Dojo 入门

第一步,引入dojo.js dojo的发行包里有4个子目录,要引入的文件是名叫"dojo"的子目录里的dojo.js。 假设你是这样的目录结构:
    引用
    project | +--dojo-lib | | | +--dijit | +--dojo | +--dojox | +--util | +--dojo_hello_world.html
    Java代码
    <script type="text/javascript" src="./dojo-lib/dojo/dojo.js"></script>
    Java代码
    <script type="text/javascript" src="./dojo-lib/dojo/dojo.js"></script>
    Java代码
    <script type="text/javascript" src="./dojo-lib/dojo/dojo.js"></script>
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    <script type="text/javascript" src="./dojo-lib/dojo/dojo.js"></script> 
    <script type="text/javascript" src="./dojo-lib/dojo/dojo.js"></script>开始使用dojo 现在开始使用dojo的第一个函数:dojo.byId dojo.byId就等同于常用的document.getElement <input type="text" name="username" id="username" value="Mark" /> <script type="text/javascript"> var username = dojo.byId(’username’).value alert(username); </script> OK,是不是和普通的js库一样,没有任何玄机? dojo.addOnLoad 现在我们想在window.onload里面处理一点东西,就像Ext.onReady,这个东西在dojo里叫做dojo.addOnLoad Java代码
    dojo.addOnLoad(function(){
        var username = dojo.byId(’username’).value
        alert(username);
    });
    Java代码
    dojo.addOnLoad(function(){
        var username = dojo.byId(’username’).value
        alert(username);
    });
    Java代码
    dojo.addOnLoad(function(){
        var username = dojo.byId(’username’).value
        alert(username);
    });
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    dojo.addOnLoad(function(){
        var username = dojo.byId(’username’).value
        alert(username);
    });
    dojo.addOnLoad(function(){
     var username = dojo.byId(’username’).value
     alert(username);
    });dojo.connect OK,window.onload搞定了,那么如何监听普通的dom事件呢?没问题,强大的dojo.connect出场 Java代码
    <script type="text/javascript">
    function sayHello(event)
    {
        alert("Hello");
    }
    dojo.addOnLoad(function(){
        var btn = dojo.byId(’hello’);
        dojo.connect(btn,"onclick",sayHello);
    });
    </script>
    <input type="button" id="hello" value="Hello" />
    Java代码
    <script type="text/javascript">
    function sayHello(event)
    {
        alert("Hello");
    }
    dojo.addOnLoad(function(){
        var btn = dojo.byId(’hello’);
        dojo.connect(btn,"onclick",sayHello);
    });
 </script>
    <input type="button" id="hello" value="Hello" />
    Java代码
    <script type="text/javascript">
    function sayHello(event)
    {
        alert("Hello");
    }
    dojo.addOnLoad(function(){
        var btn = dojo.byId(’hello’);
        dojo.connect(btn,"onclick",sayHello);
    });
    </script>
    <input type="button" id="hello" value="Hello" />
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    <script type="text/javascript">
    function sayHello(event)
    {
        alert("Hello");
    }
    dojo.addOnLoad(function(){
        var btn = dojo.byId(’hello’);
        dojo.connect(btn,"onclick",sayHello);
    });
    </script>
    <input type="button" id="hello" value="Hello" /> 
    <script type="text/javascript">
    function sayHello(event)
    {
     alert("Hello");
    }
    dojo.addOnLoad(function(){
     var btn = dojo.byId(’hello’);
     dojo.connect(btn,"onclick",sayHello);
    });
    </script>
    <input type="button" id="hello" value="Hello" />
    是不是和prototype的Event.observe($(’btnAdd’), "load", doAdd)差不多? 用prototype时最烦的就是那个长长的bindAsListener了,使用dojo.conncect,可以在第三个参数中指定当前的scope: Java代码
    var name = "Mark"
    function sayHello()
    {
        alert("Hello " + this.name);
    }
    var obj = {
        name: "Karl"
    }
    dojo.addOnLoad(function(){
        var btn = dojo.byId(’hello’);
        dojo.connect(btn,"onclick",obj,sayHello);//注意这行的第三个和第四个参数
    });
    Java代码
    var name = "Mark"
    function sayHello()
    {
        alert("Hello " + this.name);
    }
    var obj = {
        name: "Karl"
    }
    dojo.addOnLoad(function(){
        var btn = dojo.byId(’hello’);
        dojo.connect(btn,"onclick",obj,sayHello);//注意这行的第三个和第四个参数
    });
    Java代码
    var name = "Mark"
    function sayHello()
    {
        alert("Hello " + this.name);
    }
    var obj = {
        name: "Karl"
    }
    dojo.addOnLoad(function(){
        var btn = dojo.byId(’hello’);
        dojo.connect(btn,"onclick",obj,sayHello);//注意这行的第三个和第四个参数
    });
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    var name = "Mark"
