I have two arrays. I want to update array1 by getting array2 multiple value by matching on each array’s color value. I am using this to do the following code to do the work. Note for purposes of this question both array contents are fake data not my actual array data. The code does return expected results here. However, when
Tag: arrays
Array chain results in undefined
I have this array of strings, which is the result of a chain of array methods I’m implementing to a larger list. See the chain and array below: Now, when I apply the last method forEach(), which is supposed to turn the strings to lower case it prints undefined. Not sure why. see below the full chain. Any ideas why
How do I loop through similar key value pairs(a0,a1,a2) in JavaScript object and generate a new array without the number in the key(a)?
What I have 1.keys: similar key name(such as a0,a1,a2) 2.obj: a lot of similar key-value pairs in one object 3.number: the times similar key-value pairs looped in obj1) 4.arr: a array without the number in the key(only keep “a”, no “a0″,”a1″,”a2”) p.s. “aa”,”bb”,”cc” are examples, the value can be anything What I want How can I get array? Answer
How to compare an array of objects with an array of strings?
How to compare these arrays? I want to compare and get a result like the below. Array of string Array of object As you can see there is no Sliders categoryName in the array of string. I expected the result should be another array of objects. As the following Thanks! Answer You can use .filter as follows:
How to push new elements in an array as they increase in number?
I have a gird with a few nodes. As I move my mouse on the gird, the values of row and col change. For example: this code returns this on the console: These are the coordinates. The question is: How do I store these values in an array as they grow? I tried to do it with the push function
Javascript sort array of objects using array of priority
I have this array of objects: I want to sort these array of objects using a priority array of a specific key, say [“live”, “upcoming”, “completed”] for status, meaning all live events come first, followed by upcoming followed by completed. Answers all over the internet seem like you can only sort array objects using keys as ascending or descending. How
javascript: return every possible pairs in array
the title explains it all somehow I’d like to use the method “Combination” that math has, this is the Wikipedia page to be clear: https://en.wikipedia.org/wiki/Combination I have already found the solution with two loops, I want to do it in one loop example: Answer You can use Array.flatMap() to iterate the array, and Array.map() to iterate all items after the
Browser Extension’s creating dynamic buttons with dynamic links
I’m trying to create a browser extension popup (in JS) that creates a number of buttons with links that open up different webpages. The function takes a number of parameters, the main one being b_link which is an array of URL’s to the website. For some reason, only the last URL in array is applied to all of the buttons
Populate using v-for loop in VueJS
I am new to VueJS and I just figure out how to populate Select Options box using v-for loop. Here is the list I have. This is our desired output. Answer Luckily for you, Vue can loop through the properties in an Object as described in v-for with an Object. I’ve also included a snippet below which should help you
Merge 2 objects in an array where the values are an array
I am trying to merge values in 2 objects from the same array. The objects in this case are similar and the values I want to merge are arrays(Set) Expected Output My Code Output Gotten How can I get the expected output (ES6 would also be preferred) Answer Try this