getJSON回调将不起作用

Question

I'm pretty knew to creating JSON objects and passing them on to the browser. For some reason, I'm not getting the callback to work.There is nothing on the console.

$('#id').change(function(){
    $.getJSON('ajax.cfm?id='+$(this).val()+'&callback=?',null,function(data){
        console.log('here');
    });
});

The call is being made, and it is returning a 200 status and the JSON object:

configuratorsObj({ 
    "Results" : 8,   
    "items" : [

        {
            vchrName: "Name1",
            itemID: 1782
        }, 
        {
            vchrName: "Name2",
            itemID: 1769
        }, 
        {
            vchrName: "Name3",
            itemID: 1756
        }, 
        {
            vchrName: "Name4",
            itemID: 404
        }, 
        {
            vchrName: "Name5",
            itemID: 248
        }, 
        {
            vchrName: "Name6",
            itemID: 1743
        }, 
        {
            vchrName: "Name7",
            itemID: 5786
        }, 
        {
            vchrName: "Name8",
            itemID: 469
        } 
]})

But the call back won't work, even with just a simple console.log('here'). There are no errors on the console.

Answer 1

The docs say that the data object -- your second parameter -- should be a plain object and is converted to a string and url-encoded before it is appended to the url. Try this:

$('#id').change(function(){
    var url = 'ajax.cfm?callback=?';
    var data = { id: $(this).val() };
    $.getJSON(url, data, function(data){
        console.log('here');
    });
});