$.get("test.php", function(data){
alert("Data Loaded: " + data);
});

$.ajax({
type: "POST",
url: "some.php",
data: "name=John&location=Boston",
success: function(msg){
alert( "Data Saved: " + msg );
}
});

test.php代碼
echo "ddddddd"

js代碼
$.get("test.php",{},function(data){
alert(data)//會彈出來ddddddd
});