调用函数后，Ajax数据进入文本框

Question

I have been looking at a few samples of ajax and realise that most of them will echo back the result. I have a few questions on jQuery/ajax

Is echo-ing the only it can return a data after the function processes it? Will it be possible for me to eg GRAB data from Textbox 1 2 3 and process it on process.php then pass the variable back via ajax and update the textbox's values?

Would be great if you have any samples on Grabbing data from textbox , pushing it to another php file and returning the variable to the actual form's textbox.

Thank you!

Answer 1

You may start with the following code:

$.ajax({
    type: "GET", //May try POST too
    url: "somefile.php",
    data: $("#txtBox").val(),
    dataType: 'text', 
    success: function(data) {
        $("#txtBox").val(data);
    },
    complete: function() {
        alert('Complete: Do something.');
    },
    error: function() {
        alert('Error: Do something.');
    }
});​

Please use this as a starting point and not as a copy-paste solution.