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Stack

Data-Structure | Linear Category Stack Code Example  // BluePrint || Static Thing class Stack { // LIFO = Last In Fast Out | (Linear) Data-Structure constructor() { // empty stack this.stack = []; } // add new data in stack, one by one add(data) { this.stack.push(data); } // remove data from stack remove() { // for checking, is stack empty or not... if (this.stack.length) { return this.stack.pop(); } } } // ######################################################## // ######################################################## // ######################################################## // Object Creating || Dynamic Thing // Create an object of Stack class const person = new Stack(); person.add('Sam'); person.add('Jon'); person.add('Ken'); person.add('Lee'); // total object calling [its not a good approach] c
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Get Your Geo Location

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  HTML + CSS + JavaScript <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Geo Location</title> <style> body { font-family: 'Courier New', Courier, monospace; } button { font-size: 18px; padding: 10px 5px; cursor: pointer; } </style> </head> <body> <div> <h3>Click the button to get your coordinates.</h3> <button onclick="getLocation()">Know Your Geo Location...</button> <h1>Latitude : <span id="lan"></span></h1> <h1>Longitude : <span id="lon"></span><
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React | State Toggling

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  if you are wondering How to toggle Boolean   state in react component, then maybe this little code snippet for you... Ingredients :  HTML CSS React *** Dependency :  Bootstrap (Only for button) command: npm start   import React, { useState } from 'react'; import 'bootstrap/dist/css/bootstrap.min.css'; const App = () => { const [isLoggedIn, setIsLoggedIn] = useState(true); //let isLoggedIn = true; <<<|<<< this approach not work... // Element Variable const buttonText = isLoggedIn ? 'Log Out' : 'Log In'; const classNameChange = isLoggedIn ? 'danger' : 'success' const toggleFunction = () => { //isLoggedIn = !isLoggedIn; <<<|<<< this approach not work... setIsLoggedIn(!isLoggedIn); } const style = { textAlign: 'center', marginTop: '20px', lineHeight: 5 }; return ( <div style={style}>
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