I’m stringyfing an object like {‘foo’: ‘bar’} How can I turn the string back to an object? Answer You need to JSON.parse() your valid JSON string.
Tag: javascript
Fast way to get the min/max values among properties of object
I have an object in javascript like this: Is there a fast way to get the minimum and maximum value among the properties without having to loop through them all? because the object I have is huge and I need to get the min/max value every two seconds. (The values of the object keeps changing). Answer There̵…
How to set up CKEditor for multiple instances with different heights?
I’d like to have multiple instances of CKEditor based on the same config settings, but with different heights. I tried setting up config with the default height, setting up the 1st instance, then overriding the height & setting up the 2nd instance: …but I get two CKEditor instances that both h…
Why is process.env.NODE_ENV undefined?
I’m trying to follow a tutorial on NodeJS. I don’t think I missed anything but whenever I call the process.env.NODE_ENV the only value I get back is undefined. According to my research the default value should be development. How is this value dynamically set and where is it set initially? Answer …
Drawing at cursor position on canvas with JavaScript
I am trying to draw over a canvas by clicking and dragging the mouse. My problem is that, apart from the fact that the line has a very poor quality (I want a more pronounced border) it only respects the mouse position when this is at 0,0. As I move the mouse to the lower corner, the line increments its
Wait until setInterval() is done
I would like to add a small dice-rolling effect to my Javascript code. I think a good way is to use the setInterval() method. My idea was the following code (just for testing): Now I would like to wait for the setInterval until it is done. So I added a setTimeout. This code works quite okay. But in my main
How can I run a Greasemonkey script when page changed via ajax?
I have that script: It works fine but it works only main page load. I want to run this when page changed via ajax. How can I do that? Also please give examples with your answers. I’m newbie. I don’t know how to use things in your answers. Answer Since browser’s environment is event-driven yo…
Set IFrame allowfullscreen with javascript
I tried to set allowfullscreen attribute to the iframe, but it doesn’t work: I checked it with chrome -> inspect element, but the iframe has no allowfullscreen attribute, after this code. Thanks in advance, Answer iframe.setAttribute(‘allowFullScreen’, ”)
How to set a css class to an array of tags on mouse hover in Javascript?
I’ve written a little JS code to change the classname on hover. I know it can be done with CSS, but this is just for my own knowledge. Plus, I want to add a transition effect. This is the code I came up with, although it’s not working. It might be because I set the styling this way ; .parentDIV
Open link in new window or focus to it if already open
I have a link which should open in a new tab, but if the tab is already open, just switch to it. I’ve tried with javascript, wnd = window.open() and than wnd.focus(), that works in Chrome 19, but not in FF 13 or IE 9. Here’s the code I’ve written : Any idea how can I open or switch to