Javascript MVC:使用AJAX从控制器获取JSON数据失败
我正在尝试使用AJAX从控制器查询数据,我的控制器是:Javascript MVC:使用AJAX从控制器获取JSON数据失败,javascript,jquery,ajax,asp.net-mvc,Javascript,Jquery,Ajax,Asp.net Mvc,我正在尝试使用AJAX从控制器查询数据,我的控制器是: [HttpGet] public ActionResult GetTestStatus(string userName) { var db = new SREvalEntities(); var allTests = db.Tests .Where(x => string.Equals(x.Owner, userName)) .Select(x => new { CreateDat
[HttpGet]
public ActionResult GetTestStatus(string userName)
{
var db = new SREvalEntities();
var allTests = db.Tests
.Where(x => string.Equals(x.Owner, userName))
.Select(x => new { CreateDate = x.CreateDate, EndDate = x.EndDate, Status = x.Status })
.OrderByDescending(x => x.CreateDate)
.ToList();
return Json(allTests, JsonRequestBehavior.AllowGet);
}
我在外部文件中的javascript代码是:
function Filter() {
var userAlias = document.getElementById("UserAliasInput");
var txt = "<tr><th>StartDate</th><th>EndDate</th><th>Status</th><th>Detail</th></tr>";
$.ajax({
url: '/TestStatus/GetTestStatus',
type: "GET",
dataType: "JSON",
data: { userName: userAlias },
success: function (results) {
$.each(results, function (i, result) {
txt += "<tr><td>" + result.CreateDate + "</td>";
txt += "<td>" + result.EndDate + "</td>";
txt += "<td>" + result.Status + "</td>";
txt += "<td><a href=\"\">Goto</a></td></tr>";
});
}
});
$("#ShowDetail").html(txt);
}
我的页面永远不会改变。我怎样才能让它工作?谢谢。因为您正在使用异步的
$.ajax()
。因此,在从API返回值之前,将调用$(“#showdail”).html(txt)
您应该在每个块之后设置html()
function Filter() {
var userAlias = document.getElementById("UserAliasInput");
var txt = "<tr><th>StartDate</th><th>EndDate</th><th>Status</th><th>Detail</th></tr>";
$.ajax({
url: '/TestStatus/GetTestStatus',
type: "GET",
dataType: "JSON",
data: { userName: userAlias.value }, //Use the value property here
success: function (results) {
$.each(results, function (i, result) {
txt += "<tr><td>" + result.CreateDate + "</td>";
txt += "<td>" + result.EndDate + "</td>";
txt += "<td>" + result.Status + "</td>";
txt += "<td><a href=\"\">Goto</a></td></tr>";
});
$("#ShowDetail").html(txt); //Move code to set text here
}
});
}
函数过滤器(){
var userAlias=document.getElementById(“UserAliasInput”);
var txt=“StartDateEndDateStatusDetail”;
$.ajax({
url:“/TestStatus/GetTestStatus”,
键入:“获取”,
数据类型:“JSON”,
数据:{userName:userAlias.value},//在此处使用value属性
成功:功能(结果){
$。每个(结果,函数(i,结果){
txt+=“”+result.CreateDate+“”;
txt+=“”+result.EndDate+“”;
txt+=“”+结果.状态+“”;
txt+=”;
});
$(“#showdail”).html(txt);//将代码移到此处设置文本
}
});
}
尝试以下功能
function Filter() {
var userAlias = $("#UserAliasInput").val();//change this
var txt = "<tr><th>StartDate</th><th>EndDate</th><th>Status</th><th>Detail</th></tr>";
$.ajax({
url: '/TestStatus/GetTestStatus',
type: "GET",
dataType: "JSON",
data: { userName: userAlias },
success: function (results) {
$.each(results, function (i, result) {
txt += "<tr><td>" + result.CreateDate + "</td>";
txt += "<td>" + result.EndDate + "</td>";
txt += "<td>" + result.Status + "</td>";
txt += "<td><a href=\"\">Goto</a></td></tr>";
});
$("#ShowDetail").html(txt);//place this in the success function
}
});
}
函数过滤器(){
var userAlias=$(“#UserAliasInput”).val();//更改此值
var txt=“StartDateEndDateStatusDetail”;
$.ajax({
url:“/TestStatus/GetTestStatus”,
键入:“获取”,
数据类型:“JSON”,
数据:{userName:userAlias},
成功:功能(结果){
$。每个(结果,函数(i,结果){
txt+=“”+result.CreateDate+“”;
txt+=“”+result.EndDate+“”;
txt+=“”+结果.状态+“”;
txt+=”;
});
$(“#showdail”).html(txt);//将其放入success函数中
}
});
}
谢谢。我照你说的做了,但没用。我添加警报(结果)代码>在成功回调中,页面不给出响应。通过键入/TestStatus/GetTestStaus?userName=。。。我可以看到控制器返回的JSON。@OnceJune,请使用{userName:userAlias.value}
抱歉再次打扰您。既然“$.ajax()”是异步的,那么在同一个函数中返回“$.ajax()”之后,我该怎么做呢?比如更新页面?谢谢你。@OnceJune,是的,你可以
function Filter() {
var userAlias = $("#UserAliasInput").val();//change this
var txt = "<tr><th>StartDate</th><th>EndDate</th><th>Status</th><th>Detail</th></tr>";
$.ajax({
url: '/TestStatus/GetTestStatus',
type: "GET",
dataType: "JSON",
data: { userName: userAlias },
success: function (results) {
$.each(results, function (i, result) {
txt += "<tr><td>" + result.CreateDate + "</td>";
txt += "<td>" + result.EndDate + "</td>";
txt += "<td>" + result.Status + "</td>";
txt += "<td><a href=\"\">Goto</a></td></tr>";
});
$("#ShowDetail").html(txt);//place this in the success function
}
});
}