Java script c-2 variables

i)let ii)const iii)var Let,var -almost same let-It works in {} only var-It works in globally. outoff {} const-we cannot change the value. Eg.

Source: [Dev.to](https://dev.to/kavin_k_5b0b0c5a2e4bbf880/java-script-c-2-variables-5bji)