In this article, we will discuss the steps required to write a JavaScript program to replace all line breaks with <br> tags.

Why Replace Line Breaks with `br` in JavaScript

Line breaks are used to separate different text sections and add structure to the content. However, line breaks are not automatically interpreted as a new line when displaying text on a web page. To create new lines on a web page, the HTML line break tag, <br>, must be used.

When displaying text that has been input by a user, it is common to replace line breaks with <br> tags to ensure that the text is displayed correctly on the web page. This is especially important when displaying user-generated content, such as comments or reviews, where line breaks are often used to add structure to the text.

JavaScript Function to Replace Line Breaks

To replace line breaks with tags in JavaScript, a function can be created that takes a string as an input and returns a new string with all line breaks replaced by tags. The function can be defined as follows:

				
					function replaceLineBreaks(text) {
  return text.replace(/\n/g, '<br>');
}

The function uses the replace() method, a built-in method that replaces all occurrences of a specified value with another value. In this case, the regular expression /\n/g is used to match all line breaks in the text. The second argument, '<br>', is the value that will replace the line breaks.

Using the JavaScript Function

The function can be used to replace line breaks in a string by passing the string as an argument to the function. For example:

				
					var text = "This is line 1.\nThis is line 2.";
var newText = replaceLineBreaks(text);
console.log(newText);

The output of the code will be:

				
					This is line 1.<br>This is line 2.

As can be seen, the line breaks in the original string have been replaced by <br> tags in the new string.


Thanks for reading. Happy coding!