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How to check if nested object is descendant of another object not using jQuery

By : fks
Date : October 17 2020, 01:08 AM
wish helps you You can create recursive function that will use forEach loop on arrays and also check if first parameter exists after second parameter is seen on any level.
code :
var object = {"children":[{"name":"a","id":1,"children":[{"name":"b","id":2,"children":[{"name":"c","id":3,"children":[]},{"name":"cc","id":4,"children":[]}]},{"name":"ba","id":6,"children":[{"name":"c","id":8,"children":[]},{"name":"cd","id":7,"children":[]}]}]},{"name":"bb","id":3,"children":[]}]}

function isThisDescendant(a, b) {
  var r = false;

  function f(a, b, data = object, p = false) {
    if (Array.isArray(data)) {
      data.forEach(function(o) {
        if (p && a == o.id) r = true;
        else f(a, b, o.children, !p ? b == o.id : p)
    } else f(a, b, data.children, p)
  f(a, b)
  return r

console.log(isThisDescendant(7, 1)) //true
console.log(isThisDescendant(1, 7)) //false
console.log(isThisDescendant(7, 3)) //false
console.log(isThisDescendant(3, 2)) //true

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jQuery object descendant filtering

By : Hugh Jorgan
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , Assuming I have a tree structure , use $myUL.find('li>input:checked')

Check if an object exists with a property set to a particular value in a nested object (array of objects)

By : nwf
Date : March 29 2020, 07:55 AM
will help you I'm trying to construct a JSON object from a data source which should look something like this: , You can use JQuery's filter() method:
code :
$('.sourceData table tbody tr').each(function(i,row) {
    var fruitName = $.trim($(row).find('td:nth-child(1)').text()); 
    var type = $.trim($(row).find('td:nth-child(2)').text());

    if ($(allProduce).filter(function(index, object){return object.name == fruitName;}).length == 0) {
       allProduce.push({"name":fruitName, "type": type});


How to check for the existence of a null object in a nested object in JavaScript?

By : Michael Croatto
Date : March 29 2020, 07:55 AM
Any of those help Say for example if I have a 3 level deep javascript object ,
How can I write a function that determines if it is nested?

How to check whether an object is a descendant of a given class in Haxe?

By : Manohar Kumar
Date : March 29 2020, 07:55 AM
this one helps. Have you tried Std.is()?
code :
if (Std.is(system, IInitializeSystem)) {
    _initializeSystems.add(cast system);

if (Std.is(system, IExecuteSystem)) {
    _executeSystems.add(cast system);

// etc

C++ check if object is a descendant of a given superclass

By : Yenny Kurniawati
Date : March 29 2020, 07:55 AM
To fix this issue I have a pointer to an object, I want to know if that object is either of type of a given class or of type that is a subclass of the given class in C++. , Use dynamic_cast:
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