Cristiano questions

• addClass to an element with that class already? [closed]
• Javascript function is being called on page load
• Can the contents of a script tag be cut off if it's too long?
• Sort in ruby a JSON array of hashes
• Console.log not working in Chrome
• Mouse pointer on hover of Twitter Bootstrap dropdown nav
• Make an html number input always display 2 decimal places
• How to delete specific characters from a string in Ruby?

Cristiano answers