合并/合并文件列表 [英] Merging/combining Filelist

问题描述

我有两个包含相同格式的多个文件的Filelist对象，我想将其合并.

I've got two Filelist objects containing multiple files in a same form and I want to merge it.

  var data1 = $('#one')[0].files;
  var data2 = $('#two')[0].files;
  console.log(data1);
  console.log(data2);
  var obj = $.merge(data1,data2);
  console.log(obj);

我尝试了$.merge和$.extend，结果obj似乎具有所有文件，但是长度不正确:

I tried $.merge and $.extend, the result obj seems have all the files, but the length of it is incorrect:

FileList {2: File, 3: File, 0: File, 1: File, length: 2}

jsFiddle: https://jsfiddle.net/nxtdnhgu/

jsFiddle: https://jsfiddle.net/nxtdnhgu/

推荐答案

来自jquery文档.

From jquery documentation.

$.merge()函数具有破坏性.它将第一个对象的长度和数字索引属性更改为包括第二个对象的项.

The $.merge() function is destructive. It alters the length and numeric index properties of the first object to include items from the second.

如果需要原始的第一个数组，请在调用$ .merge()之前对其进行复制.

If you need the original first array, make a copy of it before calling $.merge().

var obj = $.merge( $.merge( [], data1 ), data2 );

正在工作的js小提琴: https://jsfiddle.net/t1n08ykd/

Working js fiddle: https://jsfiddle.net/t1n08ykd/

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