I’ve seen on StackOverflow and googling around that the most used way to get the selected text from a <SELECT> element with jquery is like this what I have is not the id, but an object. I have an object, say coming from an earlier piece of code. I’ve done like this to get the selected text, …
Is it correct to use JavaScript Array.sort() method for shuffling?
I was helping somebody out with his JavaScript code and my eyes were caught by a section that looked like that: My first though was: hey, this can’t possibly work! But then I did some experimenting and found that it indeed at least seems to provide nicely randomized results. Then I did some web search a…
Generic way to detect if html form is edited
I have a tabbed html form. Upon navigating from one tab to the other, the current tab’s data is persisted (on the DB) even if there is no change to the data. I would like to make the persistence call only if the form is edited. The form can contain any kind of control. Dirtying the form need not be
Frame Buster Buster … buster code needed
Let’s say you don’t want other sites to “frame” your site in an <iframe>: So you insert anti-framing, frame busting JavaScript into all your pages: Excellent! Now you “bust” or break out of any containing iframe automatically. Except for one small problem. As it turns…
How do I chop/slice/trim off last character in string using Javascript?
I have a string, 12345.00, and I would like it to return 12345.0. I have looked at trim, but it looks like it is only trimming whitespace and slice which I don’t see how this would work. Any suggestions? Answer You can use the substring function: This is the accepted answer, but as per the conversations…
What is the JavaScript version of sleep()?
Is there a better way to engineer a sleep in JavaScript than the following pausecomp function (taken from here)? This is not a duplicate of Sleep in JavaScript – delay between actions; I want a real sleep in the middle of a function, and not a delay before a piece of code executes. Answer 2017 — 2021 up…
How do I include a JavaScript file in another JavaScript file?
How do I include a JavaScript file inside another JavaScript file, similar to @import in CSS? Answer The old versions of JavaScript had no import, include, or require, so many different approaches to this problem have been developed. But since 2015 (ES6), JavaScript has had the ES6 modules standard to import …
How to call public method from a event handler
I have the function below. Everything works fine except for the Push, Pop and Remove method. These method should be called by the event-handler. This event is fired by the Google Maps API. The problem is that when the event is fired, these method are not found. I have a “Push is not defined” error…
Equivalent JavaScript functions for Python’s urllib.parse.quote() and urllib.parse.unquote()
Are there any equivalent JavaScript functions for Python’s urllib.parse.quote() and urllib.parse.unquote()? The closest I’ve come across are encodeURI()/encodeURIComponent() and escape() (and their corresponding un-encoding functions), but they don’t encode/decode the same set of special cha…
What is the difference between ‘ and ” in JavaScript?
I saw this question and I am wondering about the same thing in JavaScript. If you use the character ‘ or the character ” when making strings in JavaScript, the application seems to behave the same. So what is the difference between these two characters? The only advantage I have seen in using R…