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Commit 0207052

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chapter 2.3 and 2.4 uploaded
chapter 2.3 and 2.4 uploaded
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‎README.md‎

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@@ -332,12 +332,162 @@ There are a bunch of other libraries, methods, and ways to make AJAX calls. Thir
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2.3. XMLHttpRequest-loading JSON data
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> **Syntax & Example**: `2.3-loading-json-data/animals1.json`
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```json
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[
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{
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"name": "Meowsy1",
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"species": "cat",
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"foods": {
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"likes": [
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"tuna",
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"catnip"
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],
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"dislikes": [
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"ham",
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"zucchini"
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]
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}
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},
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{
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"name": "Barky1",
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"species": "dog",
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"foods": {
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"likes": [
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"bones",
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"carrots"
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],
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"dislikes": [
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"tuna"
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]
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}
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},
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{
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"name": "Purrpaws1",
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"species": "cat",
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"foods": {
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"likes": [
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"mice"
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],
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"dislikes": [
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"cookies"
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]
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}
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}
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]
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```
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<hr/>
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> **Syntax & Example**: `2.3-loading-json-data.html`
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```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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<meta http-equiv="X-UA-Compatible" content="ie=edge">
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<title>loading json data</title>
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<script type="text/javascript" src="2.3-loading-json-data.js"></script>
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</head>
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<body>
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</body>
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</html>
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```
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<hr/>
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> **Syntax & Example**: `2.3-loading-json-data.js`
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```js
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console.log('2.3-loading-json-data.js loaded');
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var xhr = new XMLHttpRequest();
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xhr.open('GET','animals1.json');
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xhr.onload = function() {
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let results = xhr.responseText;
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console.log('string type of json:',results);
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document.write('<h1>Load JSON data from .json file:</h1>');
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document.write(results);
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results = JSON.parse(xhr.responseText);
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console.log('json object after parsing:',results);
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document.write('<h2>Load 0 th animal details:</h2>');
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var animal0 = results[0].name;
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document.write('Name : ' + animal0);
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}
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xhr.send();
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```
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> **Note**: *Its advisable to use local web-server like XAMP, MAMP or node/npm server utilities-packages like serve, http-server, static, local-web-server to avoid any - **CORS policy: Cross-origin requests errors***
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2.4. XMLHttpRequest-loading web API data
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JSON Web API path: https://learnwebcode.github.io/json-example/animals-1.json
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> **Syntax & Example**: `1.6.1-employee.json`
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```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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<meta http-equiv="X-UA-Compatible" content="ie=edge">
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<title>loading web api data</title>
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<script type="text/javascript" src="2.4-loading-json-web-api-data.js"></script>
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</head>
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<body>
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</body>
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</html>
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```
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<hr/>
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> **Syntax & Example**: `2.4-loading-json-web-api-data.js`
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```js
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console.log('2.4-loading-json-web-api-data.js loaded');
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var xhr = new XMLHttpRequest();
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xhr.open('GET','https://learnwebcode.github.io/json-example/animals-1.json');
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xhr.onload = function() {
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let results = xhr.responseText;
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console.log('string type of json:',results);
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document.write('<h1>Load JSON data from .json file:</h1>');
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document.write(results);
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results = JSON.parse(xhr.responseText);
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console.log('json object after parsing:',results);
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document.write('<h2>Load 1 st animal details:</h2>');
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var animal1 = results[1].name;
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document.write('Name : ' + animal1);
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}
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xhr.send();
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```
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2.5. GET vs POST method
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