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15/2/2023 #45

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14/02/2023
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WasatchSudarshan Feb 14, 2023
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today 15/2/2023
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3 changes: 3 additions & 0 deletions README.md
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Expand Up @@ -33,3 +33,6 @@
14. Cart

#### React Router

3:47:00
4:47:38
17,107 changes: 17,084 additions & 23 deletions package-lock.json
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2 changes: 1 addition & 1 deletion package.json
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Expand Up @@ -12,7 +12,7 @@
"react-scripts": "3.4.3"
},
"scripts": {
"start": "react-scripts start",
"start": "react-scripts --openssl-legacy-provider start",
"build": "react-scripts build",
"test": "react-scripts test",
"eject": "react-scripts eject"
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12 changes: 7 additions & 5 deletions src/App.js
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@@ -1,10 +1,12 @@
import React from 'react'
import React from "react";
import Setup from "./tutorial/1-useState/setup/5-useState-counter";

function App() {
return (
<div className='container'>
<h2>Advanced Tutorial</h2>
<div className="container">
<Setup />
</div>
)
);
}

export default App
export default App;
16 changes: 14 additions & 2 deletions src/tutorial/1-useState/setup/1-error-example.js
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@@ -1,7 +1,19 @@
import React from 'react';
import React from "react";

const ErrorExample = () => {
return <h2>useState error example</h2>;
let title = "random title";
const handleClick = () => {
title = "hello people";
console.log(title);
};
return (
<React.Fragment>
<h2>{title}</h2>
<button type="button" className="btn" onClick={handleClick}>
change title
</button>
</React.Fragment>
);
};

export default ErrorExample;
24 changes: 22 additions & 2 deletions src/tutorial/1-useState/setup/2-useState-basics.js
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@@ -1,7 +1,27 @@
import React, { useState } from 'react';
import React, { useState } from "react";

const UseStateBasics = () => {
return <h2>useState basic example</h2>;
// console.log(useState);
// console.log(useState("hello world"));
// const value = useState(1)[0];
// const handler = useState(1)[1];
// console.log(value, handler);
const [text, setText] = useState("random title");
const handleClick = () => {
if (text === "random title") {
setText("hello world");
} else {
setText("random title");
}
};
return (
<React.Fragment>
<h1>{text}</h1>
<button className="btn" onClick={handleClick}>
change title
</button>
</React.Fragment>
);
};

export default UseStateBasics;
27 changes: 24 additions & 3 deletions src/tutorial/1-useState/setup/3-useState-array.js
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@@ -1,8 +1,29 @@
import React from 'react';
import { data } from '../../../data';
import React from "react";
import { data } from "../../../data";

const UseStateArray = () => {
return <h2>useState array example</h2>;
const [people, setPeople] = React.useState(data);
const removeItem = (id) => {
let newPeople = people.filter((person) => person.id !== id);
setPeople(newPeople);
};
return (
<>
{people.map((person) => {
// console.log(person);
const { id, name } = person;
return (
<div key={id} className="item">
<h4>{name}</h4>
<button onClick={() => removeItem(id)}>remove</button>
</div>
);
})}
<button className="btn" onClick={() => setPeople([])}>
clear items
</button>
</>
);
};

export default UseStateArray;
27 changes: 25 additions & 2 deletions src/tutorial/1-useState/setup/4-useState-object.js
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import React, { useState } from 'react';
import React, { useState } from "react";

const UseStateObject = () => {
return <h2>useState object example</h2>;
const [person, setPerson] = useState({
name: "peter",
age: 24,
message: "random message",
});
const [name, setName] = useState("peter");
const [age, setAge] = useState(24);
const [message, setMessage] = useState("random message");

// console.log(person);
const changeMessage = () => {
// setPerson({ ...person, message: "hello world" });
setMessage("hello world");
};
return (
<>
<h3>{name}</h3>
<h3>{age}</h3>
<h3>{message}</h3>
<button className="btn" onClick={changeMessage}>
change message
</button>
</>
);
};

export default UseStateObject;
43 changes: 41 additions & 2 deletions src/tutorial/1-useState/setup/5-useState-counter.js
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import React, { useState } from 'react';
import React, { useState } from "react";

const UseStateCounter = () => {
return <h2>useState counter example</h2>;
const [value, setValue] = useState(0);

const reset = () => {
setValue(0);
};

const complexIncrease = () => {
setTimeout(() => {
// setValue(value + 1);
setValue((prevState) => {
return prevState + 1;
});
}, 2000);
};

return (
<>
<section style={{ margin: "4rem 0" }}>
<h2>regular counter</h2>
<h1>{value}</h1>
<button className="btn" onClick={() => setValue(value - 1)}>
decrease
</button>
<button className="btn" onClick={reset}>
reset
</button>
<button className="btn" onClick={() => setValue(value + 1)}>
increase
</button>
</section>
<section style={{ margin: "4rem 0" }}>
<h2>more complex counter</h2>
<h1>{value}</h1>
<button className="btn" onClick={complexIncrease}>
{" "}
increase later{" "}
</button>
</section>
</>
);
};

export default UseStateCounter;