通过更改MVC4中的另一个下拉列表来绑定下拉列表 [英] Binding dropdownlist by changing another dropdownlist in MVC4

问题描述

在我的控制器操作方法中，我添加以下代码，我在绑定后传递列表数据

public JsonResult GetMonthByYear（int Year）

{

返回Json（新{ListMonths = Months}）;



}

视图当我想要检索列表的长度时我收到错误因为Jquery未定义

for（int ind = 0; ind< result.length; ind ++）function =yearchange（）={=var =stryear =document.getElementById（Year_ID）。value; if =（（stryear）=！=）alert（stryear）; =options ={}; options.url = / PO / GetMonthByYear ; options.type = POST ; options.datatype = JSON ; options.data ={year：=$（& quot;＃year_id& quot;）。val（）=}; =options.success =function（result）=团队=eval（'（'+ =result.value =&＃39;）&＃39;）; =listitems =; lstmonths = result.ListMonths;长度= result.ListMonths.length; alert（length）; =alert（lstmonths.length）; =for（int =ind =0; ind< result.length; ind ++）alert（& quot; hello& quot;）; =} =$ .ajax（options）; =i =added =the =below =references =< script =src =〜/ Scripts /jquery-1.8.3.jstype =text / javascript>< / script> & lt; script =>



请告诉我该怎么办才能解决这个问题？



我尝试过：



Javascript方法显示错误

Hi,
In my controller action method I am adding the below code I am passing list data after binding it
public JsonResult GetMonthByYear(int Year)
{
return Json(new { ListMonths = Months});

}
in view when I want retrieve the length of the list I am getting the error as Jquery is undefined
for(int ind=0;ind<result.length;ind++) function="" yearchange()="" {="" var="" stryear="document.getElementById("Year_ID").value;" if="" ((stryear)="" !=""")" alert(stryear);="" options="{};" options.url=""/PO/GetMonthByYear";" options.type=""POST";" options.datatype=""json";" options.data="{" year:="" $(&quot;#year_id&quot;).val()="" };="" options.success="function" (result)="" teams="eval('('" +="" result.value="" &#39;)&#39;);="" listitems=""";" lstmonths="result.ListMonths;" length="result.ListMonths.length;" alert(length);="" alert(lstmonths.length);="" for(int="" ind="0;ind<result.length;ind++)" alert(&quot;hello&quot;);="" }="" $.ajax(options);="" i="" added="" the="" below="" references="" <script="" src=""~/Scripts/jquery-1.8.3.js"" type=""text/javascript"></script>" &lt;script="">

Please let me know what should I do to resolve thi?

What I have tried:

Javascript method showing error

推荐答案

（& quot;＃year_id& quot;）。val（）=}; =options.success =function（result）=teams =eval（'（'+ = result.value =&＃39;）&＃39;）; =listitems =; lstmonths = result.ListMonths;长度= result.ListMonths.length; alert（length）; =alert（lstmonths.length）; =for（int =ind =0; ind< result.length; ind ++）alert（& quot; hello& quot;）; =} =

(&quot;#year_id&quot;).val()="" };="" options.success="function" (result)="" teams="eval('('" +="" result.value="" &#39;)&#39;);="" listitems=""";" lstmonths="result.ListMonths;" length="result.ListMonths.length;" alert(length);="" alert(lstmonths.length);="" for(int="" ind="0;ind<result.length;ind++)" alert(&quot;hello&quot;);="" }=""

.ajax（options）; =i =added =the =below =references =< script =src =〜/ Scripts / jquery-1.8.3.jstype =text / javascript>< / script> & lt; script =>



请告诉我该怎么办才能解决这个问题？



我尝试过：



Javascript方法显示错误

.ajax(options);="" i="" added="" the="" below="" references="" <script="" src=""~/Scripts/jquery-1.8.3.js"" type=""text/javascript"></script>" &lt;script="">

Please let me know what should I do to resolve thi?

What I have tried:

Javascript method showing error

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