document.execCommand('copy')是否有大小限制? [英] Does document.execCommand('copy') have a size limitation?

问题描述

我正在使用类似于此处所述的document.execCommand('copy'):

I am using document.execCommand('copy') similar to what is described here:

https://developers.google.com/web/updates/2015/04/cut-and-copy-commands

就我而言，我是将剑道网格中的数据放置到要复制的隐藏文本区域中.复制在2500至3000行之间，或大约350k的数据中，失败.

In my case, I'm placing data from a Kendo grid into a hidden textarea to be copied. Somewhere between 2500 and 3000 rows, or around 350k of data, the copy fails.

我已取消隐藏文本区域，以确保其获取网格的全部内容，并且该方法有效.我可以从可见的文本区域手动复制所有3000多个行.

I've unhidden the textarea to make sure it's getting the full contents of the grid, and that is working. I can copy all 3000+ rows manually from the visible textarea.

但是document.execCommand无法复制它.我要达到一些尺寸限制吗?

But document.execCommand fails to copy it. Is there some size limitation I'm reaching?

推荐答案

当您说复制失败"时，我假设您没有收到错误，但没有在剪贴板中添加任何内容.

When you say "fails to copy" I am assuming you are not getting an error but it's just not adding anything to the clipboard.

尝试取消隐藏文本区域，然后查看您的代码是否有效.

Try unhidding the textarea and see if your code works.

我遇到了一个隐藏的texarea类似的东西.我最终做了这样的事情.

I ran into something similar with a hidden texarea. I ended up doing something like this.

$('#txtCopy').show();
var copyData = document.querySelector('#txtCopy'); 

window.getSelection().removeAllRanges(); 
var range = document.createRange();
range.selectNodeContents(copyData);
window.getSelection().addRange(range);

var successful = document.execCommand('copy');

console.log(successful);
$('#txtCopy').hide();

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