How to Append a Line Feed Character to Dom Element
JavaScript new line can be added to either the console output or the DOM output. When working with the console output, we can use the n symbol, meaning to add a new line. When using the DOM output for a web page, we can use the <br> HTML element to manipulate the DOM and add elements. In this article, we will learn how to add new line to string, so let's get started!
Contents
- What Is New Line in JavaScript?
- – Syntax
- Code Examples
- – Escape Sequences Code Example
- – Template Literal JavaScript New Line Code Example
- – HTML Line Break Code Example
- – Appending String With New Lines to DOM Code Example
- – Appending String With New Lines Example: Solution Two
- FAQs
- 1. What Does n Mean in JavaScript?
- 2. Does n work in HTML?
- 3. What Is the Difference Between r and n Symbols in JavaScript?
- 4. Is It Possible To Add New Line To String in HTML Without Using the <br> Element?
- 5. How To Create a New Line Span?
- 6. How Do You Write an Escape Sequence?
- 7. What Is the Difference Between Escape Sequence and Format Specifier?
- 8. Why Should We Avoid Line Break in JavaScript?
- 9. Why Is Whitespace Important?
- 10. What To Do if n Symbol Is Not Working?
- Final Thoughts on JavaScript New Line
What Is New Line in JavaScript?
JavaScript document write new line, also referred to as escape sequences, is a common method to generate new line character in JavaScript. The JavaScript line break string creates a new line in Windows/Linux through /n as mentioned earlier, while /r is used for macs. It must be noted that line break in JavaScript is a complex task using various methods. We will be using some of the methods commonly used to add JavaScript line break string.
– Syntax
Code Examples
Here are some code examples for this function.
– Escape Sequences Code Example
In the example below, the straight line without any line break in JavaScript would result in a JavaScript line break string. The final output would be:
This is a sample example
To add
A new line
Be mindful that escape sequences are commonly used to create new lines as the process is quite simple. An important thing to note here is that we must not use spaces after the new line as that would be accepted as a space and this would alter the output desired.
-
Escape Sequences Code
let sampleexample = "This is a sample example to add a new line";
let newstring = "This is sample example nTo add nA new line";
console.log(sampleexample);
console.log(newstring);
– Template Literal JavaScript New Line Code Example
In simple terms, template literals are string literals that are expressions embedded in order to facilitate multi-line strings. As seen below, template literals are using backticks within its code. For multi-line strings, we prefer template literals as they are much more convenient.
-
Template Literal JavaScript New Line Code
let sampleexample = "This is a sample example to add a new line";
let newstring = `This is a
Sample example
To add a new line`;
console.log(sampleexample);
//Output: "This is a
//Sample example
//To add a new line"
console.log(newstring);
//Output: "This is a
//Sample example
//To add a new line"
– HTML Line Break Code Example
As stated above, when using DOM output, we use the <br> to JavaScript document to write new line. However, this method is only suggested if the division of line is mandatory. In cases like the one shown below, this method is also commonly used to add line breaks in JavaScript.
One thing to keep in mind is that we must use .innerHTML instead of .innerText, common with other content types.
-
HTML Line Break Code
<html>
<body>
<p id="newline"></p>
<script>
let sampleexample = "This is a" + "<br>" + "sample example" + "<br>" + "to add a new line";
document.getElementById("newline").innerHTML = sampleexample;
</script>
</body>
</html>
– Appending String With New Lines to DOM Code Example
Amidst the detailed display shown below, the result is that all the numbers would be represented in a single line without any new line break in JavaScript. These line breaks are evident on the page upon inspection. To fix this, we can change the code and use <br> instead of n after each string in the array (customItems). We can also use the CSS declaration to set the white space property to no-wrap, fixing the issue.
In this example, we will first use the problematic code and then show the solution for better understanding.
