![]() But Make sure not to use this JSON. ![]() Instead, all the existing DOM-elements are re-used and only the additional element is created. For example, if a element is added to the array, it is not re-rendering the whole list. I'm learning Typescript and found different ways to create an object which conforms to the interface type but not all might have the type safe guarantee as you expect. and this will make a new copy of the complete object to the new variable. How ngFor is optimizing To reduce DOM-manipulation to a bare minimum, angulars ngFor directive is heavily optimized. When the object was printed, it only showed the set attributes. ![]() It is a compile time construct hence it will not have generated code as type checking in Typescript is only done at compile time rather than runtime. angular filter javascript pipe typescript Photo by Marc Babin on Unsplash We mostly do work with the larger data. Thus an empty object was initialized of the type Animal, and the attributes legs and name were set. NgFor only supports binding to Iterables such as Arrays. Interface in Typescript is used to tell the compiler what the shape of the JS object should look like. core.js:5980 ERROR Error: Cannot find a differ supporting object object Object of type object.
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