Blaster questions

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• Javascript adding 0.1 to 0.2 causes 0.30000000000000004 [duplicate]
• How do I capture a CTRL-S without jQuery or any other library?
• Move to DIV when toggled with jQuery
• When should I use this.x vs var x?
• What URLs on an https page need to be https?
• Does HTML5 localStorage maximum size include key names?
• Is it sometimes necessary to use multiple javascript libraries?
• jquery: history.back(1) issue
• Get values stdClass Object PHP