关于JavaScript对象

踏雪浪人 2010-03-23 09:59:12

不知道为何报错，代码如下：
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<title>Untitled Document</title>
<script language="JavaScript" type="text/javascript">
var NewObj2 = function(num, aa){
NewObj2.add = function(){
alert("add...");
};
NewObj2.remove = function(){
};
NewObj2.getChild = function(){
};
NewObj2.save = function(){
};
};
try {
newObj2;//Error
}
catch (e) {
alert(e);
}
</script>
</head>
<body>
</body>
</html>

...全文

112 18 打赏收藏转发到动态举报

写回复

用AI写文章

18 条回复

切换为时间正序

请发表友善的回复…

发表回复

sjkof 2010-03-23

打赏
举报

因为8楼把NewObj2.add写在了NewObj2的构造函数里面了，所以只有执行了构造函数之后，
NewObj2.add才会有。

踏雪浪人 2010-03-23

打赏
举报

没人回答了吗？？

踏雪浪人 2010-03-23

打赏
举报

代码都被改了啊，那就不是原来的意思了！
晕，我在用JavaScript的静态方法（js没这个说法，是类名.方法名的调用方式），你试试10楼的代码！

踏雪浪人 2010-03-23

打赏
举报

不好意思，这是静态方法不能这么用，要类名.方法名！
[Quote=引用 12 楼 sandy945 的回复:]
HTML code

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<titl……
[/Quote]

阿非 2010-03-23

打赏
举报

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<title>Untitled Document</title>
<script language="JavaScript" type="text/javascript">
var NewObj2 = function(num, aa){
this.add = function(){
alert("add...");
};
this.remove = function(){
};
this.getChild = function(){
};
this.save = function(){
};
};
try {
var e=new NewObj2();
e.add();//Error
}
catch (e) {
alert(e);
}
</script>
</head>
<body>
</body>
</html>

踏雪浪人 2010-03-23

打赏
举报

sorry，是8楼！

阿非 2010-03-23

打赏
举报



<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">

<title>Untitled Document</title>

<script language="JavaScript" type="text/javascript">

var NewObj2 = function(num, aa){

this.add = function(){

alert("add...");

};

this.remove = function(){

};

this.getChild = function(){

};

this.save = function(){

};

};

try {

var e=new NewObj2();

e.add();//Error

}

catch (e) {

alert(e);

}

</script>

</head>

<body>

</body>

</html>

踏雪浪人 2010-03-23

打赏
举报

10楼是对的，但是9楼就不对！

踏雪浪人 2010-03-23

打赏
举报

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<title>Untitled Document</title>
<script language="JavaScript" type="text/javascript">
var NewObj2 = function(num, aa){

};
NewObj2.add = function(){
alert("add...");
};
NewObj2.remove = function(){
};
NewObj2.getChild = function(){
};
NewObj2.save = function(){
};
try {
NewObj2.add();//Error
}
catch (e) {
alert(e);
}
</script>
</head>
<body>
</body>
</html>

打字员 2010-03-23

打赏
举报



try {

newObj2;//你写错了，还是怎么回事，不是“NewObj2”吗？

}

踏雪浪人 2010-03-23

打赏
举报

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<title>Untitled Document</title>
<script language="JavaScript" type="text/javascript">
var NewObj2 = function(num, aa){
NewObj2.add = function(){
alert("add...");
};
NewObj2.remove = function(){
};
NewObj2.getChild = function(){
};
NewObj2.save = function(){
};
};
try {
NewObj2.add();//Error
}
catch (e) {
alert(e);
}
</script>
</head>
<body>
</body>
</html>

阿非 2010-03-23