I’m making a Chrome extension that inserts 2 different React extensions on to the page. I’d like to keep each of them in sync by sending the 2nd one an event with appropriate data when something else is selected in the first one. Is there a best practice when it comes to sending events to other co…
Tag: dom-events
In this code, copied from ch 15 of eloquent javascript, what does the keyup event listener do?
In the following code, copied from ch 15 of Eloquent Javascript, how does pressed[codes[event.keyCode]] end up as a boolean value? I just can’t figure out why you need the ‘keyup’ event listener. The idea is to make sure that ‘keydown’ gets registered only once when it is being h…
What is the difference between DOMNodeInserted and DOMNodeInsertedIntoDocument?
According to the DOM events in wiki found in the wiki link here, DOMNodeInserted: Fires when a node has been added as a child of another node DOMNodeInsertedIntoDocument: Fires when a node is being inserted into a document Now what is the real difference? Shouldn’t both events be the same? If not when a…
NodeJS Nested Event listeners
I don’t get it, Why passed argument to the event emitter with nested event listeners streams all values? Is it because it has to pass through the upper level ‘join’ listener? Is variable information stored somewhere? This creates TCP server. Then you can join with tellnet localhost 7000, Ans…
My JavaScript isn’t changing className property
Here is the main part of my code attempting to toggle class on a p tag (info) on click of my button (btn). I’m not sure what I’m doing wrong. I have never used the className property before so I’m not sure if I’m missing something simple, or if there is fundamental error in my logic tr…
addEventListener firing multiple times for the same handle when passing in arguments with anonymous function
For some reason, the event listener is firing twice for each element when passing arguments into an anonymous function. I.e., the click event on element el will register once and, thus, fire once. But if I want to pass my own arguments to it, it will register and fire twice. The question is why and what’…
JavaScript CSS styling in IE
JavaScript CSS styling not working in IE, it is working in Chrome and Mozilla. This is my code: This is my HTML And this is my CSS Please Help. Answer Try this
Remove custom event listener
I’m listening to a custom event: I need to remove the listener. I’ve tried: but neither work. What am I doing wrong? Answer The third argument to removeEventListener is mandatory. try this:
Javascript onmouseover stop menu
I have this small menu. All I want is to open it with one click and then to close it with another click outside the html element. I figured out only how to open it with a click but don’t know how to close it: HTML portion: JavaScript code: Answer One solution is using an if condition:
Chrome extension – script loaded event?
Is it possible to get an event (or other way of knowing) when a specific script is loaded into a page? E.g. I have a page action that should perform action if jQuery is present and have finished loading. Answer I ended up listening for “DOMContentLoaded” and then perform required actions. Thanks f…