    function sayHello()
    {
        alert("Hello " + this.name);
    }
    var obj = {
        name: "Karl"
    }
    dojo.addOnLoad(function(){
        var btn = dojo.byId(’hello’);
        dojo.connect(btn,"onclick",obj,sayHello);//注意这行的第三个和第四个参数
    });
    var name = "Mark"
    function sayHello()
    {
     alert("Hello " + this.name);
    }
    var obj = {
     name: "Karl"
    }
    dojo.addOnLoad(function(){
     var btn = dojo.byId(’hello’);
     dojo.connect(btn,"onclick",obj,sayHello);//注意这行的第三个和第四个参数
    });
    OK,点击按钮,将输出:Hello Karl 这里dojo.connect的第三个参数变成了scope,而handler函数是第四个,实际上 dojo.connect(btn,"onclick",sayHello); 与 dojo.connect(btn,"onclick",null,sayHello); 相同。 更加复杂的用法这里不作介绍,写太多就越搞越复杂了,后面再写文章详细介绍dojo.connect,这里只简单介绍如何绑定DOM事件。 xmlhttp dojo.xhrGet OK,介绍了简单的DOM操作方法,接下来该到Ajax的传统项目-XmlHttp了 在使用xmlhttp时,需要注意到编码的问题,要让dojo默认绑定为utf-8怎么办呢?很简单,只需要修改一下引入dojo.js时的标签: Java代码
    <script type="text/javascript" src="./dojo-lib/dojo/dojo.js" djConfig="isDebug:true,bindEncoding:’UTF-8’"></script>
    Java代码
    <script type="text/javascript" src="./dojo-lib/dojo/dojo.js" djConfig="isDebug:true,bindEncoding:’UTF-8’"></script>
    Java代码
    <script type="text/javascript" src="./dojo-lib/dojo/dojo.js" djConfig="isDebug:true,bindEncoding:’UTF-8’"></script>
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    <script type="text/javascript" src="./dojo-lib/dojo/dojo.js" djConfig="isDebug:true,bindEncoding:’UTF-8’"></script>
    <script type="text/javascript" src="./dojo-lib/dojo/dojo.js" djConfig="isDebug:true,bindEncoding:’UTF-8’"></script>多了一个djConfig属性,很简单,第一个isDebug是说是否打开FireBug的Console,第二个是xmlhttp使用的编码。第二个才是重点,设置了就一劳永逸了。 这次我们要点击了hello按钮后发出一个xmlhttp请求: Java代码
    function sayHello() {
        dojo.xhrGet({
            url: "http://localhost/hello/sayHello.jsp",
            handleAs: "text",
            load: function(responseText)
            {
              alert(responseText);
              dojo.byId("divHello").innerHTML = responseText;
            },
            error: function(response)
            {
              alert("Error");
            }
        });
    }
    dojo.connect(btn,"onclick",sayHello);
    Java代码
    function sayHello() {
        dojo.xhrGet({
            url: "http://localhost/hello/sayHello.jsp",
            handleAs: "text",
            load: function(responseText)
            {
              alert(responseText);
              dojo.byId("divHello").innerHTML = responseText;
            },
            error: function(response)
            {
              alert("Error");
            }
        });
    }
 dojo.connect(btn,"onclick",sayHello);
    Java代码
    function sayHello() {
        dojo.xhrGet({
            url: "http://localhost/hello/sayHello.jsp",
            handleAs: "text",
            load: function(responseText)
            {
              alert(responseText);
              dojo.byId("divHello").innerHTML = responseText;
            },
            error: function(response)
            {
              alert("Error");
            }
        });
    }
    dojo.connect(btn,"onclick",sayHello);
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    function sayHello() {
        dojo.xhrGet({
            url: "http://localhost/hello/sayHello.jsp",
            handleAs: "text",
            load: function(responseText)
            {
              alert(responseText);
              dojo.byId("divHello").innerHTML = responseText;
            },
            error: function(response)
            {
              alert("Error");
            }
        });
    }
    dojo.connect(btn,"onclick",sayHello); 
    function sayHello() {
        dojo.xhrGet({
            url: "http://localhost/hello/sayHello.jsp",
            handleAs: "text",
            load: function(responseText)
            {
              alert(responseText);
              dojo.byId("divHello").innerHTML = responseText;
            },
            error: function(response)
            {
              alert("Error");
            }
        });
    }
    dojo.connect(btn,"onclick",sayHello);看看,够不够一目了然? url 就是url…… handleAs 把获取的内容作为text/html load 成功时的回调函数 error 失败时的回调函数 那如果要传入参数怎么办? Java代码
    var params = {
        username:’Mark’,
        id:’105’
    }
    dojo.xhrGet({
        url: "http://localhost/hello/sayHello.jsp",
        content:params,
        //...
