If you are interested in finding out whether a variable has been declared regardless of its value, then using the in operator is the safest way to go. Consider this example: But this may not be the intended result for some cases, since the variable or property was declared but just not initialized. Use the in operator for a … Read more
I am getting this error when I run npm start to run my express app. my app.js code my index.js code I am quirte new to using Node and express. I cant see where I have gone wrong. Can anybody see what my problem is?
$.delay is used to delay animations in a queue, not halt execution. Instead of using a while loop, you need to recursively call a method that performs the check every second using setTimeout:
The cleaner way would be to not use .forEach. It’s almost never needed if you’re using TypeScript or a modern version of JavaScript: If the code inside your loop doesn’t have any side-effects and you’re just checking for a condition on each item, you could also use a functional approach with .some:
From the Docs: Then you do
I have two demos, one with jQuery and one without. Neither use date functions and are about as simple as it gets. Demo with vanilla JavaScript Expand snippet Demo with jQuery However if you want a more accurate timer that is only slightly more complicated: Expand snippet Now that we have made a few pretty … Read more
You should provide a selector to the on function: In that case, it will work as you expected. Also, it is better to specify some element instead of document. Read this article for better understanding: http://elijahmanor.com/differences-between-jquery-bind-vs-live-vs-delegate-vs-on/
With ES2017 async/await support, this is how to POST a JSON payload: Expand snippet Can’t use ES2017? See @vp_art’s answer using promises The question however is asking for an issue caused by a long since fixed chrome bug.Original answer follows. chrome devtools doesn’t even show the JSON as part of the request This is the … Read more
I use Axios to perform an HTTP post like this: Is this correct? Or should I do: