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Data Types

  • For encoding and decoding we use decodeURI and ecodeURI
  • NaN is return when we multiply say two strings
  • When Object converted to Boolean we get TRue
  • When we say alert(num) when num is not defined or initiated we get error but after we write var num; alert(num), we get undefined as a result.
  • parseInt(num, base);
  • const constant = value;
  • newValue = oldValue   >>>   3   Move bits of operand by 3 spaces right
  • & | ^ ~
  • JavaScript 1.3 strict equality and inequality operator ===   !==
  • Short-circuit evaluation by placing the key expression or the less resource-intensive expression first when using logical AND/OR operators.

for (variable in object) {



  • The use of in also works with conditional tests

IT Notes

by VinodSebastian

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