    });
    Java代码
    var params = {
        username:’Mark’,
        id:’105’
    }
    dojo.xhrGet({
        url: "http://localhost/hello/sayHello.jsp",
        content:params,
        //...
    });
    Java代码
    var params = {
        username:’Mark’,
        id:’105’
    }
    dojo.xhrGet({
        url: "http://localhost/hello/sayHello.jsp",
        content:params,
        //...
    });
    view plaincopy to clipboardprint?
    var params = {
        username:’Mark’,
        id:’105’
    }
    dojo.xhrGet({
        url: "http://localhost/hello/sayHello.jsp",
        content:params,
        //...
    });
    var params = {
        username:’Mark’,
        id:’105’
    }
    dojo.xhrGet({
        url: "http://localhost/hello/sayHello.jsp",
        content:params,
        //...
    });
    注意那个content参数,你要传入的参数是个关联数组/object,dojo会自动把参数解析出来,要使用post方法? dojo.xhrGet ---> dojo.xhrPost 其他的还有 dojo.xhrPut dojo.xhrDelete json 那要是我想更换获取到的数据类型,比如json?xml? 修改handleAs即可,如: handleAs: "json" Java代码
    dojo.xhrGet({
        url: "http://localhost/hello/sayHello.jsp",
        handleAs: "json",
        load: function(json)
        {
            alert(json.name)
        }
        //...
    });
    Java代码
    dojo.xhrGet({
        url: "http://localhost/hello/sayHello.jsp",
        handleAs: "json",
        load: function(json)
        {
            alert(json.name)
        }
        //...
    });
    Java代码
dojo.xhrGet({
        url: "http://localhost/hello/sayHello.jsp",
        handleAs: "json",
        load: function(json)
        {
            alert(json.name)
        }
        //...
    });
    view plaincopy to clipboardprint?
    dojo.xhrGet({
        url: "http://localhost/hello/sayHello.jsp",
        handleAs: "json",
        load: function(json)
        {
            alert(json.name)
        }
        //...
    }); 
    dojo.xhrGet({
        url: "http://localhost/hello/sayHello.jsp",
        handleAs: "json",
        load: function(json)
        {
            alert(json.name)
        }
        //...
    });
    引用
    handleAs: "json-comment-filtered" 使用注释符号/**/把json数据包含起来,推荐使用 handleAs: "json-comment-optional" 首先尝试使用json-comment-filtered,如果执行错误,再使用普通的json格式解析 handleAs: "javascript" dojo尝试把服务器返回的数据当作javascript执行,并把结果作为参数传递给load函数 handleAs: "xml" xml对象。注意在Mozilla和IE中的xml是不同的,推荐使用sarissa
    至于json和object的转换等,在http://dojotoolkit.org/book/dojo-book-0-9/part-3- programmatic-dijit-and-dojo/other-miscellaneous-function/converting-json 有一个表格,应该能找到你需要的。 想要直接提交一个表单,就这样: Java代码
    dojo.xhrGet({
        url: "http://localhost/hello/sayHello.jsp",
        form: dojo.byId("form1")
        //...
    });
    Java代码
    dojo.xhrGet({
        url: "http://localhost/hello/sayHello.jsp",
        form: dojo.byId("form1")
        //...
    });
    Java代码
    dojo.xhrGet({
        url: "http://localhost/hello/sayHello.jsp",
        form: dojo.byId("form1")
        //...
    });
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    dojo.xhrGet({
        url: "http://localhost/hello/sayHello.jsp",
        form: dojo.byId("form1")
        //...
