Tag: array.prototype.map

Using .map() to iterate over an array of Object values and reassign to new keys

I am trying to transform the data below from: To: I have been puzzling away at this for quite a while and can only get it looking like this, which is just seperate objects rather than a single object as part of an array of objects (there are other book objects in the returned JSON from my db the function

moving the key of an object into its value to create an array of objects

array.prototype.map arrays javascript object

I have an object I want to build a table out of however I need to use the value of the key as a part of the data displayed. My data looks like this: Ive tried using But this gives me nested arrays inside with the key as one value and an object as the second. I would like to

How can I render different sets of data into one React component multiple times?

array.prototype.map javascript json reactjs

I have data sets for recipes that I want to map onto cards that are on a carousel that I made. I am trying to do this the most efficient way with least amount of code, I am already achieving it by just creating multiple sliders for each set of recipes. However I want to make it so I only

Using map() or similar function to return the array data in the following format

array.prototype.map arrays foreach javascript

I have the following javascript array (I’m having fun with map() today) – I want to be able to return the pages data but have the page id as the key and the index for the position of that page within the pages array as the value. What am I doing wrong? Expected output Here is a stackblitz to the

How to add a class name in every row without effect the rest of the rows?

array.prototype.map class-names javascript jsx reactjs

How to add a class name in every row without effect the rest of the rows Answer The problem here is that when you say the state is false; it is assuming the state is false for the whole component. It doesn’t update the row but the whole component. So, at first, you need to add a deleted property that

Why do Material UI tabs stop working when I use a .map to populate the content dynamically instead of hard coding?

array.prototype.map javascript material-ui reactjs state

I have implemented Material UI’s tabs successfully by hard-coding the content, but when I tried to make a my hard coded tabs with a .map function to populate the content from a data source (simple json), it no longer works. Can anyone see why? The only change I made was to the MyTabs component below whe…