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javascript事件绑定1-模拟jquery可爱的东西

时间:2014-03-13 06:05:16      阅读:464      评论:0      收藏:0      [点我收藏+]

1、给对象添加事件attachEvent(兼容IE,不兼容ff、chrome)

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title>事件绑定</title>
    <script type="text/javascript">
        window.onload = function () {
            var btn1 = document.getElementById(‘btn1‘);
           //attachEvent给对象绑定事件,兼容IE,不兼容FF,chrome
            //第一个参数是绑定的事件每次,第二个参数是function
            btn1.attachEvent("onclick", function () {
               alert("我在IE上蹦蹦跳!");
            });
        } 
    </script>
</head>
<body>
    <input type="button" value="绑定" id="btn1" />
</body>
</html>

 不兼容FF、chrome

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2、兼容FF、chrome(IE9及以上也兼容)

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<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title>事件绑定</title>
    <script type="text/javascript">
        window.onload = function () {
            var btn1 = document.getElementById(btn1);
            //#region 兼容IE
//            btn1.attachEvent("onclick", function () {
//                alert("我是IE蹦蹦跳");
//            });
            //#endregion
            //addEventListener(事件名称但是没有"on"前缀,绑定的function,是否进行捕获(一般是false))
            btn1.addEventListener("click", function () {
                alert("我是FF、Chrome蹦蹦跳,IE9及以上也兼容");
            },false);
        } 
    </script>
</head>
<body>
    <input type="button" value="绑定" id="btn1" />
</body>
</html>
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3、兼容FF、chrome、ie

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<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title>事件绑定</title>
    <script type="text/javascript">
        window.onload = function () {
            var btn1 = document.getElementById(btn1);
            if (btn1.attachEvent) {//如果是IE
                btn1.attachEvent("onclick", function () {
                    alert("我是IE蹦蹦跳");
                });
            }
             else{//如果是非IE
                btn1.addEventListener("click", function () {
                    alert("我是FF、Chrome蹦蹦跳,IE9及以上也兼容");
                }, false);
            }
        }
    </script>
</head>
<body>
    <input type="button" value="绑定" id="btn1" />
</body>
</html>
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 4、封装起来

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<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title>事件绑定</title>
    <script type="text/javascript">
        window.onload = function () {
            var btn1 = document.getElementById(btn1);
            addEvent(btn1, click, function () { alert("我居然被包养了!!!"); });
            addEvent(btn1, click, function () { alert("我居然被封装了!!!"); });
        }

        //obj:绑定的对象,eventName:事件名称,fn:函数
        function addEvent(obj, eventName, fn) {
            if (obj.attachEvent) { 
                obj.attachEvent(on + eventName, fn);
            }
            else { 
                obj.addEventListener(eventName, fn, false);
            }
        }
    </script>
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 5、小小模拟jquery

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     $(function () { 
            alert("sss");
        });
        function $(paramArgs) {
            return new myQuery(paramArgs);
        }
        function myQuery(paramArgs) {
            var argType = typeof paramArgs;
             
            switch (argType) {
                case "function":
                    addEvent(window, "load", paramArgs);
                    break;
            }
        }
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 6、事件绑定应用:

      执行结果

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javascript事件绑定1-模拟jquery可爱的东西,布布扣,bubuko.com

javascript事件绑定1-模拟jquery可爱的东西

原文:http://www.cnblogs.com/zjflove/p/add.html

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