how to convert numbers to million in javascript

I have no idea what $scope.MoneyFormat is.

So I simplified your function to a plain old js function and it works.

function convertToInternationalCurrencySystem (labelValue) {

    // Nine Zeroes for Billions
    return Math.abs(Number(labelValue)) >= 1.0e+9

    ? (Math.abs(Number(labelValue)) / 1.0e+9).toFixed(2) + "B"
    // Six Zeroes for Millions 
    : Math.abs(Number(labelValue)) >= 1.0e+6

    ? (Math.abs(Number(labelValue)) / 1.0e+6).toFixed(2) + "M"
    // Three Zeroes for Thousands
    : Math.abs(Number(labelValue)) >= 1.0e+3

    ? (Math.abs(Number(labelValue)) / 1.0e+3).toFixed(2) + "K"

    : Math.abs(Number(labelValue));

}

alert( convertToInternationalCurrencySystem (6800000) ); // this outputs 6.8M

JSFiddle: https://jsfiddle.net/r5ju34ey/