Sample binding for the drop down box select

Bind text to the text

var locationCity = productViewObj.Product.LocationCity; 
var countCity = $("#slCity option").length; 

for (var i = 0; i < countCity; i++) { 
if ($("#slCity").get(0).options[i].text == locationCity) { 
$("#slCity").get(0).options[i].selected = true; 
break; 
} 
}

Bind value by value

var deliveryTemplateID = productViewObj.Product.DeliveryTemplateID; 
var deliveryCount = $("#deliverySelect option").length; 
for (var i = 0; i < deliveryCount; i++) { 
if ($("#deliverySelect").get(0).options[i].value == deliveryTemplateID) { 
$("#deliverySelect").get(0).options[i].selected = true; 
break; 
} 
}