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Wcoder547Wcoder547
committedJun 21, 2024
advance portion start ...
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‎09_advance_One/index.html

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8" />
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<meta name="viewport" content="width=device-width, initial-scale=1.0" />
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<title>XMLHTTPREQUEST</title>
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</head>
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<style>
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body {
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background-color: #212121;
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color: #fff;
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}
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</style>
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<body>
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<h1>ajax programing</h1>
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</body>
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<script>
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//Notes
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// console and many api are not part of core js
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//document are also not part of core js
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// console.log is a debbuging tool of browser develpor tool..
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//yh console.log browser ka run time inject krta he .
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//v8 engine is js engine .. which is written in c++
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//in v8 api there is communication between js and c++
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// d8 folder must see line 104
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// console.log(XMLDocument);
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// console.log(XMLHttpRequest);
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const requestUrl = "https://api.github.com/users/hiteshchoudhary";
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const xhr = new XMLHttpRequest();
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xhr.open("GET", requestUrl);
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xhr.onreadystatechange = function () {
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console.log(xhr.readyState);
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if (xhr.readyState === 4) {
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const data = JSON.parse(this.responseText);
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console.log(typeof data); // string.. after json it will json
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console.log(data.followers);
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}
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};
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// console.log("HERE");
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xhr.send();
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</script>
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</html>

‎09_advance_One/promises.js

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// console.log("is js working");
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// fetch("https://something.com").then().catch().finally(); //Basic syntax
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// const promiseOne = new Promise(function (resolve, reject) {
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// //Do an async task
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// //DB calls ..conntect..send..recive ..inject CryptoGraphy Network Call
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// setTimeout(function () {
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// console.log("async task is completed ");
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// resolve();
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// }, 2000);
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// });
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// promiseOne.then(function () {
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// console.log("process is consumed");
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// });
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// new Promise(function (resolve, reject) {
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// setTimeout(function () {
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// console.log("async task 2");
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// resolve();
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// }, 1000);
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// }).then(function () {
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// console.log("async task 2 is resolved");
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// });
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// const promiseThree = new Promise(function (resolve, reject) {
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// setTimeout(function () {
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// resolve({
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// name: "waseem akram",
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// gmail: "malikwaseemshzad@gmail.com",
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// }); // in resolve parameter we can pass object ,fucntion and array ....
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// }, 1000);
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// });
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// promiseThree.then(function (user) {
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// // console.log(user);
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// // console.log(user.gmail);
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// });
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// const promiseFour = new Promise(function (resolve, reject) {
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// setTimeout(function () {
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// let error = false;
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// if (!error) {
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// resolve({ username: "wcoder547", password: "123" });
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// }
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// if (error) {
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// reject("Error,Something Went Wrong!!");
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// }
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// }, 1000);
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// });
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// promiseFour
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// .then(function (user) {
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// console.log(user);
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// return user.username;
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// })
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// .then((username) => {
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// console.log(username);
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// })
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// .catch(function (error) {
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// console.log(error);
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// })
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// .finally(() => console.log("The promise is resolved or rejected"));
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// const promiseFive = new Promise(function (resolve, reject) {
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// setTimeout(function () {
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// let error = true;
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// if (!error) {
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// resolve({ username: "wcoder547", password: "123" });
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// }
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// if (error) {
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// reject("Error,Something Went Wrong!!");
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// }
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// }, 1000);
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// });
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// async function consumePromiseFive() {
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// try {
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// const response = await promiseFive;
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// console.log(response);
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// } catch (error) {
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// console.log(error);
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// }
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// }
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// consumePromiseFive();
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// async function getAllUsers() {
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// try {
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// const response = await fetch("https://jsonplaceholder.typicode.com/users");
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// const data = await response.json();
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// console.log(data);
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// } catch (error) {
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// console.log(error);
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// }
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// }
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//getAllUsers();
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fetch("https://jsonplaceholder.typicode.com/users")
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.then(function (response) {
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return response.json();
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})
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.then(function (data) {
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console.log(data);
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})
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.catch(function (error) {
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console.log(error);
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});

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