    });
    dojo.xhrGet({
        url: "http://localhost/hello/sayHello.jsp",
        form: dojo.byId("form1")
        //...
    });
    要解决IE下那个臭名昭著的缓存问题,就这样,preventCache会帮你自动生成一个timestamp Java代码
    dojo.xhrGet({
        url: "http://localhost/hello/sayHello.jsp",
        preventCache: true
        //...
    });
    Java代码
    dojo.xhrGet({
        url: "http://localhost/hello/sayHello.jsp",
        preventCache: true
        //...
    });
    Java代码
    dojo.xhrGet({
        url: "http://localhost/hello/sayHello.jsp",
        preventCache: true
        //...
    });
    view plaincopy to clipboardprint?
    dojo.xhrGet({
        url: "http://localhost/hello/sayHello.jsp",
        preventCache: true
        //...
    });
    dojo.xhrGet({
        url: "http://localhost/hello/sayHello.jsp",
        preventCache: true
        //...
    });
    dojo.hitch scope/context 既然用到了xmlhttp,一个常见的问题就是回调函数的scope/context。在prototype、mootools里我们常用Function.bind,在dojo中,做相同事情的东西叫做dojo.hitch Java代码
    var handler = {
        name:’Mark’,
        execute1: function(){
            dojo.xhrGet({
                url: "http://localhost/hello/sayHello.jsp",
                handleAs: "text",
                error: function(text)
                {
                    console.dir(this);
                    alert(this.name);//输出undefined,这里的this表示当前io参数
                }
                //...
            });
        },
        load: function(text){
            alert(this.name);
        },
        execute2: function(){
            dojo.xhrGet({
                url: "http://localhost/hello/sayHello.jsp",
                handleAs: "text",
                error: dojo.hitch(this,"load") //输出Mark
                //error: dojo.hitch(this,this.load); //与上一句相同,知道为什么要用方法名字而不是引用了吧?省去了长长的一串this.xxx
                //...
            });
        }
    }
    Java代码
    var handler = {
        name:’Mark’,
        execute1: function(){
            dojo.xhrGet({
                url: "http://localhost/hello/sayHello.jsp",
                handleAs: "text",
                error: function(text)
                {
                    console.dir(this);
                    alert(this.name);//输出undefined,这里的this表示当前io参数
                }
                //...
            });
        },
        load: function(text){
            alert(this.name);
        },
        execute2: function(){
            dojo.xhrGet({
                url: "http://localhost/hello/sayHello.jsp",
                handleAs: "text",
                error: dojo.hitch(this,"load") //输出Mark
                //error: dojo.hitch(this,this.load); //与上一句相同,知道为什么要用方法名字而不是引用了吧?省去了长长的一串this.xxx
                //...
            });
        }
    }
    Java代码
    var handler = {
        name:’Mark’,
        execute1: function(){
            dojo.xhrGet({
                url: "http://localhost/hello/sayHello.jsp",
                handleAs: "text",
                error: function(text)
                {
                    console.dir(this);
                    alert(this.name);//输出undefined,这里的this表示当前io参数
                }
                //...
            });
        },
        load: function(text){
            alert(this.name);
        },
 execute2: function(){
            dojo.xhrGet({
                url: "http://localhost/hello/sayHello.jsp",
                handleAs: "text",
                error: dojo.hitch(this,"load") //输出Mark
                //error: dojo.hitch(this,this.load); //与上一句相同,知道为什么要用方法名字而不是引用了吧?省去了长长的一串this.xxx
                //...
            });
        }
    }
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    var handler = {
        name:’Mark’,
        execute1: function(){
            dojo.xhrGet({
                url: "http://localhost/hello/sayHello.jsp",
                handleAs: "text",
                error: function(text)
                {
                    console.dir(this);
                    alert(this.name);//输出undefined,这里的this表示当前io参数
                }
                //...
            });
        },
        load: function(text){
            alert(this.name);
        },
        execute2: function(){
            dojo.xhrGet({
                url: "http://localhost/hello/sayHello.jsp",
                handleAs: "text",
                error: dojo.hitch(this,"load") //输出Mark
                //error: dojo.hitch(this,this.load); //与上一句相同,知道为什么要用方法名字而不是引用了吧?省去了长长的一串this.xxx
                //...
            });
        }
    } 
    var handler = {
        name:’Mark’,
        execute1: function(){
            dojo.xhrGet({
                url: "http://localhost/hello/sayHello.jsp",
                handleAs: "text",
                error: function(text)
                {
                    console.dir(this);
                    alert(this.name);//输出undefined,这里的this表示当前io参数
                }
                //...
