JavaScript Performance Tips

• avoid loops

• avoid unused code

• avoid loging

• using strict mode

• use === instead of == (browser has more clarity)

• exploit hoisting

• use hasOwnProperty

• use local references for values that have deeper resolution path

• avoid synchronous calls

• minimize dom updates

• minimize style updates

• use fragment whenever applicable

• avoid (for i in) on objects

• exploit power of mapping

• have a check on prototypal inheritance