I'd like to start using ES6 Map instead of JS objects but I'm being held back because I can't figure out how to JSON.stringify() a Map.  My keys are guaranteed to be strings and my values will always be listed.  Do I really have to writ...

I just read this question: are there dictionaries in javascript like python?  One of the answers said that you can use JavaScript objects like Python dictionaries. Is that true? What is the performance of a key lookup in an object? Is it O(1)? Is a...

var a = new Map([[ 'a', 1 ]]); a.get('a') // 1  var forStorageSomewhere = JSON.stringify(a); // Store, in my case, in localStorage.  // Later: var a = JSON.parse(forStorageSomewhere); a.get('a') // TypeError: undefined is no...

Here is my dictionary:  const dict = {   "x" : 1,   "y" : 6,   "z" : 9,   "a" : 5,   "b" : 7,   "c" : 11,   "d" : 17,   "t" : 3 };   I need a way to sort my dict dictionary from the leas...

To illustrate the problem, consider the following simple object  function Key( val ) {   this._val = val; }   Now I create a ES6 Map instance and feed one entry into it like this  var map = new Map(),     key1 = new Key( 'key' );  map.set( ke...

Consider the following common JavaScript construct  var ages = people.map(person => person.age);  Giving the desired result, which is an array of ages.  What is the equivalent of this in C#? Please include a simple example. The documentation indic...

I recently asked this question, but after some of the responses and some research, i wanted to change what i was actually asking.  i have seen a number of blog posts about sending associative arrays from javascript to C# controller action but i want...

I plan to build an online map for markers (pins) of a game and I don't manage to set the correct latitude of my markers.  Original map is a square of 2048*2048px  Then I got markers (many thousands)  Map coordinates are set with a x, y notation f...

[This is first question on SO, so apologize me for any mistake]  I'm trying to save a Map, like the one below, in a cookie.  var myMap = new Map(); myMap.set("k1", {     a1: "...",     a2: "...",     a3: "..." });...

I have this requirement. Depending on the number of arguments passed in the function, I need to create that many entries in my map. Say I have a function myfunc1(a,b,c) , I need to have a map with the keys as "a","b" and "c" a...