Fill in a form with jQuery

All the answers are the exact same so I thought I'd post something different:

var inputs_to_values = {
    'coordX_0' : 'some value',
    'coordY_0' : 'some other value',
    'edit_0'   : 'N',
    'remove_0' : '_',
    'add_0'    : '-',
    'go_0'     : 'stop?'
};
$('#form_coord_0').find('input').val(function (index, value) {
    return inputs_to_values[this.id];
});

You can pass .val() a function, whatever is returned from the function for each element will be the new value:

A function returning the value to set.

this is the current element.

Receives the index position of the element in the set and the old value as arguments.

Source: http://api.jquery.com/val

The above code expects that each input will have a property in the inputs_to_values object so you can convert the ID of the input to the new value for that input.

Here is a demo: http://jsfiddle.net/zYfpE/

You can use the val() function to set input values

$("#coordX_0").val(123);  

Incidentally, your original code could be made to work by setting value property on the actual, underlying dom element. You access the dom element by indexing your jQuery results:

$("#coordX_0")[0].value = 123;