I read a list of items via AJAX and push it into a data Array: In the Vue devTools in Chrome I can see the updated data array, but the DOM list is still empty. The template: The activeSparepart Object is initialised here: Vue devTools shows the following: Answer I think the problem is that your activeSparepar…
Tag: arrays
Generating all possible true/false combinations
I want to create an array of all possible combinations of three variables that can either be true or false (i.e. 8 possible combinations). I am trying to create the cube in the top left corner at this image So the output should be something like I don’t know how to go through all possible truth values a…
How to get data from JSON array JavaScript
I want to push the data from piedatalist which contains two attributes, value and key and I want to pass to jqplot like this [key,value] to render the chart but it doesn’t work. Answer The JSON at the start can’t just be pasted into the code. It’s a string, but there are newlines which break…
JS – Get top 5 max elements from array
How can I get top 5 max elements from array of ints with the standard library of es2015? Thanks for help. Answer A solution in ES6 : Many others exist, ask if you need more
Add property to an array of objects
I have an array of objects as shown below I want to add one more property named Active to each element of this array of Objects. The final outcome should be as follows. Can someone please let me know how to achieve this. Answer You can use the forEach method to execute a provided function once for each elemen…
How to add key value pair to all objects in an array with lodash
I’m looping through an array of objects, each of which has a nested array of objects: I want to add the same key value pair to all of the objects within the nested array. In other words, all of the objects in item.values should have a new key value pair added, call it newpair. I’d like to clone it…
Declare an array in TypeScript
I’m having trouble either declaring or using a boolean array in Typescript, not sure which is wrong. I get an undefined error. Am I supposed to use JavaScript syntax or declare a new Array object? Which one of these is the correct way to create the array? How would I initialize all the values to be fals…
How to initialise array in react-native using es6?
I am trying to create empty array in react-native using es6. But while accessing it I get an error data not defined. Here is the code snippet which I am using to initialise the array. Here is the code through which I am trying to populate the array and at the same time logging it I think so there is
javascript – find unique objects in array based on multiple properties
I need to find unique objects from array based on 2 properties as below. When “class” and “fare” match, I need to pull out unique values and get them in results array. Source: Expected result: I looked over in SO and was able to find answer which is filtered based on one property (Crea…
Mapping Array in Javascript with sequential numbers
The following code: Creates the following Array: I just don’t understand why. I can’t find anything on the internet that explains this behavior. Does anyone know why this works the way it does? Perhaps a link to some documentation? Answer creates an array of length 10 with all elements being undef…