dom-events

问题 I have a <textarea> and a <button> inside of a <form> . When submitted, I call e.preventDefault() and submit the form via AJAX . From there I return the query and PREPEND at information inside of a <div> at the top of this list. Also, I have given each item the ability to be deleted, which is instant on the client side but also submits a form via AJAX to be completely removed. This is sort of working. I am able to: Have a blank screen (no items added), create one and delete it no problems

问题 Anybody know how to do a deep copy/cloning of a native javascript event object? I know I can create a new event object and set the appropriate properties manually to match the original event, but it'd be much easier if there's a way to just clone. 回答1: For your purposes I'd just make it a prototype of a new object constructor and override the ones you want changed. Cloning in JS gets messy due to the circular reference issue so it may not be the quick and dirty solution you were hoping for.

问题 I have a web application that has to be run on Android. There are images on the web page that have onClick event listener (Javascript). For some reason, the onClick event works only after A LOT of touches on the image. Does anyone know how to fix this problem? 回答1: I fixed it using onTouchStart event instead of onClick event. 来源： https://stackoverflow.com/questions/4303084/android-browser-javascript-onclick-event-not-receiving-callbacks

问题 Perhaps this is a misconception of mine, but I thought that when you create a custom event, and later create "elements with event listeners" (listening for that event), that the event (itself) keeps track of all the listeners who are waiting for the event to occur and that when the event occurs all listeners are automatically notified. However, in all the examples I've seen, it looks like the notification-process is very explicit (not very automatic); you have to manually code the dispatching

问题 I'm building a webapp for Android smartphones that runs with the OS internet browser. the main interface is to input data. the data is added to a queue (android 1.5: gears, android 2.x: html5). Each 5 minutes (using setTimeout), the script looks if an internet connection is active, and if so, sends all the queue to the server. If the phone is plugged on the wall and the webpage is ontop, the timeout works. if the browser is minimized or another application runs on top of it, the timeout doesn

问题 Somewhere in my app I have a Tabs component and some tabs use a specific component which must use event capturing on the window (because D3...), anyway, the question is how to namespcae these specific events so I could run a "cleanup" just for them when switching between tabs (because window is shared between them). For example: (should only be fired on its own tab) window.addEventListener("mouseup", function(e){ console.log(1); // simplified code obviously }); I cannot simply remove all the

问题 I want to show message box when user click (X) button of ext window, and on 'ok' button of message box window will close. I wrote the code but it closes window first than show message box. Here is the code: var assignReportFlag = 0; var assignReportLoader = function(title,url){ var panel = new Ext.FormPanel({ id: 'arptLoader', height: 485, border: false, layout: 'fit', autoScroll: true, method:'GET', waitMsg: 'Retrieving form data', waitTitle: 'Loading...', autoLoad: {url: url,scripts: true}

问题 I'm trying to prevent certain user (mouse) events from firing on an instance of the Google Maps API I'm using on my website. I'm adding event listeners to events on the API instance like so: google.maps.event.addListener(map, 'click', mapClickHandler); Then defining the mapClickHandler event very simply like so: function mapClickHandler (e) { e.preventDefault(); } I have also tried the following variations: function mapClickHandler (e) { e.stopPropagation(); } // or // function

问题 I'm trying to prevent certain user (mouse) events from firing on an instance of the Google Maps API I'm using on my website. I'm adding event listeners to events on the API instance like so: google.maps.event.addListener(map, 'click', mapClickHandler); Then defining the mapClickHandler event very simply like so: function mapClickHandler (e) { e.preventDefault(); } I have also tried the following variations: function mapClickHandler (e) { e.stopPropagation(); } // or // function

问题 I have the viewPager component which is containing the several webviews with HTML content from remote server. Is it simple HTML code without possibility to change the HTMl output on the server side. I would like to ask, how can i catch the click(tap) event on the specified element with the given ID in Android? ViewPager private void initViewPager() { pager = (ViewPager) findViewById(R.id.my_pager); adapter = new FragmentStatePagerAdapter( getSupportFragmentManager() ) { @Override public int