Javascript 的數組Array有以下幾種建立方法
// 建立數組 Arrayvar computers = new Array();computers[0] = "Dell";computers[1] = "Acer";// 建立condensed arrayvar computers = new Array("Dell", "Acer");// 建立literal arrayvar computers = ["Dell", "Acer"];
遍曆數組可以這樣
// 遍曆數組for (var i = 0; i < computers.length; i++) { alert(computers[i]);}
JavaScript的對象是由一對花括弧{}包起來的。請看下面的例子:
// 建立objectvar computer = { brand: "Acer", price: 100.50, id: 6 };// 也可以這樣建立var computer = new Object();computer.brand = "Acer";computer.price = 100.50;computer.id = 6;// 也可以定義constructorfunction computer(brand, price, id) { this.brand = brand; this.price = price; this.id = id;}var computer1 = new computer("Acer", 100.50, 6);
上面brand為computer的屬性名稱,該屬性的值為Acer。以此類推,computer對象還有price和id兩個屬性。
擷取對象的屬性有兩種方式:
// access propertyvar v1 = computer.brand;var v2 = computer["brand"];
遍曆對象的屬性
// 遍曆object屬性for (var i in computer) { alert(i + ": " + computer[i]);}