Describe the life cycle of any task in front end development
The delete operator is used to delete the property of an object. Here, x is an object which has the property foo, and as it is a self-invoking function, we will delete the foo property from object x. After doing so, when we try to reference a deleted property foo, the result is undefined. The delete operator is used to delete properties from an object. Undeclared variables are those that do not exist in a program and are not declared. If the program tries to read the value of an undeclared variable, then a runtime error is encountered.
- This returns both the value and the setter function in an array.
- It contains directives, which are HTML attributes that allow you to extend HTML.
- Lisp was among the first languages to support functional programming, and was heavily inspired by lambda calculus.