Javascript: decodeURIComponent seems to be malfunctioning

I have encountered a situation where a guy helps me decode a string to make it readable.

decodeURIComponent("Invalid Ticker Name \u0027t\u0027 at line: 3")
"Invalid Ticker Name 't' at line: 3"

Upon further inspection, it appears that the source of this string (array item) is indeed a string.

typeof decodeURIComponent(errorsArr[i])
"string"

Despite this revelation, attempting to decode the array item proves unsuccessful.

decodeURIComponent(errorsArr[i])
"Invalid Ticker Name \u0027t\u0027 at line: 3"

What steps should be taken in this scenario?

javascripturldecode

Answer №1

Aha, I've got it figured out. Your string contains the literal \u0027. To confirm this, you can test it in a web browser with:

javascript:alert("\u0027");alert("\\u0027");

When you input it as:

Invalid Ticker Name \u0027t\u0027 at line: 3

The unicode character is being substituted. Have you considered using %27 instead?

Answer №2

Issue successfully resolved.

As indicated in the code snippet

// When the document is sent as 'application/javascript' or
// 'text/javascript', the browser encloses the text in a <pre>
// tag and html encodes the content. Therefore, we must extract 
// the original text from the text node's nodeValue property to 
// retrieve the unaltered content.
// Please note that IE6 only supports text/html

I have switched to serving the file as html/text, which fixed the issue.

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