I want to pick a random item from an array at random. Is the way to go, but as far as I know this will cause a Uniform distribution to occur which means that the average is (lowbound+upperbound)/2 translated to an array with 10 elements the lower bound is the first element and the upper bound is the last elem…
Tag: arrays
Javascript How to filter through nested array data
I have a search field which filters through an array when I’m typing. So far it works ok, but I cannot search within the “courses” array! How can I achieve this? The complete array looks like this: Here is my JS code so far, where I can search through all fields, except the “courses…
How do I access a JSON array in JavaScript
I have a PHP script to which I make an Ajax request, and most of it works okay, but I’m having trouble accessing an array in the data returned to the JavaScript function. So, the PHP has a bunch of regular variables, and one array. The array, $places, has four elements, which each have three values, as …
Parse two arrays to check each value JavaScript
So i have two lists. List A contains a list of all dates of a specified month. list B contains a sequence of 1 and 0´s. If i want to check if date from list A is equal to 1 or 0 corresponding to the position in list B, How should i approach this?. The idea is to check if
Random image from html on button click
I am trying to make a script that will take the images from one div element and put it to div rndmImage randomly on button click, I should see images when document is loaded, but the new div where images should go after click must be empty until click heapends. And I need only JavaScript, no jQuery, alse i ca…
I need a to get a value in a map so that its key that includes a value
I want to do something like: I’ve tried a bunch of stuff, like using Array.has() and Array.includes(), but I just can’t. I’m new here and in coding, so sorry if i messed something up or if the solution is absurdly easy. Answer Map Api doesn’t support anything of this sort out of the bo…
Create new Array using two Arrays Specific data and values
I want to create a new Array using two arrays. There is a itemTypeId i want to get itemTypeName match with itemTypeId. Expected Array I added below tried solution but its contain unwanted key-value pairs also. Attached screenshot of output. Answer You can create a Map object and map it with time complexity O(…
Javascript: Assign percentage of players a random role
Let’s say I have these two arrays I would like to populate roles with, let’s say 30% of ‘Good’ and 70% ‘Bad’ strings in a random order, but always 30% of ‘Good’ roles. I am currently running this scenario which randomly creates an array, but without the percent …
How to loop through complex JSON tree data?
Problem: I am given JSON tree data that looks something like below: The objective is to take the json object and its id and find matching object with id. let’s just assume its been parsed so it’s treated like an object. Basically, I don’t know how deeply each set of id and name is nested. So…
Conditional statement inside for(var key in object) Javascript
I have a json data with specific key as below: So, in order to iterate it, I use for method. The problem is how to make filters inside the for method, but only execute it once? In the above code, the functionx() executed 3 times, because once it’s true, it will loop through as many key as my object has.