SlideShare a Scribd company logo
Course instructor : Laurence Svekis
- Over 300 courses in technology and
web applications.
- 20 years of JavaScript web
programming experience
- 500,000+ students across multiple
platforms
- Digital instructor since 2002
READY TO HELP YOU LEARN and
ANSWER ANY questions you may
have.
●
●
●
●
●
●
<html>
<head>
<title>Tester</title>
</head>
<body>
<h1>DevTools Course</h1>
<div>Welcome to the Page</div>
<input value="Laurence">
<script>
var a = 100;
var el = document.querySelector('h1');
var friends = ['Laurence','John','Susan'];
console.log('hello');
</script>
</body>
</html>
let people;
fetch('https://randomuser.me/api/?results=10').then((resp) =>
resp.json()).then(function (data) {
console.log(data.results);
people = data.results;
console.log(people);
})
let div = document.createElement('h1');
div.textContent = new Date();
document.body.appendChild(div);
var images = $$('img');
for (each in images) {
console.log(images[each].src);
}
document.querySelector('body').textContent = "Hello World"
<link href="https://fonts.googleapis.com/css?family=Gayathri&display=swap"
rel="stylesheet">
<style>
h1 {
font-family: 'Gayathri', sans-serif;
}
</style>
●
●
●
●
●
let people;
fetch('https://randomuser.me/api/?results=10').then((resp) =>
resp.json()).then(function (data) {
console.log(data.results);
people = data.results;
console.log(people);
})
let div = document.createElement('h1');
div.textContent = new Date();
document.body.appendChild(div);
localStorage.setItem('course', 'Local DevTools');
let val1 = localStorage.getItem('course');
console.log(val1);
//localStorage.removeItem('course');
sessionStorage.setItem('course', 'Session DevTools');
let val2 = sessionStorage.getItem('course');
console.log(val2);
//sessionStorage.removeItem('course');
//sessionStorage.clear();
document.cookie = "course=Cookie DevTools";
console.log(document.cookie);
const friends = ['Laurence', 'John', 'Susan'];
localStorage.setItem('friends', JSON.stringify(friends));
console.log(JSON.parse(localStorage.getItem('friends')));
Congratulations on completing the course!
Thank you for your support
Course instructor : Laurence Svekis -
providing online training to over
500,000 students across hundreds of
courses and many platforms.

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Chrome DevTools Introduction 2020 Web Developers Guide

  • 1.
  • 2. Course instructor : Laurence Svekis - Over 300 courses in technology and web applications. - 20 years of JavaScript web programming experience - 500,000+ students across multiple platforms - Digital instructor since 2002 READY TO HELP YOU LEARN and ANSWER ANY questions you may have.
  • 4.
  • 5.
  • 6.
  • 7. <html> <head> <title>Tester</title> </head> <body> <h1>DevTools Course</h1> <div>Welcome to the Page</div> <input value="Laurence"> <script> var a = 100; var el = document.querySelector('h1'); var friends = ['Laurence','John','Susan']; console.log('hello'); </script> </body> </html>
  • 8. let people; fetch('https://randomuser.me/api/?results=10').then((resp) => resp.json()).then(function (data) { console.log(data.results); people = data.results; console.log(people); }) let div = document.createElement('h1'); div.textContent = new Date(); document.body.appendChild(div);
  • 9.
  • 10. var images = $$('img'); for (each in images) { console.log(images[each].src); } document.querySelector('body').textContent = "Hello World" <link href="https://fonts.googleapis.com/css?family=Gayathri&display=swap" rel="stylesheet"> <style> h1 { font-family: 'Gayathri', sans-serif; } </style>
  • 11. ● ● ● ● ● let people; fetch('https://randomuser.me/api/?results=10').then((resp) => resp.json()).then(function (data) { console.log(data.results); people = data.results; console.log(people); }) let div = document.createElement('h1'); div.textContent = new Date(); document.body.appendChild(div);
  • 12. localStorage.setItem('course', 'Local DevTools'); let val1 = localStorage.getItem('course'); console.log(val1); //localStorage.removeItem('course'); sessionStorage.setItem('course', 'Session DevTools'); let val2 = sessionStorage.getItem('course'); console.log(val2); //sessionStorage.removeItem('course'); //sessionStorage.clear(); document.cookie = "course=Cookie DevTools"; console.log(document.cookie); const friends = ['Laurence', 'John', 'Susan']; localStorage.setItem('friends', JSON.stringify(friends)); console.log(JSON.parse(localStorage.getItem('friends')));
  • 13.
  • 14.
  • 15. Congratulations on completing the course! Thank you for your support Course instructor : Laurence Svekis - providing online training to over 500,000 students across hundreds of courses and many platforms.