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annotate react_games/src/TODO/main.tsx @ 71:75de5903355c

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Giagantic changes that update Dowa library to be more align with stb style array and hashmap. Updated Seobeo to be caching on server side instead of file level caching. Deleted bunch of things I don't really use.
author June Park <parkjune1995@gmail.com>
date Sun, 28 Dec 2025 20:34:22 -0800
parents fb9bcd3145cb
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fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
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1 /*
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2 * đź“ť React Todo App Challenge (1 Hour)
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3 * âť“Problem
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4 * Build a simple Todo application using React. The app should allow users to:
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5 *
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6 * - Add a new todo item.
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7 *
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8 * - Mark a todo as completed.
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9 *
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
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10 * - Delete a todo.
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11 *
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
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12 * Filter todos by:
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13 *
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14 * - All
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15 * - Active
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16 * - Completed
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17 *
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18 * đź’ˇBonus (if time allows)
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19 * Persist todos in localStorage.
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20 *
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21 * Use React Context + useReducer to manage global state.
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22 *
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23 * Add a clear completed button.
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24 *
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25 * 📦 Requirements
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26 * Use functional components + hooks only.
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27 *
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28 *
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29 *
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30 * No styling is required, but if you have time, make it readable.
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31 *
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32 * Don’t use external state management libraries like Redux.
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33 *
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34 * Components
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35 *
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36 * TODOs
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37 * Inputs
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38 * buttons filtering
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39 *
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40 * TODO States
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41 * - Active
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42 * - Completed
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43 * - Deleted
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44 */
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45 import React, { CSSProperties, Dispatch, InputHTMLAttributes, memo, useMemo, useRef, useState } from "react";
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46
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47 enum TodoState {
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48 ACTIVE="active",
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49 COMPLETED="completed",
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50 DELETED="deleted",
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51 }
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52
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53 interface Todo {
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54 id: string;
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55 value: string;
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56 state: TodoState;
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57 }
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58
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59 const INITIAL_TODOS: Todo[] = [
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60 {id: "1", value: "I want to buy pizza", state: TodoState.ACTIVE},
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61 {id: "2", value: "I want to buy pizza completed", state: TodoState.COMPLETED},
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62 {id: "3", value: "I want to buy pizza deleted", state: TodoState.DELETED},
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63 ]
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64
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65 function changeStateTodo(
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66 todoId: string,
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67 todoState: TodoState,
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68 setTodoCallback: Dispatch<React.SetStateAction<Todo[]>>,
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69 ): void {
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70 setTodoCallback(
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71 (todos: Todo[]) => todos.map((todo: Todo) => {
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72 if (todo.id === todoId) {
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73 return {
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74 ...todo,
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75 state: todoState
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76 };
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77 }
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78 return todo;
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79 })
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80 )
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81 }
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82
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83 interface TodoComponentProp {
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84 todo: Todo;
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85 setTodos: Dispatch<React.SetStateAction<Todo[]>>;
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86 }
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87
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88 const TodoComponent = memo(({todo, setTodos}: TodoComponentProp) => {
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89 const tdStyle: CSSProperties = {
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90 padding: "0.5rem",
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91 borderBottom: "1px solid #ddd",
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92 };
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93
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94 const rowStyle: CSSProperties = {
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95 backgroundColor: "#fff",
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96 };
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97
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98 return (
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99 <tr key={todo.id} style={rowStyle}>
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100 <td style={tdStyle}>{todo.value}</td>
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101 <td style={tdStyle}>
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102 <span style={{ textTransform: "capitalize" }}>{todo.state}</span>
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103 </td>
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104 <td style={tdStyle}>
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105 {todo.state !== TodoState.COMPLETED && (
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106 <button onClick={() => changeStateTodo(todo.id, TodoState.COMPLETED, setTodos)}>
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107 âś…
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108 </button>
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109 )}
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110 {todo.state !== TodoState.DELETED && (
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111 <button onClick={() => changeStateTodo(todo.id, TodoState.DELETED, setTodos)}>
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112 🗑️
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113 </button>
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114 )}
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115 {todo.state !== TodoState.ACTIVE && (
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116 <button onClick={() => changeStateTodo(todo.id, TodoState.ACTIVE, setTodos)}>
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117 🟢
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118 </button>
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119 )}
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120 </td>
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121 </tr>
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122 )
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123 })
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124
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125 const TODO = () => {
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126 const [todos, setTodos] = useState<Todo[]>(INITIAL_TODOS);
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127 const [todoFilter, setTodoFilters] = useState<TodoState | null>(null);
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128 const inputRef = useRef<HTMLInputElement>(null);
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129
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130 const style: CSSProperties = {
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MrJuneJune <me@mrjunejune.com>
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131 display: "flex",
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132 justifyContent: "center",
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MrJuneJune <me@mrjunejune.com>
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133 alignItems: "center",
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MrJuneJune <me@mrjunejune.com>
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134 height: "100vh",
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MrJuneJune <me@mrjunejune.com>
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135 width: "100vw",
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MrJuneJune <me@mrjunejune.com>
parents:
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136 }
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
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137
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MrJuneJune <me@mrjunejune.com>
