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<!DOCTYPE html>
<html>
<body>
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<h1>JavaScript 函数</h1>
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<p>此示例调用 person 的 fullName 方法，在 person2 上使用它：</p>
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<p id="demo"></p>
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<script>
var person = {
  fullName: function() {
    return this.firstName + " " + this.lastName;
  }
}
var person1 = {
  firstName:"Bill",
  lastName: "Gates"
}
var person2 = {
  firstName:"Steve",
  lastName: "Jobs"
}
x = person.fullName.call(person2); 
document.getElementById("demo").innerHTML = x; 
</script>
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</body>
</html>
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