<script language="javascript">
function Person(name, age){
this.name = name;
this.age = age;
this.say = sayFunc();
}
function sayFunc(){
alert(this.name+ ":" +this.age);
}
var person1 =new Person("张三",18);
person1.say();
</script>
运行结果this.name为空,this.age未定义
请问错在哪里?
追问：那要怎么改才正确？答案：<script language="javascript">
function Person(name,age){
this.name = name;
this.age = age;
this.say = function(){
alert(this.name + ":" + this.age);
};
}var person = new Person("张三",18);
function sayFunc(){
person.say();
</script>
alert(this.name+ ":" +this.age);
}
这个方法里面没有name，age要给sayFunc()方法带上参数sayFunc(name，age)才能传进来this.name是批量sayFunc的name和age,所以会出错
我修改了一下:
<!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">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
</head><body>
</body>
</html>
<script language="javascript">
function Person(name, age){
this.name = name;
this.age = age;
this.say = function(){sayFunc(this.name,this.age)};
}
function sayFunc(name,age){
alert(name+ ":" +age);
}
var person1 =new Person("张三",18);
person1.say()
</script>
