zhuanbang-javascript-notes/test-file.html at master · sany620/zhuanbang-javascript-notes · GitHub

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<!doctype html>
<html>
<head>
    <meta charset="UTF-8">
    <title>Document</title>
</head>
<body>
<a href="javascript:;" id="btn">00000000000</a>
<script>
    //这里是事件工具库；
    var EventUtil = {
        addHandler: function (element, type, handler) {
            if (element.addEventListener) {
                element.addEventListener(type, handler, false);
            } else if (element.attachEvent) {
                element.attachEvent("on" + type, handler);
            } else {
                element["on" + type] = handler;
            }
        },
        removeHandler: function (element, type, handler) {
            if (element.removeEventListener) {
                element.removeEventListener(type, handler, false);
            } else if (element.detachEvent) {
                element.detachEvent("on" + type, handler);
            } else {
                element["on" + type] = null;
            }
        },

        getEvent: function (event) {
            return event ? event : window.event;
        },
        getTarget: function (event) {
            return event.target || event.srcElement;
        },
        preventDefault: function (event) {
            if (event.preventDefault) {
                event.preventDefault();
            } else {
                event.returnValue = false;
            }
        },
        stopPropagation: function (event) {
            if (event.stopPropagation) {
                event.stopPropagation();
            } else {
                event.cancelBubbles = true;
            }
        },
        getRelatedTarget: function (event) {
            if (event.relatedTarger) {
                return event.relatedTarget;
            } else if (event.toElement) {
                return event.toElement;
            } else if (event.fromElement) {
                return event.fromElement;
            } else { return null; }

        }

    };

    //这里是绑定函数的代码；
    var handler={
        message:"Event handler",
        handleClick:function(e){
            console.log(this.message+":"+ e.type);
        }
    };
    var oBtn=document.getElementById("btn");
    oBtn.message="这是ID为btn的message属性";
//    EventUtil.addHandler(oBtn,"click",bind(handler.handleClick,handler));
    EventUtil.addHandler(oBtn,"click",handler.handleClick.bind(handler));//原生的bind方法；

</script>
</body>
</html>