Javascript parse float is ignoring the decimals after my comma

Question

Here s a simple scenario  I want to show the subtraction of two values show on my site     Value on my websites HTML is   75 00  var fullcost   parseFloat     fullcost   text         Value on my websites HTML is   0 03  var auctioncost   parseFloat     auctioncost   text      alert fullcost     Outputs  75 alert auctioncost     Ouputs  0   Can anyone tell me what I m doing wrong

User · Accepted Answer

This is  By Design    The parseFloat function will only consider the parts of the string up until in reaches a non    -  number  exponent or decimal point   Once it sees the comma it stops looking and only considers the  75  portion    https   developer mozilla org en JavaScript Reference Global Objects parseFloat   To fix this convert the commas to decimal points    var fullcost   parseFloat     fullcost   text   replace

User · Answer

It is better to use this syntax to replace all the commas in a case of a million 1 234 567  var string    1 234 567   string   string replace     d   -  g        var number   parseFloat string   console log number    The g means to remove all commas   Check the Jsfiddle demo here

User · Answer

As  JaredPar pointed out in his answer use parseFloat with replace  var fullcost   parseFloat     fullcost   text   replace               Just replacing the comma with a dot will fix  Unless it s a number over the thousands like 1 000 000 00 this way will give you the wrong digit  So you need to replace the comma remove the dots      Remove all dot s  Replace the comma  var fullcost   parseFloat     fullcost   text   replace     g     replace               By using two replaces you ll be able to deal with the data without receiving wrong digits in the output

User · Answer

javascript s parseFloat doesn t take a locale parameter  So you will have to replace   with    parseFloat  0 04  replace                0 04

User · Answer

Numbers in JS use a    full stop   period  character to indicate the decimal point not a    comma

User · Answer

parseFloat parses according to the JavaScript definition of a decimal literal  not your locale s definition   E g   parseFloat is not locale-aware   Decimal literals in JavaScript use   for the decimal point

User · Answer

In my case  I already had a period    and also a comma     so what worked for me was to replace the comma    with an empty string like below  parseFloat  3 000 78  replace             This is assuming that the amount from the existing database is 3 000 78  The results are  3000 78 without the initial comma

User · Answer

From my origin country the currency format is like  3 050 89       parseFloat identifies the dot as the decimal separator  to add 2 values we could put it like these   parseFloat element toString   replace     g     replace

User · Answer

For anyone arriving here wondering how to deal with this problem where commas     and full stops     might be involved but the exact number format may not be known - this is how I correct a string before using parseFloat    borrowing ideas from other answers    function preformatFloat float      if  float         return                 Index of first comma    const posC   float indexOf           if posC     -1           No commas found  treat as float       return float              Index of first full stop    const posFS   float indexOf           if posFS     -1           Uses commas and not full stops - swap them  e g  1 23 -- gt  1 23        return float replace     g                    Uses both commas and full stops - ensure correct order and remove 1000s separators    return   posC  lt  posFS     float replace     g         float replace     g     replace                       lt -- parseFloat preformatFloat  5 200 75       -- gt  5200 75   At the very least  this would allow parsing of British American and European decimal formats  assuming the string contains a valid number

User · Answer

Why not use globalize  This is only one of the issues that you can run in to when you don t use the english language   Globalize parseFloat  0 04       0 04   Some links on stackoverflow to look into    Jquery Globalization Globalization in JQuery is not working

[javascript] Javascript parse float is ignoring the decimals after my comma

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