如何循环此功能? [英] how to loop this function?

问题描述

感谢这里的帮助，我有一种预览选择的图像并使用的方式上传的方法:

Thanks to some help on here I have a way of previewing images selected for and upload using:

<input type='file' name="files[]" onchange="readURL(this);" multiple />
<div id="previews"></div>

<script>
    function readURL(input) {
        if (input.files && input.files[0]) {

            var reader = new FileReader();

            reader.onload = function (e) {
                var container = $('#previews');
                var image = $('<img>').attr('src', e.target.result).width(150);
                image.appendTo(container);
            };
            reader.readAsDataURL(input.files[0]);
        }
    }
</script>

我想知道如何为输入中选择的每个文件循环此功能?我只是看不到在哪里使用.each()

I was wondering how to loop this function for each file selected on the input? I just don't see where to use something like .each()

我正在尝试这个..但是它在某处出错，因为它显示2个预览但两个图像都相同?

am trying this.. but its wrong somewhere, as it displays 2 previews but both of the same image?

function readURL(input) {
    $.each(input.files,function(i) {
        var reader = new FileReader();
        reader.onload = function (e) {
            var container = $('#previews');
            var image = $('<img>').attr('src', e.target.result).width(150);
            image.appendTo(container);
        };
        reader.readAsDataURL(input.files[0]);
    });
}

推荐答案

FileList ，就像数组一样.
您可以像其他数组一样在其上使用 jQuery.each .

input.files is a FileList, which acts like an array.
You can use jQuery.each on it like any other array.

这篇关于如何循环此功能?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！