How To Escape In Javascript

Escaping characters in JavaScript is a crucial skill for any web developer. Whether you’re handling user input with special characters, or trying to output code dynamically, knowing how to escape characters in JavaScript is essential.

Steps:

Step 1: Understand What Character Escaping Is

Character escaping simply involves adding a backslash (\) before a character that is seen as special JavaScript syntax.

For example, if you wanted to output a string that contained double quotes, you would normally do so with "string here".

However, if you want to include double quotes within the string, you would need to escape them with a backslash like so: "string with \"double quotes\" inside".

Step 2: Use Escape Characters

Here are some common special characters in JavaScript and their escape codes:

  • Double quotes: \”
  • Single quotes: \’
  • Backslash: \\
  • Newline: \n
  • Carriage return: \r
  • Tab: \t

Step 3: Use Template Literals

As of ES6 (ECMAScript 2015), JavaScript introduced template literals which allow for easier string formatting, and escaping special characters. To create a template literal, you simply use backticks () instead of single or double quotes.

Here's an example of a template literal where special characters are escaped:

This will output:

This string contains "double quotes" and 'single quotes' and a backslash \ and a newline 

Step 4: Use Libraries/Functions

If you don't want to manually escape characters, there are several libraries and functions available that can handle it for you.

One popular library is Lodash, which includes an escape` function that escapes characters in a string.

Here’s an example of using Lodash to escape special characters:

Conclusion

Escaping characters in JavaScript is a crucial skill for any web developer. Whether you choose to manually escape them or use a library or function, it’s important to understand what character escaping is and why it’s necessary.