javascript - 为什么光标、不透明度属性和 onclick 事件处理程序在 IE9 上不起作用

Question

我想在图像中创建一个部分，当我点击它时，它会提醒 hi。我知道有很多方法可以在图像上创建部分，但我想要这样。不透明度属性和光标属性似乎在 IE9 上不起作用，因为当我将鼠标悬停在该区域上时它不显示指针光标并且当我单击该部分时它也不会提醒您。但这在其他浏览器上工作正常。谁能解释为什么会这样？

$(window).load(function () {
  var myImg = document.getElementById("myImg");
  var myDiv = document.createElement("div");
  myDiv.style.position = "absolute";
  myDiv.style.width = "200px";
  myDiv.style.height = "200px";
  myDiv.style.top = "20px";
  myDiv.style.left = "20px";
  myDiv.style.position = "absolute";
  myDiv.style.cursor = "pointer";
  myDiv.style.border = "2px solid red";
  myDiv.style.opacity = 0.3;
  document.body.appendChild(myDiv);
  myDiv.onclick = function () {
    alert("hi");
  }
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<img id="myImg" src="http://myartzine.com/wp-content/uploads/2013/10/Gtelaviv_05.jpg">

Answer 1

对于游标，我必须告诉你，唯一的跨浏览器语法是:

element {
    cursor: pointer;
    cursor: hand;
}

还有一些关于游标的更多信息:

In the past the hand value was Microsoft's way of saying pointer; and IE 5.0 and 5.5 only support hand. Because it's the cursor value that's used most often, most other browsers have also implemented hand.

Since IE 6 and 7 support pointer, there's no more reason to use hand, except when older IEs are part of your target audience.

对于 Opacity ，IE 9 接受

    -ms-filter:"progid:DXImageTransform.Microsoft.Alpha(Opacity=50)";

检查 http://css-tricks.com/css-transparency-settings-for-all-broswers/

我认为对于 onClick 事件处理程序，

By default in IE9, Internet Options > Security Tab > Internet > Custom Level, scroll down to the Scripting section (near the bottom) and in Active Scripting is disabled, so put a check mark against Enable. And, this resolves the problem and the onclick works!!.