function Person (name, age) {
this.name = name;
this.age = age;
}
好像建構子,可以new Person();
var ageDifference = function(person1, person2) {
return person1.age - person2.age;
}
這卻是方法,是像static 方法
function Circle (radius) {
this.radius = radius;
this.area = function () {
return Math.PI * this.radius * this.radius;
};
// define a perimeter method here
};
像是建構子內,可以放方法
var a1=new Array();
建立陣列方法和JAVA不同 ,JAVA要給定空間!
字串相比可以使用"====",JAVA則需要Equl
function add(firstName, lastName, email, phoneNumber) {
contacts[contacts.length] = {
firstName: firstName,
lastName: lastName,
phoneNumber: phoneNumber,
email: email
};
}
可以無限增加陣列內的值!!!
var nyc = {
fullName: "New York City",
mayor: "Bill de Blasio",
population: 8000000,
boroughs: 5
};
這是物件nyc
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