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Add button disabled when no text in input field #84

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37 changes: 22 additions & 15 deletions TODO-LIST/src/components/Todo.jsx
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Original file line number Diff line number Diff line change
@@ -1,17 +1,24 @@
import React from 'react'
import React from "react";

const Todo = ({ todo,deleteTodo,moveUp,moveDown,total,index}) => {

return (
<div className='todo'>
<p className='text'>{todo.text}</p>
<div className='utils'>
<div className='go-up' style={{borderBottomColor:index === 0 ? 'grey' : '#1DA1F2'}} onClick={() => moveUp(todo.id)}></div>
<div className='go-down' style={{borderTopColor:index === total - 1 ? 'grey' : '#1DA1F2'}} onClick={() => moveDown(todo.id)}></div>
<div className='remove' onClick={() => deleteTodo(todo.id)}></div>
</div>
</div>
)
}
const Todo = ({ todo, deleteTodo, moveUp, moveDown, total, index }) => {
return (
<div className="todo">
<p className="text">{todo.text}</p>
<div className="utils">
<div
className="go-up"
style={{ borderBottomColor: index === 0 ? "grey" : "#1DA1F2" }}
onClick={() => moveUp(todo.id)}
></div>
<div
className="go-down"
style={{ borderTopColor: index === total - 1 ? "grey" : "#1DA1F2" }}
onClick={() => moveDown(todo.id)}
></div>
<div className="remove" onClick={() => deleteTodo(todo.id)}></div>
</div>
</div>
);
};

export default Todo
export default Todo;
149 changes: 90 additions & 59 deletions TODO-LIST/src/pages/Home.jsx
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Original file line number Diff line number Diff line change
@@ -1,75 +1,106 @@
import React,{useState,useEffect} from 'react'
import {nanoid} from 'nanoid'
import Todo from '../components/Todo'
import React, { useState, useEffect } from "react";
import { nanoid } from "nanoid";
import Todo from "../components/Todo";

const getTodos = () => {
let todos = localStorage.getItem('todos')
if (todos) {
return JSON.parse(todos)
}
return []
}
let todos = localStorage.getItem("todos");
if (todos) {
return JSON.parse(todos);
}
return [];
};

const Home = () => {
const [todos, setTodos] = useState(getTodos())
const [todo, setTodo] = useState('')
const [todos, setTodos] = useState(getTodos());
const [todo, setTodo] = useState("");

const addTodo = (e) => {
e.preventDefault()
if (todo && todos.findIndex(t => t.text === todo) === -1) {
setTodos(prev => [...prev, {id:nanoid(),text:todo}])
setTodo('')
}
const addTodo = (e) => {
e.preventDefault();
if (todo && todos.findIndex((t) => t.text === todo) === -1) {
setTodos((prev) => [...prev, { id: nanoid(), text: todo }]);
setTodo("");
}
};

const deleteTodo = (id) => {
setTodos(prev => prev.filter(t => t.id !== id))
}
const deleteTodo = (id) => {
setTodos((prev) => prev.filter((t) => t.id !== id));
};

const moveUp = (id) => {
let index = todos.findIndex(t => t.id === id)
if (index > 0) {
let temp = todos[index]
todos[index] = todos[index - 1]
todos[index - 1] = temp
setTodos([...todos])
}
const moveUp = (id) => {
let index = todos.findIndex((t) => t.id === id);
if (index > 0) {
let temp = todos[index];
todos[index] = todos[index - 1];
todos[index - 1] = temp;
setTodos([...todos]);
}
};

const moveDown = (id) => {
let index = todos.findIndex(t => t.id === id)
if (index < todos.length - 1) {
let temp = todos[index]
todos[index] = todos[index + 1]
todos[index + 1] = temp
setTodos([...todos])
}
const moveDown = (id) => {
let index = todos.findIndex((t) => t.id === id);
if (index < todos.length - 1) {
let temp = todos[index];
todos[index] = todos[index + 1];
todos[index + 1] = temp;
setTodos([...todos]);
}
useEffect(() => {
localStorage.setItem('todos', JSON.stringify(todos))
},[todos])
};

return (
<div className='home'>
<div className='container'>
<form className='todo-form' onSubmit={addTodo}>
<input type="text" placeholder='Add item...' value={todo} onChange={(e) => setTodo(e.target.value)}/>
<input type='button' onClick={addTodo} className='btn-addTodo' value='Add' />
</form>
{
todos.length? (
<div className='todo-list'>
{
todos.map((todo,index) => {
return <Todo key={todo.id} todo={todo} deleteTodo={deleteTodo} moveUp={moveUp} moveDown = {moveDown} total = {todos.length} index={index}/>
})
}
</div> ) : <p style={{textAlign:'center', marginTop:'10px', fontWeight:'bold'}}>No todo...</p>
useEffect(() => {
localStorage.setItem("todos", JSON.stringify(todos));
}, [todos]);

}
return (
<div className="home">
<div className="container">
<form className="todo-form" onSubmit={addTodo}>
<input
type="text"
placeholder="Add item..."
value={todo}
onChange={(e) => setTodo(e.target.value)}
/>
<input
type="button"
onClick={addTodo}
className="btn-addTodo"
value="Add"
style={{
backgroundColor: todo.trim() ? "#1DA1F2" : "grey",
color: "white",
cursor: todo.trim() ? "pointer" : "not-allowed",
}}
disabled={!todo.trim()}
/>
</form>
{todos.length ? (
<div className="todo-list">
{todos.map((todo, index) => (
<Todo
key={todo.id}
todo={todo}
deleteTodo={deleteTodo}
moveUp={moveUp}
moveDown={moveDown}
total={todos.length}
index={index}
/>
))}
</div>
) : (
<p
style={{
textAlign: "center",
marginTop: "10px",
fontWeight: "bold",
}}
>
No todo...
</p>
)}
</div>
</div>
)
}
);
};

export default Home
export default Home;