I’m following this tutorial about dynamic programming and I’m struggling to implement memoization in the following problem: *Write a function called canSum(targetSum, numbers) that returns True only if the numbers in the array can sum to the target sum. All the numbers in the array are positive in…
Tag: javascript
Creating an image from an svg is not working
I have been trying to create an image (using the window.Image class) out of an DataURL. This DataURL contains a svg tag and a foreignObject. But it just stays completely empty. I also tried to draw this image on a canvas, but I don’t think that’s the problem since I can’t even get a correctl…
Replace Loops using Recursion
I really need a feed back on my explanations especially on 2) and 3). I just want to confirm if I understood it correctly or no since I am a newbie. This is a freeCodeCamp challenge which was really challenging for me because I have no experience with JS before. It goes as below. Write a recursive function, s…
Toggle not working for material ui check boxes when printed in loop
I am trying to print checkboxes of 4 per a row, where row and values of these checkboxes comes dynamically (row count may vary ) below is my jsx code After fetching the matix data I am setting state variable const[checked, setChecked] = useState([]) as below what I have tried, is since my rows which are chang…
Having a hard time changing background color in Vue js
I’m trying to make the background color of the landing page orange, but the issue is that what I currently have makes all the pages orange. I tried adding scoped to the landing page so it would style only that page, but when I do this, the entire page isn’t orange anymore. The end goal is to only …
Vue 3 i18n issue: The message format compilation is not supported in this build
vue & vue-i18n version ex: vue: 3.0.0.0 vue-i18n: 9.0.0-beta.15 Description I am probably doing something very wrong, however I would really appreciate some direction. I followed documentation from vue-i18n@next. Translation does not work and I get message in console: [intlify] The message format compilat…
Compare arrays of Errors in Chai
I have a validator method that returns an array with Errors. I want to create a unit test that compares this errors, but I can’t use expect(fn).to.throw since I don’t throw the errors, just return them. This is my approach but I get AssertionError: expected [ Array(2) ] to have the same members as…
Searching nested object by property name and copying to new object does not result in all objects being copied
Link to TS Playground. I’m trying to find all arrays with objects that contain the property name no matter how nested the initial data object is; and for some reason the final result only contains 1 result instead of all of them. When I debug at line 45 with I can see that it finds all objects; all 3 of
Need to select text of selected dropdown using JavaScript
I have a dropdown with values. I have an array array with a list of values that will match the drop down values. If the value of text option of the dropdown exists in the array, it shouldn’t show in the dropdown as an option. I am stuck on the approach I should use. This is what I have so
Break array of objects into 2dimensional array
I need to break an array of objects into a 2-dimensional array where 1-dimensional arrays would consist of objects which have their attributes ‘for’ and ‘to’ being not overlapping intervals. Example: Given array arr1 I wish to receive arr2 How it should work: We loop through the arr1. …