learning-area | Github repo for the MDN Learning Area | Learning library
kandi X-RAY | learning-area Summary
kandi X-RAY | learning-area Summary
Github repo for the MDN Learning Area.
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of learning-area
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QUESTION
I have a JSON data which I can get from this API. However when I copy the contents of this link into a local file and save it as JSON, and then import in in JS like:
...ANSWER
Answered 2022-Feb-12 at 22:25This happens because the import * as
line imports an_entire_modules_contents where cause the absence of an explicit export default
the default property coincides with the content of your json file. If you want the data
variable contains your json file you can use instead:
QUESTION
I tried to understand an example on MDN.
The effect of the current code is a bit confusing to me - after a pause if you wait a while and start again, the position of the arrow is not where it originally stopped.
How to make sure to restart where I left off? I thought of a way as below, but I am not very satisfied with it.
...ANSWER
Answered 2021-Sep-03 at 09:40This example code is a bit weird, they define a global rotateCount
that's never actually used and their use of the timestamp is ... yes, confusing.
Their let rotateCount = (timestamp - startTime) / 3;
makes it that the animation will take 1080ms to perform a full revolution (360deg x 3 = 1080ms).
But this is based on the difference between the current time and the start time. So indeed, even if you pause the animation, when restarting it will just like it never did pause.
To make this, you'd need to actually use the global rotateCount
(by not redefining a new variable inside draw
), and increment it every time by the amount of rotation that was needed since last draw, and not since the overall beginning.
Then you just need to ensure that the last-drawn timestamp gets updated when you resume the animation and you get your animation to actually pause and resume.
QUESTION
I am trying to write code that receives JSON data from a URL and inserts it into an html table. I can only change things in the "processResponse" function. Currently it says undefined in each table. Codepen link:
https://codepen.io/mauro-scheltens/pen/OJWQwXY
Here is my code:
...ANSWER
Answered 2021-Apr-12 at 09:42request.response
is a string, not JSON object. So you have to parse it to JSON before process it.
QUESTION
This tutorial page loads json from a hard-coded URL on page load: https://github.com/mdn/learning-area/blob/master/javascript/oojs/json/heroes-finished.html
How can I achieve the same but dynamically by adding an input field in the page and pasting the same url into that field and have that information be loaded onto the page on leaving focus of the input field (or clicking a button?)
...ANSWER
Answered 2020-May-15 at 02:47html:
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