I have a complex json file that I have to handle with javascript to make it hierarchical, in order to later build a tree. Every entry of the json has : id : a unique id,  parentId : the id of the parent node (which is 0 if the node is a root of the...
I've noticed the order of elements in a JSON object not being the original order.  What about the elements of JSON lists? Is their order maintained?...
In SQL we can see if a string is in a list like so:  Column IN ('a', 'b', 'c')   What's a good way to do this in JavaScript? It's so clunky to do this:  if (expression1 || expression2 || str === 'a' || str ===...
I am looking at this exercise from the book Eloquent Javascript, Chapter 4 - A List for quite some time and I'm trying to understand how this particular function works:   function arrayToList(array) {   let list = null;   for (let i = array.lengt...
In my previous Quesion:  Extracting data from a function chain without arrays  @Aadit M Shah gave me astonishing solution as follows:  https://stackoverflow.com/a/51420884/6440264  Given an expression like A(a)(b)(f) where f is a function, it's i...
can anyone help me figure what i did wrong in my code?  Cause I wanna created a function which can help me turn all the array data into list and print the list out.  Original Instructions ****Write a function arrayToList that builds up a data structu...
Let's say I have a list of items under a div or UL.  I want to take all the list items with the same title attribute and wrap a UL around it.  The next part though is that I want that UL to be under the LI with the same attribute.  So, I'm tr...
If I have an unordered list like  <ul id="list"> <li>Helo World-1</li> <li>Helo World-2</li> <li>Helo World-3</li> </ul>   I want to add a sublist item to it dynamically. Is there any method in...
I'm trying to wrap a range of children elements in div in order to manipulate them in groups; trying to position each group in a different place. The scenario is that I have a list randomly generating li tags and no matter how many appear I need...
I am trying draw a stacked bar chart but bar itsels is not shown. Dont know why?. let me explain what I am doing. I have stored  values in 3 columns of the  database  then using list(collections) i am able to display it on my table using jsp. Now i h...

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