javascript 在 chrome 中，使用 window.Clipboard 对象，有没有办法捕获粘贴的文本？
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In chrome, using the window.Clipboard object, is there a way to capture pasted text?
提问by user1895546
You can capture an image. I am trying to figure out how to capture text. I'm guessing there isn't, for security reasons, but I wanted to make sure.
您可以捕捉图像。我想弄清楚如何捕获文本。出于安全原因，我猜没有，但我想确定一下。
Also is there a reference for this stuff? window.Clipboardobject isn't part of the v8 engine, it's a part of the chrome browser and I can't find official documentation for it.
还有这个东西的参考吗？window.Clipboardobject 不是 v8 引擎的一部分，它是 chrome 浏览器的一部分，我找不到它的官方文档。
回答by Malk
In the code you linked there is a pasteHandlerfunction with the following:
在您链接的代码中，有一个pasteHandler具有以下功能的函数：
// Get the items from the clipboard
var items = e.clipboardData.items;
if (items) {
// Loop through all items, looking for any kind of image
for (var i = 0; i < items.length; i++) {
if (items[i].type.indexOf("image") !== -1) {
// We need to represent the image as a file,
var blob = items[i].getAsFile();
// and use a URL or webkitURL (whichever is available to the browser)
// to create a temporary URL to the object
var URLObj = window.URL || window.webkitURL;
var source = URLObj.createObjectURL(blob);
// The URL can then be used as the source of an image
createImage(source);
}
}
}
Chrome developer frame is telling me that items[i] is a DataTransferItem(reference)
Chrome 开发者框架告诉我 items[i] 是一个DataTransferItem（参考）
On the reference page I see a kindproperty and a getAsString()method. The latter seems to require a callback function that receives the text as a parameter. So to handle text values using the above script you might modify the section I linked as follows:
在参考页面上，我看到了一个kind属性和一个getAsString()方法。后者似乎需要一个接收文本作为参数的回调函数。因此，要使用上述脚本处理文本值，您可以修改我链接的部分，如下所示：
// Get the items from the clipboard
var items = e.clipboardData.items;
if (items) {
// Loop through all items, looking for any kind of image
for (var i = 0; i < items.length; i++) {
if (items[i].type.indexOf("image") !== -1) {
// We need to represent the image as a file,
var blob = items[i].getAsFile();
// and use a URL or webkitURL (whichever is available to the browser)
// to create a temporary URL to the object
var URLObj = window.URL || window.webkitURL;
var source = URLObj.createObjectURL(blob);
// The URL can then be used as the source of an image
createImage(source);
}
if (items[i].kind === "string"){
items[i].getAsString(function(s) {
alert(s);
});
}
}
}
