I have a (Javascript) tool which dynamically creates a div whenever the user clicks on the screen. Now, after I’ve created _newDiv, I want to assign a onmousedown event to it. This works perfectly in Firefox, but doesn’t work in IE 8. Is there any hack I can use to solve this problem? Answer Problem solved! It turns out that
Find object by id in an array of JavaScript objects
I’ve got an array: I’m unable to change the structure of the array. I’m being passed an id of 45, and I want to get ‘bar’ for that object in the array. How do I do this in JavaScript or using jQuery? Answer Use the find() method: From MDN: The find() method returns the first value in the array, if
Webkit Javascript Console – How to use it?
I’m working on a project and there is a ton of js, etc in it. I didn’t write it I’m “taking it over”. There is a piece of Javascript somewhere that is adding top: -50px margin to an element with the id of “footer”. When I look into the page source (through the developer tools) I can right click on
Checking if jquery is loaded using Javascript
I am attempting to check if my Jquery Library is loaded onto my HTML page. I am checking to see if it works, but something is not right. Here is what I have: Answer something is not right Well, you are using jQuery to check for the presence of jQuery. If jQuery isn’t loaded then $() won’t even run at
Google Maps v3: How to tell when an ImageMapType overlay’s tiles are finished loading?
I’m working with the Google Maps v3 API, and I have a custom overlay layer based on the ImageMapType class. I would like to show a loading indicator of some sort while the overlay’s tiles are loading, but I don’t see any way to know when they are finished. The code to create the overlay looks similar to the following:
What is the difference between .map, .every, and .forEach?
I’ve always wondered what the difference between them were. They all seem to do the same thing… Answer The difference is in the return values. .map() returns a new Array of objects created by taking some action on the original item. .every() returns a boolean – true if every element in this array satisfies the provided testing function. An important
Detect version of JavaScript
How can I detect what version of JavaScript the browser supports (if any)? I want to check for ECMAScript 3 versus ECMAScript 5 versus ECMAScript 6. Note: I want to avoid the deprecated language tag. Answer I suppose it depends on what you want to do with the information, but many people prefer to do feature detection, instead of figuring
Warn user before leaving web page with unsaved changes
I have some pages with forms in my application. How can I secure the form in such a way that if someone navigates away or closes the browser tab, they should be prompted to to confirm they really want to leave the form with unsaved data? Answer Short, wrong answer: You can do this by handling the beforeunload event and
Detecting keydown/up events during HTML5 native drag
I’ve an element that can be dragged using native HTML5. It has dragstart, drag, and dragend event listeners assigned to it. In addition, I also have keydown and keyup event listeners assigned to document.body element. When dragging the draggable element, ondrag event will fire as expected. When I press & release any key while not dragging anything, document.body keydown/up events
Append semicolon on pressing enter key in asp.net textbox
How to add a semicolon to the text in asp.net text box (web application), on pressing enter and move the cursor to next line? Answer Here is a solution using pure JavaScript. HTML Code Behind (onclick javascript event wire up) JavaScript