            });
        },
        load: function(text){
            alert(this.name);
        },
        execute2: function(){
            dojo.xhrGet({
                url: "http://localhost/hello/sayHello.jsp",
                handleAs: "text",
                error: dojo.hitch(this,"load") //输出Mark
                //error: dojo.hitch(this,this.load); //与上一句相同,知道为什么要用方法名字而不是引用了吧?省去了长长的一串this.xxx
                //...
            });
        }
    }
    OK,基本的东西解决了,还有很多常用的函数没有介绍,比如:dojo.query,dojo.forEach,dojo.marginBox,dojo.contentBox等等 这个就没事翻翻dojo.js.uncompressed.js源代码,dojo的文档是没啥好指望的了。 面向对象,定义Class 下一步我们看看dojo里如何定义Class: Java代码
    dojo.declare("Customer",null,{
        constructor:function(name){
            this.name = name;
        },
        say:function(){
            alert("Hello " + this.name);
        },
        getDiscount:function(){
            alert("Discount is 1.0");
        }
    });
    var customer1 = new Customer("Mark");
    customer1.say();
    Java代码
    dojo.declare("Customer",null,{
        constructor:function(name){
            this.name = name;
        },
        say:function(){
            alert("Hello " + this.name);
        },
        getDiscount:function(){
            alert("Discount is 1.0");
        }
    });
    var customer1 = new Customer("Mark");
    customer1.say();
    Java代码
    dojo.declare("Customer",null,{
        constructor:function(name){
            this.name = name;
        },
        say:function(){
            alert("Hello " + this.name);
        },
        getDiscount:function(){
            alert("Discount is 1.0");
        }
    });
    var customer1 = new Customer("Mark");
    customer1.say();
    view plaincopy to clipboardprint?
    dojo.declare("Customer",null,{
        constructor:function(name){
            this.name = name;
        },
        say:function(){
            alert("Hello " + this.name);
        },
        getDiscount:function(){
            alert("Discount is 1.0");
        }
    });
    var customer1 = new Customer("Mark");
    customer1.say();
    dojo.declare("Customer",null,{
        constructor:function(name){
      &,nbsp;     this.name = name;
        },
        say:function(){
            alert("Hello " + this.name);
        },
        getDiscount:function(){
            alert("Discount is 1.0");
        }
    });
    var customer1 = new Customer("Mark");
    customer1.say();
    declare有三个参数: 第一个 class名字 第二个 父类的引用 第三个 ... 构造函数的名字就叫做"construnctor" 再来看看如何继承: Java代码
    dojo.declare("VIP",Customer,{
        getDiscount:function(){
            alert("Discount is 0.8");
        }
    });
    var vip = new VIP("Mark");
    vip.say();
    vip.getDiscount();
    Java代码
    dojo.declare("VIP",Customer,{
        getDiscount:function(){
            alert("Discount is 0.8");
        }
    });
    var vip = new VIP("Mark");
    vip.say();
    vip.getDiscount();
    Java代码
    dojo.declare("VIP",Customer,{
        getDiscount:function(){
            alert("Discount is 0.8");
        }
    });
    var vip = new VIP("Mark");
    vip.say();
    vip.getDiscount();
    view plaincopy to clipboardprint?
    dojo.declare("VIP",Customer,{
        getDiscount:function(){
            alert("Discount is 0.8");
        }
    });
    var vip = new VIP("Mark");
    vip.say();
    vip.getDiscount();
    dojo.declare("VIP",Customer,{
        getDiscount:function(){
            alert("Discount is 0.8");
        }
    });
    var vip = new VIP("Mark");
    vip.say();
    vip.getDiscount();那么,如何调用父类的方法呢。使用this.inherited方法 Java代码
 dojo.declare("VIP",Customer,{
        getDiscount:function(){
            this.inherited(arguments);
            //this.inherited("getDiscount",arguments);
        }
    });
    Java代码
    dojo.declare("VIP",Customer,{
        getDiscount:function(){
            this.inherited(arguments);
            //this.inherited("getDiscount",arguments);
        }
    });
    Java代码
    dojo.declare("VIP",Customer,{
        getDiscount:function(){
            this.inherited(arguments);
            //this.inherited("getDiscount",arguments);
        }
    });
    view plaincopy to clipboardprint?
