Javascript获取页面事件对象的getEvent函数兼容性写法

目录

• 1. 实践

实践

function getEvent() {
    if (document.all) {
        var iEevent = window.event;
        iEevent.target = window.event.srcElement;
        return iEevent;
    }
    var func = getEvent.caller;
    while (func != null) {
        var arg0 = func.arguments[0];
        if (arg0) {
            if ((arg0.constructor == Event || arg0.constructor == MouseEvent) || (typeof(arg0) == "object" && arg0.preventDefault && arg0.stopPropagation)) {
                return arg0;
            }
        }
        func = func.caller;
    }
    return null;
}