dom-events | 易学教程

Javascript alert messages in infinite loop

阅读更多关于 Javascript alert messages in infinite loop

问题 Alert boxes in infinite loop, here I am trying to put a popup alert message on 2 consecutive fields so they cannot be left blank, I know why it is happening - because when onblur event of 1st function is launched it gives focus to second one & when it jumps back to first one onblur of 2nd textfield is launched. I know validation would be best when done at the form level, but this is the requirement I got. Any help? Javascript code function x() { if( document.getElementById("1").value.length=

How to add function on button in phonegap?

阅读更多关于 How to add function on button in phonegap?

问题 I'm new to Phonegap and I want to develop a Phonegap application for Android.. I want to give some function on button click on my html.. I've tried this code but it does not work: index.html <!DOCTYPE HTML> <html> <head> <title>PhoneGap</title> <script type="text/javascript" charset="utf-8" src="phonegap.js"></script> <script type="text/javascript" charset="utf-8" src="mycode.js"></script> </head> <body onload="init();> <h1>Hello World</h1> <form> <input type="button" value="Click me" onclick

Adding multiple addListener events to a Google Map form with geocoding

阅读更多关于 Adding multiple addListener events to a Google Map form with geocoding

问题 I have created a Google Map form that lets users enter an address into a text field and geocode the entry. This then puts a marker on a map. This works fine, but I want to add an additional addListener so when the user clicks the map it will add another pin where they click. For some reason my 'click' addListener is not working. How would I have multiple add Listeners like that? I attached my current code: function initialize() { var mapOptions = { center: new google.maps.LatLng(40.7,-74.0),

Changing Javascript Focus in onClick event?

阅读更多关于 Changing Javascript Focus in onClick event?

问题 Note: A possible solution needs only work in Firefox 3.0, my app doesn't allow access from IE! =) I have a link that, when clicked, will display a lightbox to the user: <a href="#" onclick="show_lightbox();return false;">show lightbox</a> My problem is that when the lightbox is displayed, the focus remains on the link. So if the user presses the up or down keys, they end up scrolling the main document, not the lightbox that is displayed! I've tried to set the focus to the lightbox element

List of an element's events

阅读更多关于 List of an element's events

问题 Is there a way to find all of the events for a element in javascript? or a way to unbind all events from a element? Thanks. 回答1: There is not way to do that directly using javascript. Jquery has a couple of functions to keep track of that data. One "pure" way to do that is to change the addEventListener/attachEvent function through prototyping (search about javascript prototype stuff, not the framework). Or if you have a custom function to hadle adding/removing events you can tune it. Well,

Browser tab change notification like when you get a new gmail e-mail or a new tweet in Twitter

阅读更多关于 Browser tab change notification like when you get a new gmail e-mail or a new tweet in Twitter

问题 In Chrome and Firefox, whenever I get a new email the inactive tab displays a very subtle notification. Basically, it just shines a little. In Chrome is shines from left to right as if someone is shining a flashlight on the tab. It also does this when your are on the Twitter homepage, and a new tweet shows up. I'm sure it is some Javascript function, but I can't seem to find it, because I don't think I am asking the question right. Does anyone know how to do this? 回答1: I posted an answer to a

JavaScript inside an <img title=“<a href='#' onClick='alert('Hello World!')>The Link</a>” /> possible?

阅读更多关于 JavaScript inside an

问题 <img title="<a href='#' onClick='alert('Hello World!')>The Link</a>" /> So I've got some specific question.. I already know that I can work with attributes inside a TITLE attribute.. But can I work with events inside a TITLE attribute? (btw - It seems like a rubbish code, but this already works as is should on my web project - I just need a way to use some Javascript on this sheathed link.) I USE Jquery framework. 回答1: No, this is, as you say "rubbish code". If it works as should, it is

How to trigger browser's back event/function using JavaScript?

阅读更多关于 How to trigger browser's back event/function using JavaScript?

问题 I want to trigger the browser's back functionality through a hyperlink in my page template, using JavaScript (or PHP if possible). Does anyone know how to implement this? EDIT Found the solution using JavaScript. Here is the link if anyone needs it. And here's the code: <a href="#" onclick="history.back();return false;">Go back</a> 回答1: history.back() should do the trick. window.history.back() documentation at MDN As an aside, it's bad user experience if you do this unexpectedly on the user.

Has Apple released APIs for touch bar yet?

阅读更多关于 Has Apple released APIs for touch bar yet?

问题 Apple just announced the new MacBook with the touch bar. Are there APIs that app developers can use? I can't seem to find any online yet. Does it support access from the browser via JavaScript? WebKit has force touch APIs to support it on four runs touch trackpad) so I'm guessing it'll be pretty useful if they release this one too. Is anything out yet? Also how to debug and test for touch bar functions, is there some 'MAC EMULATOR' sort of thing? 回答1: I think this option is for native client,

PrimeFaces autocomplete: itemSelect versus change events

阅读更多关于 PrimeFaces autocomplete: itemSelect versus change events

问题 I need to trigger an ajax update upon change to a text box, which is a <p:autoComplete> component. I have observed that if the user opts to type the text manually, the event is a change, whereas if the user clicks one of the suggestions for the autocomplete, the event is itemSelect. So I added two <p:ajax> children to the input, each calling the same method and having the same update list, but one having event="change" and the other event="itemSelect" . However, I now discover something odd.