javascript - Jquery 自动完成 json 数据

Question

我有一个奇怪的问题:

首先我有这个代码:

var countries = dajjson();

$('#usluga').autocomplete({
    lookup: countries,
    onSelect: function (suggestion) {
        alert('You selected: ' + suggestion.ID + ', ' + suggestion.naziv);
    }
});
});

function dajjson() {
    $.ajax({
        url: "autoUsluge.php",
        type: "POST",
        async: true, 
        dataType: "html",

        success: function(data) {
            console.log(data);   
        }, 
        error: function (data) {
            console.log(data);
            console.log('GRESKA NEKA');
        }
    });
};

我的 JSON 是 - 函数 DAJJSON() 返回:

[{"ID":"4","naziv":"","opis":"Web dizajn","jmere":"komada","kol":"2","cena":"50","valuta":"Eur","popust":"5","porez":"20","user_id":"1"},{"ID":"5","naziv":"","opis":"Programiranje","jmere":"sati","kol":"5","cena":"10","valuta":"Eur","popust":"5","porez":"20","user_id":"1"},{"ID":"6","naziv":"","opis":"Popravka zadnjeg trapa na automobilu Audi","jmere":"komada","kol":"1","cena":"80","valuta":"Eur","popust":"5","porez":"20","user_id":"1"}]

以及我在哪里测试刚刚得到的代码:

Uncaught SyntaxError: Unexpected token <

Answer 1

在您使用的任何浏览器中打开开发人员工具(通常是 F12 或 Ctrl-Shift-I 或在菜单中的某个位置)。单击“网络”选项卡并运行您的代码。

查看对 AJAX 请求的响应。这不会是你所期望的:)

您传递给 AJAX 的 dataType 属性告诉服务器您期望的数据类型。您将其设置为 html，因此您的响应将采用 HTML 格式。从表面上看，您确实需要 json。