Master React, Quick Code tutorial. Part 6 about react-only-intern-23

[sanchit94]

@atherdon So this chapter adds to the topic of state discussed in previous chapter. It talks about setState function. setState is the only way to update state of the component. setState function expects the state to be set and its value as arguments in form of an object. setState changes the state of the component, by using the state key value pair provided in the argument which results in re-rendering of the virtual DOM. This chapter also explains why we cannot use Array.prototype.push method to update the state, as it will update the array but not return a value to the setState method. So we use the spread operator here, so that a new and updated array is returned.

[atherdon]

move to the next chapter while i'm reviewing the current progress