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138 const filterTodos = useMemo(() => {
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MrJuneJune <me@mrjunejune.com>
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139 return todoFilter ? todos.filter((t) => t.state === todoFilter) : todos;
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MrJuneJune <me@mrjunejune.com>
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140 }, [todos, todoFilter]);
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MrJuneJune <me@mrjunejune.com>
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141
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
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142 const handleCreateTodo = (event: React.FormEvent) => {
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
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143 event.preventDefault();
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
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144 const input = inputRef.current;
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
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145 if (!input || !input.value.trim()) return;
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
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146
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
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147 const newValue = input.value.trim();
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MrJuneJune <me@mrjunejune.com>
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148 setTodos(
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
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149 (todos) => [
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
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150 ...todos,
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
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151 {
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
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152 value: newValue,
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
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153 id: crypto.randomUUID(),
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
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154 state: TodoState.ACTIVE
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
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155 }
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
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156 ]
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
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157 );
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
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158 input.value = "";
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
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159 }
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
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160
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
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161 const thStyle: CSSProperties = {
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
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162 textAlign: "left",
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
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163 padding: "0.5rem",
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
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164 backgroundColor: "#f0f0f0",
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MrJuneJune <me@mrjunejune.com>
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165 borderBottom: "2px solid #ddd",
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MrJuneJune <me@mrjunejune.com>
parents:
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166 };
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
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167
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
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168 const buttonStyle = (isActive: boolean): CSSProperties => {
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
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169 return {
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
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170 padding: "0.5rem 1rem",
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
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171 borderRadius: "6px",
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
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172 border: "1px solid #ccc",
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
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173 backgroundColor: isActive ? "#efefef" : "#fff",
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
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174 marginBottom: "1rem",
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
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175 }
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
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176 };
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
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177
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
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178 return (
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
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179 <div style={style}>
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
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180 <div>
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
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181 <h1> TODOs: </h1>
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
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182 <h2> Filter by: {todoFilter != null ? todoFilter : "All"} </h2>
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
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183 <div style={{display: "flex", width: "100%", justifyContent: "space-between"}}>
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
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184 <button style={buttonStyle(todoFilter===TodoState.ACTIVE)} onClick={() => setTodoFilters(TodoState.ACTIVE)}> Active </button>
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
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185 <button style={buttonStyle(todoFilter===TodoState.DELETED)} onClick={() => setTodoFilters(TodoState.DELETED)}> Deleted </button>
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
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186 <button style={buttonStyle(todoFilter===TodoState.COMPLETED)} onClick={() => setTodoFilters(TodoState.COMPLETED)}> Completed </button>
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
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187 <button style={buttonStyle(todoFilter===null)} onClick={() => setTodoFilters(null)}> ALL </button>
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
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188 </div>
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
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189 <table style={{ borderCollapse: "collapse", width: "100%", marginBottom: "1rem" }}>
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
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190 <thead>
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
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191 <tr>
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
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192 <th style={thStyle}>Task</th>
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193 <th style={thStyle}>Status</th>
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194 <th style={thStyle}>Action</th>
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MrJuneJune <me@mrjunejune.com>
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195 </tr>
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
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196 </thead>
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
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197 <tbody>
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
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198 {
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
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199 filterTodos.map((todo) => (
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200 <TodoComponent key={todo.id} todo={todo} setTodos={setTodos}/>
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
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201 ))
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
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202 }
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
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203 </tbody>
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
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204 </table>
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
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205 <form onSubmit={handleCreateTodo}>
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
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206 <input ref={inputRef} placeholder={"Add a new todo..."} style={{
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
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207 padding: "0.5rem",
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
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208 border: "1px solid #ccc",
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
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209 borderRadius: "4px",
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
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210 width: "300px",
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
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211 marginRight: "0.5rem",
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
212 }}
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
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213 />
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
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214 <button type="submit" style={{ padding: "0.5rem 1rem", borderRadius: "4px" }}>Add</button>
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
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215 </form>
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
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216 </div>
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
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217 </div>
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
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218 );
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
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219 }
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
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220
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
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221 export {
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
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222 TODO
fb9bcd3145cb [ReactGames] Few games I made using react just to practice few things.
MrJuneJune <me@mrjunejune.com>
parents:
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223 }