and Object objects! stringify({}) -> [object Object] That's because the constructor function is called Object (with a capital "O"), and the term "object" (with small "o") refers to the structural nature …

May 11, 2013 · Here I'm creating a JavaScript object and converting it to a JSON string, but JSON.stringify returns " [object Object]" in this case, instead of displaying the contents of the …

I am receiving this error and I'm not sure what it means? Object reference not set to an instance of an object.

Apr 8, 2009 · I have an object x. I'd like to copy it as object y, such that changes to y do not modify x. I realized that copying objects derived from built-in JavaScript objects will result in …

Jan 17, 2013 · The Object.entries () method returns an array of a given object's own enumerable property [key, value] So you can iterate over the Object and have key and value for each of …

HTML5 defines several embedded content elements, which, from a bird's-eye view, seem to be very similar to the point of being largely identical. What is the actual difference between iframe, …

Jun 21, 2011 · It looks strange to be calling a method on an object to check if it is null. Without knowing it was an extension method you would think it would throw a null reference exception.

Object.keys(null) Object.assign(window.UndefinedVariable, {}) As that is usually by mistake, the solution is to check your code and fix the null/undefined condition so that the function either …

May 30, 2015 · There's also object equivalence, which isn't provided by the language or runtime itself, but is usually expressed as: The objects have the same prototype, same properties, and …

Object.assign has it's own unique aspects (that are well known to most experienced JS devs) that should be considered when writing TypeScript. It can be used in a mutable fashion, or an …