Error in the alert using JavaScript.

Hi all!!

I am getting an error when creating an alert in java-script. Here is my code and am getting an error as like this

function myTrimBoardNumber() {
debugger;
    var value = Xrm.Page.data.entity.attributes.get("telephone1").getValue();
    if(value== "" || value ==null)
    {
    Xrm.Page.ui.setFormNotification(‘Please fix the following error(s):’, ‘Information’);
    }
    }
Kindly help me..

Thanks in advance.