1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
|
<script lang="ts">
import {
Presentation,
Slide,
FitText,
Step,
Notes,
Media,
Code
} from '@components'
import { signal } from '@motion'
import StateNotes from "./notes/state.notes.svelte"
const circle = signal(
{ x: 0, y: 200, r: 80, fill: '#00ffff' },
{ duration: 2000 }
)
async function animate() {
await circle.to({ x: 400, fill: '#ffff00' }, { delay: 600 })
await circle.to({ x: 0, fill: '#00ffff' }, { delay: 300 })
}
function resetAnimation() {
circle.reset()
}
</script>
<Presentation>
<Slide animate>
<p class="font-bold text-8xl text-pink-700">React Builtin Hooks</p>
</Slide>
<!-- <Slide on:in={animate} on:out={resetAnimation} animate>
<p class="font-bold text-6xl">React Builtin Hooks</p>
<div>
<ul>
<li>useState()</li>
</ul>
</div>
</Slide> -->
<Slide on:in={animate} animate>
<p class="font-bold text-6xl mb-4 text-pink-700">React Builtin Hooks</p>
<ul class="mx-auto w-[200px] list-disc">
<Step>
<li>useState()</li>
</Step>
<Step>
<li>useEffect()</li>
</Step>
<Step>
<li>useContext()</li>
</Step>
<Step>
<li>useReducer()</li>
</Step>
<Step>
<li>useRef()</li>
</Step>
<Step>
<li>useMemo()</li>
</Step>
<Step>
<li>useCallback()</li>
</Step>
</ul>
</Slide>
<Slide on:in={animate} animate>
<p class="font-bold text-6xl mb-4 text-pink-700">What is a State?</p>
<Notes>
<ul>
<li>
State is something which holds the info or details about a Component's State at a TIME
</li>
<li>
It can change over time.
</li>
<li>
Whenever the state changes the COMPONENT attached to it re-renders
</li>
</ul>
</Notes>
</Slide>
<Slide on:in={animate} animate>
<p class="font-bold text-6xl mb-4 text-pink-700">useState()</p>
<div class="mx-auto w-[800px]">
<Code lang="js" lines="3">
{`
import React, {useState} from 'react';
const [value, setValue] = useState(null);
`}
</Code>
</div>
<StateNotes></StateNotes>
</Slide>
<Slide on:in={animate} animate>
<p class="font-bold text-6xl mb-4 text-pink-700">useState()</p>
<div class="mx-auto w-[800px]">
<Code lang="js" lines="3-6">
{`
import React, {useState} from 'react';
const [value, setValue] = useState({
id: 12,
name: "YouName"
})
`}
</Code>
</div>
<StateNotes></StateNotes>
</Slide>
<Slide on:in={animate} animate>
<p class="font-bold text-6xl mb-4 text-pink-700">useState()</p>
<div class="mx-auto">
<Code lang="js" lines="7|3-5|3-7">
{`
import React, {useState} from 'react';
function calculateValue() {
return Math.sqrt(64);
}
const [value, setValue] = useState(calculateValue());
`}
</Code>
</div>
<StateNotes></StateNotes>
</Slide>
<Slide on:in={animate} animate>
<p class="font-bold text-6xl mb-4 text-yellow-500">Side Effects</p>
<Media
class="h-[600px] w-full"
src="https://giphy.com/embed/39sYm1hvWRPN3NxHdI"
type="iframe"
>
</Media>
<Notes>
<ul>
<li>
Something which is outside the scope of REACT
<ul>
<li>
Calling AJAX requests
</li>
<li>
Calling Web API stuffs (document.get...)
</li>
<li>
localStorage etc...
</li>
<li>
setTimeout, setInterval
</li>
</ul>
</li>
<li>
Everything which is not part of React Library
</li>
<li>
Fun Fact - What happens if you call setTimeout without any arguments
<ul>
<li>
Executes outside the execution queue
</li>
</ul>
</li>
</ul>
</Notes>
</Slide>
<Slide on:in={animate} animate>
<p class="font-bold text-6xl mb-4 text-yellow-500">useEffect</p>
<div class="mx-auto">
<Code lang="js">
{`
useEffect(() => {
document.title = "Hey There, I'm from useEffect"
})
`}
</Code>
</div>
</Slide>
<Slide on:in={animate} animate>
<p class="font-bold text-6xl mb-4 text-yellow-500">useEffect</p>
<div class="mx-auto">
<Code lang="js" lines="3-4">
{`
useEffect(() => {
document.title = "Hey There, I'm from useEffect"
}) ← No Arguments means this will be called each time
this component re-renders
`}
</Code>
</div>
</Slide>
<Slide on:in={animate} animate>
<p class="font-bold text-6xl mb-4 text-yellow-500">useEffect</p>
<div class="mx-auto">
<Code lang="js" lines="3-4">
{`
useEffect(() => {
document.title = "Hey There, I'm from useEffect"
}, []) ← An empty array as an argument will run the
effect once the component is mounted
`}
</Code>
</div>
</Slide>
<Slide on:in={animate} animate>
<p class="font-bold text-6xl mb-4 text-yellow-500">useEffect</p>
<div class="mx-auto">
<Code lang="js" lines="3-4">
{`
useEffect(() => {
document.title = "Hey There, I'm from useEffect"
}, [prop1]) ← We can pass value
`}
</Code>
</div>
</Slide>
<Slide on:in={animate} animate>
<p class="font-bold text-6xl mb-4 text-yellow-500">useEffect</p>
<div class="mx-auto">
<Code lang="js" lines="3-4">
{`
useEffect(() => {
document.title = "Hey There, I'm from useEffect"
}, [prop1, state1]) ← Actually we can pass multiple-values
`}
</Code>
</div>
</Slide>
<Slide on:in={animate} animate>
<p class="font-bold text-6xl mb-4 text-yellow-500">useEffect</p>
<div class="mx-auto">
<Code lang="js" lines="3-4">
{`
useEffect(() => {
document.title = "Hey There, I'm from useEffect"
}, [prop1, state1]) ← This is called dependency list
`}
</Code>
</div>
</Slide>
<Slide on:in={animate} animate>
<p class="font-bold text-6xl mb-4 text-yellow-500">useEffect</p>
<div class="mx-auto">
<Code lang="js" lines="3-4">
{`
useEffect(() => {
document.title = "Hey There, I'm from useEffect"
}, [prop1, state1]) ← Effect will run whenever any
of the values on dependency list changes
`}
</Code>
</div>
</Slide>
<Slide on:in={animate} animate>
<p class="font-bold text-6xl mb-4 text-yellow-500">useEffect</p>
<div class="mx-auto">
<Code lang="js" lines="4-6">
{`
useEffect(() => {
document.title = "Hey There, I'm from useEffect";
return () => {
// Clean Up function 🧹
}
}, [prop1, state1]);
`}
</Code>
</div>
<Notes>
<ul>
<li>
You can do removeListeners, unsubscribes, reset layouts etc
</li>
<li>
This will be called by default when component unmouts.
</li>
</ul>
</Notes>
</Slide>
</Presentation>
|
