given ID. Already on GitHub? Prints window's web page. With the A place where magic is studied and practiced? Already on GitHub? Same as webContents.print([options]). The To use <webview> tags, you will need to set webviewTag to true in the webPreferences of your BrowserWindow. Here's sample code with two event listeners: one that listens Executes the editing command replace in web page. Starts inspecting element at position (x, y) of guest page. Starts a request to find all matches for the text in the web page. Removes the inserted CSS from the current web page. Consider switching to alternatives, like iframe and An Integer property that sets the frame rate of the web contents to the specified number. allow will allow the new window to be created. Overview Display external web content in an isolated frame and process. Emitted when a page's theme color changes. In Electron, the webContents property provides us with certain Instance methods by which we can dynamically inject JavaScript code within the BrowserWindow Instance during runtime. A boolean. The formula for this is Once the Does not work with beta or nightly (6). webContents.setWindowOpenHandler. In case, the executed code throws an Error, it will be displayed on the console. conjunction with did-create-window. Returns string - Returns the WebRTC IP Handling Policy. Returns Integer - If offscreen rendering is enabled returns the current frame rate. redirect. register handlers on the appropriate frame directly using the Returns boolean - Whether the web page is focused. Inter-Process Communication (IPC) in ElectronJS. Code execution will be suspended until web page stop loading. the webFrame.routingId value. Corresponds to the points in time when the spinner of the tab stops spinning. useful in different situations. The string follows the same format as the features string in window.open. By clicking Sign up for GitHub, you agree to our terms of service and How to handle a hobby that makes income in US. Send an asynchronous message to the renderer process via channel, along with The limits of 300% and 50% of original size, respectively. IWebView is the primary interface for loading and interacting with web content. Returns string - The identifier of a WebContents stream. Corresponds to the points in time when the spinner of the tab stopped spinning. The policy only affects Emitted when the cursor's type changes. How to return the response from an asynchronous call? Returns boolean - If offscreen rendering is enabled returns whether it is currently painting. WeakSets will throw an exception. Emitted when the unresponsive web page becomes responsive again. Emitted after successful creation of a window via window.open in the renderer. in-memory session. returns null. Emitted when a client certificate is requested. Arguments will be serialized with the Popups are disabled by default. the same domain. this purpose. How to calculate the number of days between two dates in JavaScript ? This is a known limitation in Chromium, you can force image animation to be when the DevTools has been closed. The things I'm doing may take variable time. Executes the editing command pasteAndMatchStyle in web page. or updating the window.location.hash. Emitted when the document in the top-level frame is loaded. Still, at the time of production, you need to make sure that your preload file is accessible via File Protocol since preload only accept the path of File protocol, I had a similar issue with me react based browser, At the time of production, it was not able to get the path of preload file. This class is not exported from the 'electron' module. Instead, it is controlled Emitted when the preload script preloadPath throws an unhandled exception error. For more information see the BrowserWindow constructor docs. Thanks for contributing an answer to Stack Overflow! Electron WebView executeJavaScript function clickHome () { webview.executeJavaScript ( 'document.querySelector ("a [data-testid]").click ();' ); } setInterval function ) and BrowserViews. The full list of error codes and their meaning is available here. See window.open() for more details and how to use this in conjunction with webContents.setWindowOpenHandler. the BrowserWindow object. When this attribute is present the guest page in webview will be able to use Steve export.runExec = runExec; line main.js html-, Uncaught TypeError: Can not read property addEventListener null :( - The dirtyRect is an object with x, y, width, height properties that Hide elements in HTML using display property. another layer of web content on top of your existing window. This will contain web contents setIgnoreMenuShortcuts: Emitted when the window enters a full-screen state triggered by HTML API. When in-page navigation happens, the page URL changes but does not cause Whereas, in the case of webContents, the method synchronously returns a promise. webview.executeJavascript() method does not return anything. Captures a snapshot of the page within rect. Controls whether or not this WebContents will throttle animations and timers Emitted when failed to verify the certificate for url. their position is not controlled by the DOM or CSS. It would be nice to simply build in the promise style resolve/reject into executeJavaScript such that it could easily return values. Sets the maximum and minimum pinch-to-zoom level. It contains methods and properties for common browser-related functionality, like LoadUrl (), GoBack (), Reload (), and ExecuteJavaScript (). Executes the editing command replaceMisspelling in web page. Adds the specified path to DevTools workspace. isInPlace will be for the web page to start loading, the other for the web page to stop loading, Special values yes and 1 are interpreted as true, while no and 0 are interpreted as false. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, how to get return value from webview.executeJavaScript in electron. If onlyDirty is set to An