如何在MVC3视图中将​​变量从jQuery传递给变量？

Question

  

可能重复：
  How to pass variable from jquery to code in c#

在我的视图中，我有一个名为x：

的变量

@{ int x;}

我想在jQuery代码中设置一个x值。

我该怎么做？

Answer 1

由此：

@{var x = 5;}

<script type="text/javascript">
    var c= @(x);
    alert(c);
</script>

Answer 2

只需使用@x即可获取该值。实施例

@{int x = 42;}

<script type="text/javascript"> var x = @(x); alert('The answer to the Ultimate Question of Life, the Universe, and Everything is ' + x); </script>

Answer 3

你可以做这样的事......

@{  // declare this in your view 
    int x  = 100;
}

    $(document).ready(function() {

    var postdata = @x + 100; // here is the updated code. if you want to change the value eg. this will alert 200
    alert(postdata);
    $.ajax({
            url: 'Home/Index',
            data: postdata,
            success: function (returnData) {
                alert(returnData); // this will alert 210
            }
        });
});

您的控制器

public ActionResult Index(int x) // x will get the value here which is 200 here now..
{
   var y = x + 10; // do some logic here with the posted data from your view
   return Json(y,JsonRequestBehaviour.AllowGet); // you will need to return Json here cos you using the AJAX call
}