I have this function in my scripts and Internet Explorer throws an error: "el objeto no acepta la propiedad o el metodo trunc" which means something like "the object doesn't accept property or method trunc"

function minutesToString(a){
  var hours = Math.trunc(a/60);
  var minutes = a % 60;
  return(hours +" hr "+ minutes + " m");
}

On chrome, firefox, etc. works perfectly.

I have this function in my scripts and Internet Explorer throws an error: "el objeto no acepta la propiedad o el metodo trunc" which means something like "the object doesn't accept property or method trunc"

function minutesToString(a){
  var hours = Math.trunc(a/60);
  var minutes = a % 60;
  return(hours +" hr "+ minutes + " m");
}

On chrome, firefox, etc. works perfectly.

• javascript
• internet-explorer

• IE does not support Math.trunc() – Ju66ernaut Commented Jun 15, 2017 at 20:08
• @Quentin the question is obvious. Thanks for the info anyways – Sebastian Breit Commented Jun 15, 2017 at 20:14

4 Answers 4

Add a polyfill for Math.trunc(). Include the following code somewhere before using Math.trunc()

Math.trunc = Math.trunc || function(x) {
  if (isNaN(x)) {
    return NaN;
  }
  if (x > 0) {
    return Math.floor(x);
  }
  return Math.ceil(x);
};

Simply use Math.floor instead or leave it away completely:

function minutesToString(a){
 var minutes = a % 60;
 var hours=(a-minutes)/60;
 return(hours +" hr "+ minutes + " m");
}

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/trunc#Browser_compatibility

This is the MDN, and you can look up JS functions here. On the right there is a browser compatibility section or at the bottom of the page. Considering IE sucks, it doesn't support this property (trunc) on the Math object.

parseInt() accepts numbers, is supported by IE and behaves just like Math.trunc