dom-events

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Event for browser tab hidden/shown?

Is there any DOM event for when the browser tab loses/gains focus? I know there are the blur and focus events on window, but they also fire when the browser window as a whole loses focus. The browser[详细]

2023-04-06 04:59 分类：问答
preventDefault blocks right-click menu in Firefox on Mac but not Windows

I have a web application in which I have hooked mouse up and mouse down events; I use them for selection and manipulation of the graphical language for which my application is an editor. To prevent th[详细]

2023-04-06 04:02 分类：问答
Why does window.open(...).onunload = function () { ... } not work as I expect?

I want to be able to tell when a window that I open is closed by the user.This is the code of my attempt at monitoring this:[详细]

2023-04-06 03:51 分类：问答
How to run JavaScript event when the iPad's screen is locked?

I am developing an alarm in HTML5 for iPad, but I noticed that when the screen goes into standby (or is b开发者_开发问答locked by the user), Safari blocks all events. I tried setTimeout().[详细]

2023-04-06 02:35 分类：问答
Need to fill multiple text fields when a drop down menu option is chosen

For some reason this code doesn\'t work in IE9 (could not try other开发者_开发问答 versions of IE). When tried it worked fine in Chrome and Firefox.. Text boxes comes up with message "undefined&q[详细]

2023-04-05 18:02 分类：问答
How do I prevent touchend event from apparently being "remembered" by the browser and firing subsequently at inappropriate times?

EDIT Based on the number of views and the complete lack of responses I have to assume that I did a poor job of communicating my issue. I\'m going to try to rectify that now.[详细]

2023-04-05 12:33 分类：问答
Getting drag and dropped files icon using Javascript

I want to get an icon\'s image when a 开发者_运维问答user drags and drops it over some kind of div, but that it\'ll show exactly what the user sees (e.g. thumbnail, *.ico), is it possible to do so, or[详细]

2023-04-05 11:59 分类：问答
Proper use of onmousemove

I am trying to write some JavaScript that draws a line by dragging the mouse, and then removes it when you let go of left click.[详细]

2023-04-05 11:10 分类：问答
Performance of large number of click listeners

(This is related to another question I asked, boiled down to the bare essentials). Would having a very large number of click listeners on a page be detrimental开发者_StackOverflow社区 to performance?[详细]

2023-04-05 11:07 分类：问答
Create an image using JavaScript at a particular distance

function on_click(e) { if( !e ) e = window.event; dragok = false; document.onmousemove = null; var x = e.target||e.srcElement;[详细]

2023-04-05 10:23 分类：问答