“Walk” JSON response and populate form fields — more efficient approach?

Question

I know there is a far more elegant/efficient way of doing this (in php I would use foreach) but with jQuery how can I walk the var/val pairs of a JSON response and populate

Answer 1

If your results looks like this:

[{"field1":"value1","field2":"value2"}]

Then the code provided by Seb and Chetan works

$.each(data, function(i, item){
  $("#"+item.field).val(item.value);
});

If your results looks like this:

{"field1":"value1","field2":"value2"}

Then use this code

$.each(data, function(field, value){
  $("#"+field).val(value);
});

Answer 2

You can get rid of all "if" statements by replacing your $.each with this:

$.each(data, function(i, item){
  $("#"+item.field).val(item.value);
});

Answer 3

I noticed that element IDs are the same as fields in your JSON, how about:

$(document).ready(function() {
    $('#svendor_name').bind("change", function()
    {
        var svendor = $("#svendor_name").val();
        svendor = svendor.replace(/&/g, '*');
        $.getJSON("get_vendors.php?sname=" + svendor,
        function(data) {
                $.each(data, function(i, item) {
                    $('#' + item.field).val(item.value);
                });
        });
    });
});

Answer 4

What is wrong with this?

$.each(data,
    function(i, item) {
        $("#" + item.field).val(item.value);
    }
});