作用域的问题

function a() {
this.name = "a";
var me = this;
setInterval(function(){time1(me)}, 1000 );
}

解决方案 »

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setInterval这种是系统调用的方法
不能直接用this
好像是不能用 this
加上一个局部变量还是遇到相同的问题
有其他解决方法么？
-----------------------------------------------------------<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>test</title>
</head>
<body><fieldset>
<legend>a</legend>
<p id="a1"></p>
</fieldset>
<fieldset>
<legend>b</legend>
<p id="b1"></p>
</fieldset><script language="javascript">
function $(s){
return document.getElementById(s);
}function a() {
this.name = "a";
var me = this;
setInterval( function(){time1(me)}, 1000 );
}
function time1(o){
var d = new Date();
$("a1").innerHTML = "(a) : " + o.name + " - " + d.getSeconds();
}function b() {
this.name = "b";
var me = this;
setInterval( function(){time2(me)}, 1000 );
}
function time2(o){
var d = new Date();
$("b1").innerHTML = "(b) : " + o.name + " - " + d.getSeconds();
}var at = a();
var bt = b();
</script></body>
</html>
var at = a();
var bt = b();
＝＝》
var at = new a();
var bt = new b();既然你已经使用了 this 这样的类写法，那你调用类的时候就应该用 new 来新开实例！
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>test</title>
</head>
<body><fieldset>
<legend>a</legend>
<p id="a1"></p>
</fieldset>
<fieldset>
<legend>b</legend>
<p id="b1"></p>
</fieldset><script language="javascript">
function $(s){
return document.getElementById(s);
}function a() {
this.name = "a";
var me = this;
setInterval( function(){time1(me)}, 1000 );
}
function time1(o){
var d = new Date();
$("a1").innerHTML = "(a) : " + o.name + " - " + d.getSeconds();
}function b() {
this.name = "b";
var me = this;
setInterval( function(){time2(me)}, 1000 );
}
function time2(o){
var d = new Date();
$("b1").innerHTML = "(b) : " + o.name + " - " + d.getSeconds();
}var at =new a();
var bt =new b();
</script></body>
</html>
是啊，这样做已经背离了this的初衷
再说你也用不着那样写类吧，象这样写，多方便哪！！<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>test</title>
</head>
<body><fieldset>
<legend>a</legend>
<p id="a1"></p>
</fieldset>
<fieldset>
<legend>b</legend>
<p id="b1"></p>
</fieldset><script language="javascript">
function $(s){return document.getElementById(s);}function mm(name)
{
  this.name = name;
  var me = this;
  setInterval( function(){me.timer()}, 1000 );
}
mm.prototype.timer=function()
{
  var d = new Date();
  $(this.name +"1").innerHTML = "("+ this.name +") : " + this.name + " - " + d.getSeconds();
}var at = new mm("a");
var bt = new mm("b");
</script></body>
</html>
呵呵，原来是酱紫，受教
javascript的函数，类都刚开始学习
有什么好的介绍这些方面的书么？
在csdn找了个中文版javascript权威指南
结果下载了解压缩错误:(
不知道各位谁有中文版的