Highlights of JavaScript — Alerts, Variables, Numbers, and Strings

Highlights of JavaScript — Alerts, Variables, Numbers, and Strings

To learn JavaScript, we must learn the basics.

To learn JavaScript, we must learn the basics.

In this article, we’ll look at the most basic parts of the JavaScript language.

Alerts

The alert function displays an alert box with some text we pass in.

The text comes from the string argument.

For instance, can write:

alert("hello world!");

and ‘hello world’ would be displayed.

It is a global function, so it’s a property of window . window.alert is the same as alert .

The short form is fine for inclusion in our code.

Variables and Strings

Strings are basic elements of JavaScript code. They store text data.

A variable with the given name can only be declared once.

They can be stored in variables. Variables are names that we choose and assign values to so that we can store them for use later.

For example, we can write:

let name = "james";

to store names.

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