math - float value extraction in javascript -

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how can extract float value (0.9) whole integer value (9) in javascript?

example 

var total = 67.9;  process  var whole var dec  var whole = 67; var dec = 9;

the simplest way can think of this:

var string = total.tostring(); var dotidx = string.indexof("."); var dec = dotidx >= 0 ? +string.slice(dotidx + 1) : 0;

notice doesn't work numbers in exponential forms.


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