Question

我没有找到专门解决的IE7模式版本。我尝试了各种版本，在Chrome，FF，IE9 +中运行良好，但在强制IE7模式下不在IE11中，客户端服务器设置要求:-(。

IE7模式警告“mousewheel”作为wheelEvent，但是甚至从不在鼠标滚轮上调用scrollHandler（）的第一个警报行，所以似乎没有通过window.attachEvent附加事件/处理程序？

        var wheelEvent = "onwheel" in document.createElement("div") ? "wheel" : // Modern browsers support "wheel"
          document.onmousewheel !== undefined ? "mousewheel" : // Webkit and IE support at least "mousewheel"
          "DOMMouseScroll"; // let's assume that remaining browsers are older Firefox

    function scrollHandler(wheelEvent) {
        alert("scrollHandler "+wheelEvent);
        //upDown = -1 on scroll-down, = 1 on scroll up

            if (wheelEvent.wheelDelta) {//chrome
                upDown = (wheelEvent.wheelDelta % 120 - 0) == -0 ? wheelEvent.wheelDelta / 120 : wheelEvent.wheelDelta / 12;
            } else {//FF
                var rawAmmount = wheelEvent.deltaY ? wheelEvent.deltaY : wheelEvent.detail;
                upDown = -(rawAmmount % 3 ? rawAmmount * 10 : rawAmmount / 3);
            }
            scroller(upDown);       
    }

    if (window.addEventListener) {//most browsers
        window.addEventListener(wheelEvent, scrollHandler );
    }else if (window.attachEvent){//IE7...
        alert("IE7 - window.attachEvent: " + wheelEvent);
        window.attachEvent(wheelEvent, scrollHandler);
    }

Answer 1

attachEvent对事件使用＆＃34;＆＃34; 前缀，因此您需要将代码更改为，并且需要将事件附加到文档而不是窗口。

else if (window.attachEvent){//IE7...
   alert("IE7 - window.attachEvent: " + wheelEvent);
   document.attachEvent("on"+wheelEvent, scrollHandler);
}

IE7模式下的IE11不会触发鼠标滚轮事件

1 个答案: