使用JSON使用jQuery填充UL

Question

這是我的JSON數據

[
    {"CountyId":2,"Name":"Snohomish","StateId":1,"State":null,"Plans":null},    
    {"CountyId":1,"Name":"Whatcom","StateId":1,"State":null,"Plans":null}
]

我正在嘗試使用此數據在我的網頁上填充UL。

function loadSavedCounties() {
    $.post("/Plans/GetPlanCounties/",
        { planId: $("#PlanId").val() },
        function (data) {
            populateSavedCounties($("#SavedCounties"), data);
        }
    );
}
function populateSavedCounties(select, data) {
    select.html('');
    var items = [];
    $.each(data, function (id, option) {
        items.push('<li>' + option.Name + '</li>');
    });  
    select.append(items.join(''));
}

我知道我已成功調用loadSavedQueries()因為我的UL已被select.html('')調用清除。 但沒有任何物品被放回UL。

更新中...

在明顯的修復和更改不起作用之后，我發現控制器中沒有拋出錯誤的問題，但基本上是返回空的JSON對象。 一旦我發現了這一點，數據開始流下來，建議的更改就可以了。

Answer 1

您可以在最后設置UL的html - 無需先清除它：

function populateSavedCounties(select, data) {
    var items = [];
    $.each(data, function (id, option) {
        items.push('<li>' + option.Name + '</li>');
    });  
    select.html(items.join(''));
}

Answer 2

這很容易，我先寫代碼，然后再回去解釋一下。

腳本

// You obviously know how to use .post
$.post("/Plans/GetPlanCounties/", { planId: $("#PlanId").val() }, function(data) {
    // out of simplicity, i did not create a seperate function, however you seem to know how to move functions around
    // below of course i simply assign a variable for reuse to the element you want
    var $this = $("#SavedCounties").empty();
    // instead of .each, I went on the premise that your data is returned exactly as stated above,
    // in which case, a simple old school for statement is easiest
    for (x in data) {
        // this is real simple, the first part creates a jQuery object of a List Element
        // the text part adds the text too it (aka, html you were wanting)
        // the last part appends the Li to the END of the UL
        $("<li />").text(data[x].Name).appendTo($this);
    };
});

沒有評論的最終結果非常簡短和甜蜜

$.post("/Plans/GetPlanCounties/", { planId: $("#PlanId").val() }, function(data) {
    var $this = $("#SavedCounties").empty();
    for (x in data) {
        $("<li />").text(data[x].Name).appendTo($this);
    };
});