jQuery UI Autocomplete JSON gives error: Uncaught TypeError: Cannot use 'in' operator to search for '62' in

Question

I am having a great deal of trouble getting autocomplete to work on my page. When I enter 2 characters (\"OW\") into my search input, I get the preloader image (see below),

Answer 1

instead of writing replace data.keywords with JSON.parse(data) at this line : response($.map(data.keywords, function (item) {.

BR, Hazem

Answer 2

a little help that can be useful:

if you're using json, it might be that the "json object" isn't parsed, or you've overwritten the variable with others tings (like what I did stupidly recently).

for the first problem, be sure that your server know "application/json" MIME type, else use header (for PHP)

I mean, in PHP, use this before all:

header("Content-type: application/json");

Answer 3

here how you use the function for the source property

source:function(request,response) {
    var url = "your url";
    var postdata = "your data"; // normally you might use request.term to get the current user input
    $.ajax({url:url,data:postdata,success:function(responsedata){
        response($.parseJSON(responsedata))
    }});
}

The response function accepts array of JSON objects

Answer 4

It was a long road, but after many hours of experimenting I came up with this code:

$("#searchInput").autocomplete({
    source: function (request, response) {
        $.ajax({
            url: '@Url.Action("GetKeywords", "Home")',
            dataType: "json",
            data: {
                SearchTerm: request.term
            },
            success: function (data) {
                var parsed = JSON.parse(data);
                var newArray = new Array(parsed.length);
                var i = 0;

                parsed.forEach(function (entry) {
                    var newObject = {
                        label: entry.kwrdKeyWord
                    };
                    newArray[i] = newObject;
                    i++;
                });

                response(newArray);
            },
            error: function (message) {
                response([]);
            }
        });
    },
    minLength: 2
});

This appears to work fine. The truth is my keywords are unique, so I can live without the ID anyway.