SCRIPT1015 error;Unterminated string constant

Hi,
Please help, I am using a javascript which is shown below to add a row dynamically to my table data in MVC view.Here I want to use 4 dropdown lists which should fetch data from database and show in the view.
$("#myButton").click(function () {
// Create elements dynamically
var newRow = '' +
'@Html.DropDownList("SupplierId", String.Empty)' +
'@Html.DropDownList("SKU", String.Empty)' +

..

 '';
// Add the new dynamic row after the last row
$('#myTable tr:last').after(newRow);
//var newRow1=''+''+'';
});
// Bind the click event, to the table rows
// New way (jQuery 1.7+) - .on(events, selector, handler)
$('#myTable').on('click', 'tr', function (event) {
// Add or Remove the class on clicking the table row
$(this).toggleClass('myClass');
});
 While running my application  I am getting error, "SCRIPT1015 error;Unterminated string constant" at
'a this point

  I think it is looking for a closing

' a this point

Abc
Qwert
aqwq
' 

 The code showing error while running is shown below:


$("#myButton").click(function () {
// Create elements dynamically
var newRow = '' +
'
Abc
Qwert
aqwq
' +
'
Parcetamol
Cosome
Crocin
' +
'' +
'' +
'' +
'
30 Days
15 Days
20 Days
' +
'' +
'' +
'
Telephone
E-Mail
Web
Direct
' +
'';
$('#myTable tr:last').after(newRow);
//var newRow1=''+''+'';
});
Any help will be appreciated.Thanks  in advance.