Consider: if (someVar.hasOwnProperty('someProperty') ) { // Do something(); } else { // Do somethingElse(); } What is the right use/explanation of hasOwnProperty('someProperty')? Why can't we si...

Here is my JavaScript code so far: var linkElement = document.getElementById("BackButton"); var loc_array = document.location.href.split('/'); var newT = document.createTextNode(unescape(capWords(...

I have an array contains const data = ['a', 'b', 'c', 'd']; how to find the last element, result should be 'd'

We currently are in march 2023 and I am looking for a way to make my class decorators work the right way, with no warning from the cli. Here my simple code : function MyDecorator(myConstructor: new...

Is it possible to create private properties in ES6 classes? Here's an example. How can I prevent access to instance.property? class Something { constructor(){ this.property = "test"; } } var ...