0 ) statement gives an integer in javascript

 

This question already has an answer here:

  • Using bitwise OR 0 to floor a number 5 answers
  • How does x|0 floor the number in JavaScript? 3 answers

    • The | operator performs bitwise logical OR . It requires its parameters to be integers, so it will convert a string to an integer. So 

    ( number | 0 )

    is equivalent to: 

    ( parseInt(number, 10) | 0 )

    Any number or'ed with 0 will return that same number, so that makes it equivalen to: 

    parseInt(number, 10)

    Well, the single pipe between the number and 0 is bitwise operator that treat their operands as a sequence of 32 bits (zeroes and ones). https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Bitwise_Operators#.7c_%28Bitwise_OR%29

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