Hello I need a little help with js i have 2 arrays how can I replace the elements of a with b with ignoring the undefined index so the output would be I tried to do it like this but I got the array b back Answer You can iterate over array a using array#map and then extract the values
Tag: javascript
Regular expression to convert html class to attribute
Is there any way to use regular expression alone or with help of javascript to do the following from to Answer This regular expression will match what you describe, regardless of the position of “type-xxx” in class attribute Combining with a string replace this will yield the result
MetaMask does not inject window.ethereum: Uncaught (in promise) TypeError: Cannot read property ‘request’ of undefined
To start, let me mention this is an in-browser project, so i can only use So a few months back I made a dapp, which worked fine even tho I never set a provider, so I guessed it used the ones given by MetaMask. However, i am using the guide here the only issue is the following code, This code
Puppeteer Cannot read property getElementById of undefined
I’m trying to pass a value to the browser created by the puppeteer, but this error appears: Cannot read property ‘getElementById’ of undefined The error is in this line: what am I doing wrong? Thanks. Answer You can only use getElementById in the page context. Use page.evaluate, eg: ThatR…
Can’t update state array using hooks on findIndex condition
I have a bunch of data as such I am trying to store each ‘exercise’ that is listed, I don’t need a tally of them just if it occurs once, stick it into the state array and ignore it if it comes up again so as not to add it again. i.e as an example Outside of react, I could
JSON.aprse() error when using php json_encode()
i know that this question asked before but i have never found anything working for my case i have 2 array which is looking like this Array ( [0] => Array ( [`19 January 2021`] => Array ( [0] => Array ( [0] => 36 [1] => 817 [2] => 67 ) ) ) ) Array ( [0] => Array
Creating a linked list object using js
I want to make a linked list using custom Object that pushes a value, pop a value, display all its content, remove an item from a specific place, and insert at a specific place as long as the value is missing from the sequence otherwise through an exception. All of the properties should be defined using data …
Why my Redux reducer is undefined when I import it
Good evening, I have a small problem. I code an application with React and Redux + Redux Toolkit and simply at the time of importing my reducer in the root reducer, therefore the rootReducer, I realize that my reducer therefore unReducer was not imported correctly, here is the problem. I put the scope of my r…
How to sent value from select box using Ajax?
I have a select box with two options “Approved/Disapproved”. I want the selected option to be sent over to a page ‘action_user_2.php’. Currently, it is sending information when clicking on …
Including Javascript snippet that starts with $ in Nuxt page – returns this.$ is not a function
I’m often having difficulty figuring out how to include Javascript snippets in individual components/pages with Nuxt. In the code below, I am getting $ is undefined: I’ve also tried removed this. – that gives me $ is undefined. Any help is appreciated – thanks Answer You’re tryin…