$.ajax({
   type: "POST",
   url: "ajax.php",
   data: "Name=摘取天上星&position=IT技術",
   success: function(msg){alert(msg);},
   error: function(error){alert(error);}
 });

$.ajax({
   type: "POST",
   url:"ajax.php",
   data:$('#formID').serialize(),// 要提交的表單
   success: function(msg) {alert(msg);},
   error: function(error){alert(error);}
});
 

<script type="text/javascript" src="jquery-1.9.1.min.js"></script>
<script type="text/javascript">
$(function(){
   $("#button").click(function(){
     alert($("#formID").serialize());
   });
});
</script>
<form id="formID">
    姓名 <input value="摘取天上星" name="Name" />
    職位 <input value="IT技術" name="position" />
        <input id="button" value="提交" type="button" />
</form>
 

 將form中的值轉換為鍵值對：

// 如：{Name:'摘取天上星',position:'IT技術'}
// ps:注意將同名的放在一個數組裡
function getFormJson(form) {
	var o = {};
	var a = $(form).serializeArray();
	$.each(a, function () {
		if (o[this.name] !== undefined) {
			if (!o[this.name].push) {
				o[this.name] = [o[this.name]];
			}
			o[this.name].push(this.value || '');
		} else {
			o[this.name] = this.value || '';
		}
	});
	return o;
}
 

//除錯呼叫 
$(function(){
	$("#button").click(function(){
		alert(getFormJson("#formID"));
	});
});
//Ajax提交
$.ajax({
   type: "POST",
   url:"ajax.php",
   data:getFormJson($("#formID")),//表單資料JSON格式的函式引數裡填寫表單的ID或要提交的表單
   dataType: 'json',
   success: function(msg) {alert(msg);},
   error: function(error){alert(error);}
});

<form id="formID">
    姓名 <input value="摘取天上星" name="Name" />
    職位 <input value="IT技術" name="position" />
        <input id="button" value="提交" type="button" />
</form>