Internet Explorer 11 : Object Doesn't Support Property Or Method 'isinteger'

i have this error in internet explorer console ' Object doesn't support property or method 'isInteger' ' how can i resolve it ? code: function verificaNota(nota){ if (nota

Solution 1:

As stated by @Andreas, Number.isNumber is part of ES6 so not supported by IE11

You can add the following polyfill to you javasript

Number.isInteger = Number.isInteger || function(value) {
    returntypeof value === "number" && 
           isFinite(value) && 
           Math.floor(value) === value;
};

source: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isInteger