dom-events

Following this question , communicating between an injected script and content script can be made that way: // Content script window.addEventListener("getChromeData", function(data) { // do Chrome things; }, false); // Injected script window.dispatchEvent(new CustomEvent("getChromeData", {data: 'whatever'})); I wanted to know if there is a way to make use of returned data into the injected script, using a promise or a callback mechanism? The communication back is again done with an event. You can use a one-shot listener to achieve a promise-based response. I will be passing an extra request ID

I have a simple WebView application which I want to control with the keyboard. Is it possible to catch arrow keys in Javascript? I have tried the following code without any luck: function handleArrowKeys(evt) { console.info('key'); } document.onkeyup = handleArrowKeys; document.onkedown = handleArrowKeys; document.onkepress = handleArrowKeys; Javascript is enabled in the webview WebSettings webSettings = webview.getSettings(); webSettings.setJavaScriptEnabled(true); webSettings.setDomStorageEnabled(true); Dynamic Content You should overwrite the onKeyDown method of WebView. See: http://blog

Is it possibile to detect if an element has stopped scrolling in Mobile Safari via Javascript? I have an element that has momentum scrolling by using -webkit-overflow-scrolling:touch , and I need to detect if the element has stopped scrolling, including after the momentum affects the scroll. Is this possible? Using the onscroll event is not working as it should within my app. dagge You can calculate a swipe velocity and try to figure out if momentum scroll will occur based on some threshold value. I've done some testing and about 0.25 pixels/ms seems to be a good value. Note: Sometimes

I'm working on a canvas-based game and am using window.addEventListener() to attach keyup and keydown events globally. This works in when viewing the page normally, but when embedding it as an iframe; it doesn't get the keyup and keydown events. Is there a better way I can do this? You can't, not unless the frame has focus. What you can do is make a keydown on the outer window focus the iframe, or always somehow focus the iframe, or focus the iframe by default (might be good enough, not sure what you're doing) But for the window keydown to fire on any window (frame or not) that frame needs

I know this is a question much discussed but I can't figure out why it does not work for me. This is my function: function ShowComments(){ alert("fired"); var movieShareId = document.getElementById('movieId'); //alert("found div" + movieShareId.textContent || movieShareId.innerText); //alert("redirect location: /comments.aspx?id=" + movieShareId.textContent || movieShareId.innerText + "/"); window.location.href = "/comments.aspx?id=" + movieShareId.textContent || movieShareId.innerText + "/"; var newLocation = window.location; //alert("full location: " + window.location); } If I have the