-
Appending String With New Lines to DOM Code
<div id="yourid">
…
</div>
div {
font-size: 6em;
font-weight: bold;
}
let customItems = "1,2,3,4,5,6";
customItems = customItems.split(",");
for (let i = 0; i < customItems.length; i++) {
customItems[i] = "- " + customItems[i] + "n";
}
customItems = customItems.join("");
document.getElementById("yourid").innerHTML = customItems;
Quick note: The code above looks okay but if we look closely, the customItems string is split into an array of strings. It is then looped and appended to the beginning and then the end of each string. The join() is used to link the array into a single string and get it appended to the DOM. The output of this would be:
let customItems = "1,2,3,4,5,6";
customItems = customItems.split(",");
console.log(customItems);
for (let i = 0; i < customItems.length; i++) {
customItems[i] = "- " + customItems[i] + "n";
}
console.log(customItems); // ["- 1n", "- 2n", "- 3n", "- 4n", "- 5n", "- 6n"]
customItems = customItems.join("");
console.log(customItems); // "- 1n- 2n- 3n- 4n- 5n- 6n"
document.getElementById("ovde").innerHTML = customItems;
-
Appending String With New Lines Example: Solution One
let customItems = "1,2,3,4,5,6";
customItems = customItems.split(",");
for (let i = 0; i < customItems.length; i++) {
customItems[i] = "- " + customItems[i] + "<br>";
}
customItems = customItems.join("");
document.getElementById("yourid").innerHTML = customItems;
-
Appending String With New Lines Using HTML Break Element Example Analysis
We mentioned earlier how <br> elements are used only in events when they are direly needed, meaning the division of lines has to be mandatory such as a postal address. Thus, using <br> elements to separate paragraphs or manipulate spacing issues is not recommended.
– Appending String With New Lines Example: Solution Two
let customItems = "1,2,3,4,5,6";
customItems = customItems.split(",");
for (let i = 0; i < customItems.length; i++) {
customItems[i] = "- " + customItems[i] + "n";
}
customItems = customItems.join("");
document.getElementById("ovde").innerHTML = customItems;
div {
font-size: 6em;
font-weight: bold;
white-space: pre-wrap;
}
-
Appending String With Line Break CSS Declaration Example Analysis
As seen above, the usage of CSS declaration here is recommended over the traditionally significant method of <br>, suitable for selective events. The white-space property shows how the element handles the space in the inner text, preserving the space via no-wrap. This includes the line break in JavaScript.
FAQs
If you still have questions regarding JavaScript New Line, continue reading for answers to common queries.
1. What Does n Mean in JavaScript?
The n symbol in JavaScript means newline character.
2. Does n work in HTML?
Take note that n does not work in HTML as HTML uses the <br> element discussed in the example shown above. Thus, it does not work with the external .js files as well.
3. What Is the Difference Between r and n Symbols in JavaScript?
Both are used to add new line character in JavaScript, but while n is a newline character, r is a carriage return. Both of these symbols are derived from the basics settings of a typewriter, specifically the position and the feed of the paper.
4. Is It Possible To Add New Line To String in HTML Without Using the <br> Element?
Yes, we can add a line break in HTML by using pseudo-elements. These elements style certain parts of elements and can help us add line breaks in JavaScript such as the CSS declaration shown in the earlier examples.
5. How To Create a New Line Span?
Spans can move to the next line if the space is shortened. We can do so by setting the display via the inline block.
6. How Do You Write an Escape Sequence?
We can represent the escape sequence term by using two or more characters with the first input being the backslash (). Some common examples of escape sequence are n, r, v, t and \.
7. What Is the Difference Between Escape Sequence and Format Specifier?
We use format specifiers for various data types, while escape sequences allow us to access certain features that are not readily available.
8. Why Should We Avoid Line Break in JavaScript?
Line break in JavaScript should be avoided because it is only used for significant purposes as mentioned in earlier examples, and the reason this occurs is that JavaScript ignores spaces, newlines, and tabs that appear in between programs unless they are a part of the regular strings or literals (expression).
9. Why Is Whitespace Important?
Whitespace is important because it enhances the reading experience of code in JavaScript. On the screen, whitespace is not visible. The tabs, spaces, and newline characters are also not displayed.
Thus, if we use whitespace with a string constant, JavaScript recognizes it and vice versa. Normally, space is not an issue in JavaScript as some words need to be written combined to avoid the ambiguous meaning of the code.
10. What To Do if n Symbol Is Not Working?
In most cases, using r (carriage return) has worked out for many developers when n has not. It must be noted that not all add new line to string methods would be solved by using n escape sequence. That is why there are other sequences used to provide alternate solutions.
Final Thoughts on JavaScript New Line
In this article, we learned how to add new line to string using several methods. We discussed the following key points:
- We learned that JavaScript document write new line is possible using the console and DOM output.
- We discussed about the escape sequences, template literals, HTML line breaks and appending strings with new line.
- Lastly, we discussed the frequently asked questions regarding line break in JavaScript.
There are many other tutorials concerning all the programming languages in our blog section. If at some point you need guidance, feel free to come back for confirmation.
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