escape() function. The
escape() function encodes a string by replacing certain characters with their ASCII hexadecimal equivalent, which can be useful when working with URLs or when encoding special characters that may cause problems if they are not properly encoded.
unescape() to decode the code can be useful because it allows you to include special characters, such as quotes or angle brackets, in the code without causing errors. For example, if you wanted to include a string with a quote character inside a
document.write statement, you could encode the string using
escape(), and then use
unescape() to decode it when the code is written to the document:
In this example, the code inside the
script tag has been encoded using
escape(), and then decoded using
unescape() before being written to the document. This allows the code to include special characters without causing errors.
However, it's worth noting that using
For example, if you have a string that contains special characters (e.g., "alert('Hello, World!')"), you can encode it using escape() and then decode it using unescape() before writing it to the document. This ensures that the special characters are properly handled and do not interfere with the execution of the code.