jquery - Javascript Math.floor issue between specific range of numbers -


i'm facing issue math.floor function of javascript below scenario:

1) value betwwen 8192 , 10484,

    if type 8192.8  -> math.floor converts 8192.79      if type 8192.88  -> math.floor converts 8192.87      if type 8192.3  -> math.floor converts 8192.29

strange part except range given above function works fine.

html: <div data-bind="text: popincrease"></div> <input type="text" data-bind="value: userinput,  valueupdate: 'afterkeydown'" />  javascript:  var viewmodel = function () { var _self = this; _self.userinput = ko.observable(); _self.popincrease = ko.computed(function () {          return parsefloat((math.floor(_self.userinput() * 100) / 100)).tofixed(2); }); };  ko.applybindings(new viewmodel());

jsfiddle:https://jsfiddle.net/91z5bdy4/1/

when changed 100 1000 solved error not understand why happened on first place?

you can switch this:

return parsefloat(_self.userinput()).tofixed(2);

working version of jsfiddle: https://jsfiddle.net/jfriend00/5rll04lk/

or, if want work around of idiosyncrasies of .tofixed(), can use this:

return (math.round(_self.userinput() * 100) / 100).tofixed(2);

working jsfiddle: https://jsfiddle.net/jfriend00/xx2aj2l0/

this solution passes 3 of test cases.


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