Things we can do with the window object.
JavaScript is partly an object-oriented language.
To learn JavaScript, we got to learn the object-oriented parts of JavaScript.
In this article, we’ll look at built-in browser objects.
The window.location
property lets us get the URL of the page and redirect it to another one.
For instance, we can use location.hostname
to get the hostname.
And href
gets us the full path.
pathname
gets us the segment before the query string.
port
gives us the port.
search
gives us a query string.
We can get all the properties of the location
object with the loop:
for (const key in location) {
if (typeof location[key] === "string") {
console.log(key, location[key]);
}
}
We loop through each property with the location
object.
We set the location.href
property to redirect to a new URL.
For example, we can write:
window.location.href = 'http://www.example.com';
Also, we can write:
location.href = 'http://www.example.com';
location = 'http://www.example.com';
location.assign('http://www.example.com');
replace
is almost the same as assign
, but it doesn’t create a new browser history entry.
We can use it by writing:
location.replace('http://www.example.com');
To reload a page, we can write:
location.reload();
We can also assign window.location.hre
to itself to reload the page:
window.location.href = window.location.href;
location = location;
Exercise from Eloquent JavaScript. Today, we will write a function that forms a chessboard. You can find the exercise in the Eloquent Javascript book (3rd edition, chapter 2; Program Structure). Write a program that creates a string that represents an 8×8 grid, using newline characters to separate lines. At each position of the grid there is either a space or a “#” character. The characters should form a chessboard.
One of the nice things about learning JavaScript these days is that there is a plethora of choices for writing and running JavaScript code. In this article, I’m going to describe a few of these environments and show you the environment I’ll be using in this series of articles.
To paraphrase the title of an old computer science textbook, “Algorithms + Data = Programs.” The first step in learning a programming language such as JavaScript is to learn what types of data the language can work with. The second step is to learn how to store that data in variables. In this article I’ll discuss the different types of data you can work with in a JavaScript program and how to create and use variables to store and manipulate that data.
Professor JavaScript is a JavaScript online learning courses YouTube Channel. Students can learn how to develop codes with JavaScript from basic to advanced levels through the online courses in this YouTube channel.
Async callbacks or promises. Introduction to JavaScript Async Programming