1. Todo.JSX file

My this blog is about how to build Todo list app with React JS. I am writing down the steps follow it i did it with my App in Reactjs also.

First of all in Todo.jsx file import react from react module. Then create fat arrow function with Todo name and write return key word in it then export this default Todo file below.

Now import Todo.Jsx file below.

Now add heading tag and input field and Add button and list in below image.

Now writing onChange event and then will use useState hooks in which i will have initial data with the name of “useState( )” and “listofinput” is our current data and “setlistofinput” is our updated data. Then i will define onChange event with the name of “itemEvent” in fat arrow function and here i will write one of event object and will target the value. Then i will render listofinput in list.

Now i will call one of event which is onClick then i will give name to it “listofitems” then i will define “listofitems” with fat arrow function. After that if i want to change the state so i will again use useState hooks with “items” and empty array see in below image.

Now in map method return a list value with the name of “itemval” see in below image.

Now the rest part will describe here in listofitems fat arrow function there is “olditems” which will access the one of object or array. Then i will write return keyword and will add array and will write “. . . olditems” and then will access “listofinput” see below image

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