Alert new line javascript

A simple one!

In JavaScript, you can create a new line in an alert box using the following methods:

1. Using the \n character:

   alert("Hello\nWorld!");

   This will display "Hello" on the first line and "World!" on the second line.

2. Using the <br> tag:

   alert("Hello<br>World!");

   This will also display "Hello" on the first line and "World!" on the second line.

3. Using the String.prototype.split() method:

   alert("Hello World!".split(" ").join("\n"));

   This will split the string into an array of words, join them with a newline character, and then display the result.

4. Using the String.prototype.replace() method:

   alert("Hello World!".replace(/ /g, "\n"));

   This will replace all spaces in the string with newline characters, and then display the result.

Note that the \n character is a special character in JavaScript that represents a newline, so you don't need to escape it with a backslash (\) unless you're using it in a string literal.