// JavaScript Document
const dogs = [{ name: 'Snickers', age: 2 }, { name: 'hugo', age: 8 }];
function makeGreen() {
const p = document.querySelector('p');
p.style.color = '#00ff00';
p.style.fontSize = '50px';
}
// Regular
console.log('hello');
// Interpolated
console.log('Hello I am an awful string!', '💩');
// Styled
// console.log('%c I am some great text', 'font-size:50px; background:red; text-shadow: 10px 10px 0 blue')
// warning!
console.warn('Warning');
// Error :|
console.error('ERROR!');
// Info
console.info('Crocodiles eat 3-4 people per year');
// Testing
const p = document.querySelector('p');
console.assert(p.classList.contains('ouch'), 'That is wrong!');
// clearing
console.clear();
// Viewing DOM Elements
console.log(p);
console.dir(p);
console.clear();
// Grouping together
dogs.forEach(dog => {
console.groupCollapsed(`${dog.name}`);
console.log(`This is ${dog.name}`);
console.log(`${dog.name} is ${dog.age} years old`);
console.log(`${dog.name} is ${dog.age * 7} dog years old`);
console.groupEnd(`${dog.name}`);
});
// counting
console.count('Max');
console.count('Max');
console.count('Ethan');
console.count('Ethan');
console.count('Max');
console.count('Ethan');
console.count('Max');
console.count('Ethan');
console.count('Ethan');
console.count('Ethan');
console.count('Ethan');
console.count('Ethan');
// timing
console.time('fetching data');
fetch('https://api.github.com/users/wesbos')
.then(data => data.json())
.then(data => {
console.timeEnd('fetching data');
console.log(data);
});
console.table(dogs);
This shows how you can utilize console.log commands in JavaScript. Knowing how to use dev tools is useful to a web designer when troubleshooting the code.
Link: http://techteach.us/Web2020/ZWeiJian/WCP/Labs/Lab_23/Lab_23.html
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