How to Create an Alert Popup in JavaScript?

Estimated read time 1 min read

To create an alert popup in JavaScript, you can use the built-in alert() function. Here’s an example code snippet that demonstrates how to create an alert popup in JavaScript:

alert("Hello, world!");

In this code, the alert() function takes a string as its argument. This string is displayed in a popup window that appears in the user’s browser.

You can customize the message displayed in the popup by replacing “Hello, world!” with any other string of your choice. You can also use variables or expressions as the argument to the alert() function, as long as they evaluate to a string. For example:

const name = "John";
const age = 30;
alert(`My name is ${name} and I am ${age} years old.`);

This code uses a template literal to create a string that includes the values of the name and age variables. The resulting string is passed as an argument to the alert() function, which displays it in an alert popup.

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