在模块模式中访问 jQuery 对象

发布于 2024-10-12 04:49:24 字数 1473 浏览 2 评论 0原文

真正深入了解 javascript 并研究一些模式。我遇到的一种是模块模式。这似乎是一种思考功能块的好方法，所以我继续尝试用 jQuery 来实现它。但我遇到了障碍。考虑下面的代码

    <!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-type" content="text/html; charset=utf-8">
        <title>index</title>        
        <script type="text/javascript" charset="utf-8" src="https://ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.min.js"></script>
        <script type="text/javascript" charset="utf-8">
            $(document).ready(function(){

                var TestClass2 = (function(){
                    var someDiv;            
                    return {
                        thisTest: function ()
                        {
                               someDiv = document.createElement("div");
                                   $(someDiv).append("#index");
                                   $(someDiv).html("hello");
                                   $(someDiv).addClass("test_class");
                        }
                    }
                })();

                TestClass2.thisTest();          

            });
        </script>

    </head>

    <body id="index" onload="">

        <div id="name">
            this is content
        </div>

    </body>
</html>

上面的代码警告div的html内容，然后添加一个类。它们都使用 jQuery 方法。问题是 .html() 方法工作正常，但我无法添加该类。没有错误结果，并且不会添加该类。这里发生了什么？为什么类没有添加到 div 中？

原文

Really getting in to javascript and looking around at some patterns. One I have come accross is the module pattern. Its seems like a nice way to think of chucks of functionality so I went ahead and tried to implement it with jQuery. I ran in to a snag though. Consider the following code

    <!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-type" content="text/html; charset=utf-8">
        <title>index</title>        
        <script type="text/javascript" charset="utf-8" src="https://ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.min.js"></script>
        <script type="text/javascript" charset="utf-8">
            $(document).ready(function(){

                var TestClass2 = (function(){
                    var someDiv;            
                    return {
                        thisTest: function ()
                        {
                               someDiv = document.createElement("div");
                                   $(someDiv).append("#index");
                                   $(someDiv).html("hello");
                                   $(someDiv).addClass("test_class");
                        }
                    }
                })();

                TestClass2.thisTest();          

            });
        </script>

    </head>

    <body id="index" onload="">

        <div id="name">
            this is content
        </div>

    </body>
</html>

The above code alerts the html content of the div and then adds a class. These both use jQuery methods. The problem is that the .html() method works fine however i can not add the class. No errors result and the class does not get added. What is happening here? Why is the class not getting added to the div?

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北凤男飞 2024-10-19 04:49:24

啊，既然你已经更新了你的问题，我可以更好地回答你的问题了。考虑到您想要将新创建的元素移动到已经存在的#index 内，您应该将追加更改为appendTo。

$(document).ready(function() {

var TestClass2 = (function() {
    var someDiv = $("#name");
    return {
        thisTest: function() {
            someDiv = document.createElement("div");
            $(someDiv)
                .html("hello")
                .addClass("test_class")
                .appendTo("#index");
        }
    }
})();

TestClass2.thisTest();

});

希望这有帮助！

Ah, now that you've updated your question I can better answer your question. You should change the append to appendTo considering you're wanting to move the newly created element inside of the already present #index.

$(document).ready(function() {

var TestClass2 = (function() {
    var someDiv = $("#name");
    return {
        thisTest: function() {
            someDiv = document.createElement("div");
            $(someDiv)
                .html("hello")
                .addClass("test_class")
                .appendTo("#index");
        }
    }
})();

TestClass2.thisTest();

});

Hope this helps!

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