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@assassin567/cut-file

v1.0.1

Published

前端本地客户端压缩图片,兼容IOS,Android,PC、自动按需加载文件

Downloads

4

Readme

Build Status npm version npm

演示

试试

简述

在客户端压缩好要上传的图片可以节省带宽更快的发送给后端,特别适合在移动设备上使用。

为什么需要

  1. 已踩过很多坑,经过几个版本迭代,以及很多很多网友的反馈帮助、机型测试

    • 图片扭曲、某些设备不自动旋转图片方向,没有jpeg压缩算法..
    • 不支持new Blob,formData构造的文件size为0..
    • 还有某些机型和浏览器(例如QQX5浏览器)莫名其妙的BUG..
  2. 按需加载(会根据对应设备自动异步载入JS文件,节省不必要带宽)

  3. 原生JS编写,不依赖例如jquery等第三方库,支持AMD or CMD规范。

如何获取

通过以下方式都可以下载:

  1. 执行npm i lrz(推荐)
  2. 执行bower install lrz

接着在页面中引入

<script src="./dist/lrz.bundle.js"></script>

如何使用

方式1:

如果您的图片来自用户拍摄或者上传的,您需要一个input file来获取图片。

<input id="file" type="file" accept="image/*" />

接着通过change事件可以得到用户选择的图片

document.querySelector('#file').addEventListener('change', function () {
	lrz(this.files[0])
        .then(function (rst) {
            // 处理成功会执行
            console.log(rst);
        })
        .catch(function (err) {
            // 处理失败会执行
        })
        .always(function () {
            // 不管是成功失败,都会执行
        });
});

方式2:

如果您的图片不是来自用户上传的,那么也可以直接传入图片路径。

lrz('./xxx/xx/x.png')
        .then(function (rst) {
            // 处理成功会执行
        })
        .catch(function (err){
            // 处理失败会执行
        })
        .always(function () {
            // 不管是成功失败,都会执行
        });
请一定记得附上以下内容:💡
请一定记得附上以下内容:🙈
请一定记得附上以下内容:💡

平台:微信..
设备:iPhone5 IOS7..
问题:问题描述..
  • Q:有时拍摄完照片后,页面自动刷新或闪退了。

  • A:虽然已作了优化处理,但内存似乎还是爆掉了,常见于低配android手机,建议每次只处理一张图片。

  • Q: 怎么批量上传图片?

  • A: 您可以自己写个循环来传入用户多选的图片,但在移动端上请谨慎处理,原因同上。

  • Q: 直接传入图片路径的无法生成图片

  • A: 可能是跨域的问题,具体请看CORS_enabled_image

  • Q: 想要商用可以吗?

  • A: 没问题,但请留意issue里已知的问题。