I am working on a function which looks through a list of table values on the page and if the column title contains any part of the output, it will convert the value accordingly.

function createLink(field, val) {



var output = {

    'ntid': 'https://internal/profile/' + val,

    'email': 'mailTo:' + val

};



var i, key, keys = Object.keys(output);

for ( i = 0; i < keys.length; ++i ) {

        key = keys[i];

  if ((field.toLowerCase()).includes(key)) {

     return '<a href='+output[key]+' target=_blank>'+val+'</a>';

  }

}



return val;

}

The issue I am running into is that IE is throwing an error on the .includes() line stating that Object doesn't support property or method 'includes'.

I had a bit of trouble getting it to work as is but didn't realize includes() must be something that not all browsers support.

Is there something else I can use in place of this that will allow for cross browser support ?