AJAX is the ability to exchange data with a server, and then update parts of a web page without reloading the entire page – only the updated data reloads.
The following are some common AJAX methods. A complete list of AJAX methods can be found here along with more detailed descriptions of their intended use and syntax.
$.ajax() Method
The .ajax() method is used to perform an AJAX (asynchronous HTTP) request, and is mostly used for requests where the other methods cannot be used.
// on button click get some info and if successful place it in the HTML element
$('button').click(function() {
$.ajax({url: 'test.txt', success: function(result) {
$('#my_output').html(result);
}});
});
$.ajaxSetup() Method
The .ajaxSetup() method sets default values for future AJAX requests.
// on button click get some info and if successful place it in the HTML element
$('button').click(function() {
$.ajaxSetup({
url: 'test.txt',
success: function(result) {
$('#my_output').html(result);
}
});
$.ajax();
});
$.get() Method
The .get() method loads data from the server using an HTTP GET request.
// on button click get some info and create an alert
$('button').click(function() {
$.get('test.asp', function(data, status) {
alert('Data: ' + data + '\nStatus: ' + status);
});
});
$.post() Method
The .post() method loads data from the server using an HTTP POST request.
// on button click get some info and create an alert
$('button').click(function() {
$.post('test.asp',
{
name: 'Johnny Shay',
state: 'California'
},
function(data,status) {
alert('Data: ' + data + '\nStatus: ' + status);
});
});
We’d like to acknowledge that we learned a great deal of our coding from W3Schools and TutorialsPoint, borrowing heavily from their teaching process and excellent code examples. We highly recommend both sites to deepen your experience, and further your coding journey. We’re just hitting the basics here at 1SMARTchicken.
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jQUERY NOTES:
- To use jQuery on your site, it must first be downloaded from the official jQuery site and linked to in your document
head, or linked to via a CDN in your documenthead - It is generally good practice to place your jQuery code/function inside the document load function so that the action takes place ONLY after the document has finished loading
- When using jQuery, single or double quotation marks are acceptable and work identically to one another; choose whichever you prefer, and stay consistent
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