在编写一个读取 address 信息的 ajax，回来一个空值，可是这个 function 拿出来单独使用，又是正常的，代码如下:

$("#formRequest #item_id").load(function() {
	var uid = $("#item_" + $(this).val()).val();
	getReceiver(uid,"#item_ship_receiver");
	getAddress(uid,"#item_ship_address");
	getPhone(uid,"#item_ship_phone");
	getEmail(uid,"#item_ship_email");
});

$("#formRequest #item_id").change(function() {
	var uid = $("#item_" + $(this).val()).val();
	getReceiver(uid,"#item_ship_email");
});

function getReceiver(uid,jqTarget) {
	$.getJSON(
		"http://www.tenso-japan.com/tenso/api.PHP/discuz/getMember/" + uid,function(data) {
			$(jqTarget).val(data.realname);
		}
	);
}

function getAddress(uid,jqTarget) {
var address = '';
console.log(uid);
$.ajax({
		url: "http://www.tenso-japan.com/tenso/api.PHP/discuz/getMember/" + uid,dataType: 'json',async: false,success: function(data) {
			address = data.address;
			console.log(data);
		}
	});
	console.log(address);
	/*
	$.getJSON(
		"http://www.tenso-japan.com/tenso/api.PHP/discuz/getMember/" + uid,function(data) {
			$(jqTarget).val(data.address);
		}
	);*/
}

function getPhone(uid,function(data) {
			$(jqTarget).val(data.mobile);
		}
	);
}

function getEmail(uid,function(data) {
			$(jqTarget).val(data.email);
		}
	);
}

待研究...