round value to 2 decimals javascript

Question

I have a small issue with the final value  i need to round to 2 decimals   var pri   price    this  attr  id   substr len-2                 get  sale price output json     code  v                   function data                      pri  val Math round  data   1 19  2                                  Any help is appreciated   Solution    pri  val Math round  data   1 19   100      100

User · Accepted Answer

Just multiply the number by 100  round  and divide the resulting number by 100

User · Answer

If you want it visually formatted to two decimals as a string  for output  use toFixed     var priceString   someValue toFixed 2     The answer by  David has two problems    It leaves the result as a floating point number  and consequently holds the possibility of displaying a particular result with many decimal places  e g  134 1999999999 instead of  134 20   If your value is an integer or rounds to one tenth  you will not see the additional decimal value   var n   1 099   Math round  n   100   100   toString     - gt   1 1  n toFixed 2                               - gt   1 10   var n   3   Math round  n   100   100   toString     - gt   3  n toFixed 2                               - gt   3 00     And  as you can see above  using toFixed   is also far easier to type

[jquery] round value to 2 decimals javascript

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