HTML5 replacements with previous javascript/jquery solution to increase performance of website
What HTML5 things can be replaced with previous javascript/jquery solution to increase performance of website? one thing i saw is that client side form validation is now possible with HTML 5 only no need of jquery plugins.

 - What other things we can replaces in a website (all types) from HTML5
   to reduce the dependency on javascript/jquery plugins. Can you give a list?
 - And as we know for older browser we will still need those jquery
   solution SO how to load jquey only for older browser and to newer
   just deliver HTML5 solutions to make the experience on latest browser
   much faster.

**my context is specially big e-commerce website.*
HTML5 replacements with previous javascript/jquery solution to increase performance of website
===

What HTML5 things can be replaced with previous javascript/jquery solution to increase performance of website? one thing i saw is that client side form validation is now possible with HTML 5 only no need of jquery plugins.

 - What other things we can replaces in a website (all types) from HTML5
   to reduce the dependency on javascript/jquery plugins. Can you give a list?
 - And as we know for older browser we will still need those jquery
   solution SO how to load jquey only for older browser and to newer
   just deliver HTML5 solutions to make the experience on latest browser
   much faster.

**my context is specially big e-commerce website.*