<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<script>
function Foo(){
getName=function(){
console.log(1);
}
return this;
}
Foo.getName=function(){
console.log(2);
}
Foo.prototype.getName=function(){
console.log(3);
}
var getName=function(){
console.log(4)
}
function getName(){
console.log(5);
}
Foo.getName()
getName();
Foo().getName();
getName();
new Foo.getName();
new Foo().getName();
new new Foo().getName();
</script>
</body>
</html>运行结果
