Update js codes.docx

Author: priya42bagde

js codes.docx

@@ -1841,6 +1841,7 @@ Hoisting:
 6. Due to the concept of hoisting in JavaScript, we can call a function even before we define the function definition in our program's code.
 7. Variables defined with let and const are hoisted to the top of the block, but not initialized.Let and const are also hoisted but we cant access them 
 until they are assigned because they are in Temporal dead zone.To avoid Temporal deadzone we need to declare let and const to the top of our program!
+***when const gets hoisted it will be defined undefined,and further processing will get assigned the value , this violated the meaning of const , this is the fundamental reason why const doesn't get hoisted and let just got tagged along with this feature.
 
 Examples:
 1. Hoisting Function: If i write below code then JS compiler auto move declaration first then call of a function.