javascript - 在回调中使用时如何更改ajax url

Question

如何将 url 从 /devices/cars 更改为 /devices/trucks？我改变了自动完成的来源，但原则上，我宁愿不重复回调。

$(function(){
    $("#autofield" ).autocomplete({
        source: function( request, response ) {
            $.ajax({
                dataType: "json",
                url: "/devices/cars",
                data: {term:request.term, type:'all', fields:['id','name']},
                success: function(json) {
                    var data=[];
                    for (var i = 0; i < json.length; i++) {
                        data.push({id:json[i].id,label:json[i].name});
                    }
                    response(data);
                }
            });
        },
        minLength: 2,
        select: function( event, ui ) {
            $(this).parent().find("input[name='itemId']").val(ui.item.id);
        }
    });

    $("#changeUrl").click(function() {
        //Change url from /devices/cars to /devices/trucks
        $("#autofield" ).val('').autocomplete( "option", "source", function( request, response ) {
            $.ajax({
                dataType: "json",
                url: "/devices/trucks",
                data: {term:request.term, type:'all', fields:['id','name']},
                success: function(json) {
                    var data=[];
                    for (var i = 0; i < json.length; i++) {
                        data.push({id:json[i].id,label:json[i].name});
                    }
                    response(data);
                }
            });
        } );
    });
});

Answer 1

我看到的最简单的方法是创建一个变量作为您的 url，除非我误解了您的问题。

var dynamicUrl = "/devices/cars";

$("#changeUrl").click(function() {
    dynamicUrl.val(dynamicUrl.val() == '/devices/cars' ? '/devices/trucks' : '/devices/cars');
});

$.ajax({
...
    url: dynamicUrl,
...