    dojo.declare("VIP",Customer,{
        getDiscount:function(){
            this.inherited(arguments);
            //this.inherited("getDiscount",arguments);
        }
    }); 
    dojo.declare("VIP",Customer,{
        getDiscount:function(){
            this.inherited(arguments);
            //this.inherited("getDiscount",arguments);
        }
    });
    关于构造函数: 父类构造函数总是被自动调用的,所以看下面的例子: Java代码
    dojo.declare("Customer",null,{
        constructor:function(name){
            this.name = name;
            alert("base class");
        },
        say:function(){
            alert(this.name);
        }
    });
    dojo.declare("VIP",Customer,{
        constructor:function(age){
            this.age = age;
            alert("child class");
        },
        say:function(){
            alert("name:" + this.name);
            alert("age:" + this.age);
        }
    });
    var vip = new VIP("123");//1
    vip.say();//2
    Java代码
    dojo.declare("Customer",null,{
        constructor:function(name){
            this.name = name;
            alert("base class");
        },
        say:function(){
            alert(this.name);
        }
    });
    dojo.declare("VIP",Customer,{
        constructor:function(age){
            this.age = age;
            alert("child class");
        },
        say:function(){
            alert("name:" + this.name);
            alert("age:" + this.age);
        }
    });
    var vip = new VIP("123");//1
    vip.say();//2
    Java代码
    dojo.declare("Customer",null,{
        constructor:function(name){
            this.name = name;
            alert("base class");
        },
        say:function(){
            alert(this.name);
        }
    });
    dojo.declare("VIP",Customer,{
        constructor:function(age){
            this.age = age;
            alert("child class");
        },
        say:function(){
            alert("name:" + this.name);
            alert("age:" + this.age);
        }
    });
    var vip = new VIP("123");//1
    vip.say();//2
    view plaincopy to clipboardprint?
    dojo.declare("Customer",null,{
        constructor:function(name){
            this.name = name;
            alert("base class");
        },
        say:function(){
            alert(this.name);
        }
    });
    dojo.declare("VIP",Customer,{
        constructor:function(age){
            this.age = age;
            alert("child class");
        },
        say:function(){
            alert("name:" + this.name);
            alert("age:" + this.age);
        }
    });
    var vip = new VIP("123");//1
    vip.say();//2
    dojo.declare("Customer",null,{
        constructor:function(name){
            this.name = name;
            alert("base class");
        },
        say:function(){
            alert(this.name);
        }
    });
    dojo.declare("VIP",Customer,{
        constructor:function(age){
            this.age = age;
            alert("child class");
        },
        say:function(){
            alert("name:" + this.name);
            alert("age:" + this.age);
        }
    });
    var vip = new VIP("123");//1
    vip.say();//2
  1将打印出两条alert语句,先是父类的构造函数,再是子类的。 2将输出"name: 123" "age: 123" 个人认为,这个特性并不好,因为javascript这种弱类型的语言中,根本无法确定构造函数中的参数是传递给谁的,就比如上面的语句执行后, name="123",age="123",那哪个才是正确的?这个问题在使用dojo Grid的model里就很麻烦,定义一个model得这样:new dojox.grid._data.Table(null,null,data);我要是想扩展这个Model,更麻烦,所有子类的构造函数都被父类给搞乱了。所以推荐的做法是使用关联数组作为构造函数的参数,就像Python里的关键字参数。 Java代码
    constructor:function(args){
        var args = args || {};
        this.name = args.name;
        this.age = args.age;
    }
    Java代码
    constructor:function(args){
        var args = args || {};
        this.name = args.name;
        this.age = args.age;
    }
    Java代码
    constructor:function(args){
        var args = args || {};
        this.name = args.name;
        this.age = args.age;
    }
    view plaincopy to clipboardprint?
    constructor:function(args){
        var args = args || {};
        this.name = args.name;
        this.age = args.age;
    } 
    constructor:function(args){
        var args = args || {};
        this.name = args.name;
        this.age = args.age;
    }
    多继承,mixin 说到继承,多继承的问题又来了。dojo支持多继承,准确地说,是mixin。还记得dojo.declare的第二个参数吗,就是表示父类的那个参数,这个参数可以是一个数组,数组的第一个元素作为声明的类的父类,其他的作为mixin。子类自动获得父类和mixin的所有方法,后面的 mixin的同名方法覆盖前面的方法 Java代码

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