1

我有以下功能:

// NATION
var x, y, z;
function flag(nation,area)
{
x = nation;
this.nation=nation;
var el=document.getElementById("desc");
el.innerHTML='The region you have selected is <b>'+area+'</b>';
document.getElementById("flag").innerHTML='<img src="images/flags/'+nation+'.jpg">';
}
// SERVICE
function output(service)
{
y = service;
this.service=service;
var el=document.getElementById("service-desc");
el.innerHTML='You have selected a <b>'+service+'</b> service.';
document.getElementById("clock").innerHTML='<img src="images/clock-'+service+'.png">';
}

一旦用户设置了变量:国家服务已经设置,那么我想运行这个函数:

function selectmodel()
{
xmlhttp=GetXmlHttpObject();
if (xmlhttp==null)
  {
  alert ("Your browser does not support XMLHTTP!");
  return;
  }
var location=x;
var time=y;
var weight=z;
var url="selectmodel.php";
url=url+'?location='+location+'&time='+time+'&weight='+weight;
xmlhttp.onreadystatechange=stateChanged1;
xmlhttp.open("GET",url,true);
xmlhttp.send(null);
window.location.hash="slider";
}
function stateChanged1()
{
if (xmlhttp.readyState==4)
  {
  document.getElementById("result").innerHTML=xmlhttp.responseText;
  }
}

请有人足够友善让我知道如何做到这一点?

谢谢,B。

编辑 - 抱歉忘了说变量来自 onclick's (onClick="flag('scotislands', 'Scottish Islands');")

4

1 回答 1

0

我猜你正在寻找——以真正的 Javascript 精神——寻找某种被触发的事件,也许甚至有一种方法,但在这种情况下,我只需从每个函数中调用一个检查:

var x = null;
var y = null;
var ...

function trySelectModel() {
  if (x == null) || (y == null) return;
  selectModel(); // Your function
}

function flag(...) {
  // Your existing code
  trySelectModel();
}

function output(service) {
  // Your existing code
  trySelectModel();
}

function selectmodel() {
  // Your existing code
}
于 2010-02-12T10:53:20.703 回答