有什么办法可以将javascript值传递给视图模型

Question

I am using the css dropdown list for city how to pass the selected value of city to model in view

<span class='selected' id="SelectedCity">select City</span>

the selected value is in span how to pass the span value to model ?

I have used $.post method but it hits the action method twice second time it takes the value null for city

 $.post("/UserRegistration/CreateEducator", { city: cityTextValue });

Answer 1

It's very simple. In Java EE we generally use request.getparameter("parameter name") to retrieve values from views. The only thing you are required is to give a name to your input, select or drop down list.

Answer 2

use onchange event for Select .

write script like this

function GetSelectedItem()
{
    var e = document.getElementById("select");
    var cityTextValue = "The Value is: " + e.options[e.selectedIndex].value + " and text is: " + e.options[e.selectedIndex].text;
    alert(cityTextValue );
}

Hope this helps