valid « String « jQuery Q&A

1. jQuery: Generate valid tag of string    stackoverflow.com

I am looking for a way to generate a valid tag (string with only a-z and minus as valid chars) out of a given string. Just let me show you the code:

<p>
 ...

2. Returning a string containing valid Json with Nancy    stackoverflow.com

I receive a string that contains valid JSON from another service. I would like to just forward this string with Nancy but also set the content-type to "application/json" which will allow me ...

3. How to check if a string is a valid hex color representation?    stackoverflow.com

For example: AA33FF = valid hex color Z34FF9 = invalid hex color (has Z in it) AA33FF11 = invalid hex color (has extra characters)

4. json with newlines in strings should be valid    forum.jquery.com

Since Crockford defined JSON I think he was pretty sure how to parse it too. I am not sure how someone arrives at a JSON string with literal newlines in strings. A compliant JSON.stringify implementation shouldn't produce it. That leaves some sort of ad-hoc JSON generation, which is not a good idea for so many reasons. When the JSON string fails ...