如何从 Chrome 中的 dragstart 事件中获取所选项目?dataTransfer.getData 坏了吗?

I am part of a team that works on a Java application that, among other things, helps people organize and annotate information from the web. We currently use a Firefox plug-in that attaches a container attribute that contains a document source, which allows dragged text to become cited automatically. This will not always result in getting the source document because only text is transferred when a selection does not cross html tags. e.g.

<p container="http://www.somesite.com/blah.html">this is text from a site</p><p container="http://www.somesite.com/blah.html">this is more text from a site</p>

所以如果只选择了is text，html标签永远不会交叉，浏览器会认为环绕标签信息及其容器属性是不需要的；所以它会忽略它.

window.addEventListener("dragstart", function(event) {
console.log(event.dataTransfer.types);
console.log(event.dataTransfer.getData("Text"));     });

DOMStringList { 0="text/_moz_htmlcontext", 1="text/_moz_htmlinfo", 2="text/html", more...}
whatever text was selected

window.addEventListener("dragstart", function(event) {
    event.dataTransfer.setData("Text","I made this here for you!");
});