I can't get a select box value until is clicked

Question

I have this selectBox:

<select class="span2" name="filterYear" id="filterYear" style="margin-right:10px;">
    <% for (var i = 0; i < years.length; i++) { %>
        <% if (years[i] == selectedYear) { %>
            <option value="<%= years[i] %>" selected="selected"><%= years[i] %></option>
        <% } else { %>
             <option value="<%= years[i] %>"><%= years[i] %></option>
        <% } %>
    <% } %>
</select>

With this js function:

$("#filterYear").change(function(e){        
    $.ajax({
        url: '/changeYear/' + this.value,
        type: 'GET'
        });                
    }
});

And this is the node.js function. I get the value of the selectBox and set it to another variable:

exports.changeYear = function (req, res) {        
    var year = req.param('year');    
    req.session.maindashSelectedYear = year;        
};

The problem is this: If a user doesn't click the selectBox, the function req.param('year') does not work... But if a user does click it, everything works fine! I have no idea how to resolve this.

Answer 1

您可以像这样从网址获取参数

  req.params.years