现在这个插件没有限制上传图片的长宽比例的功能，如何优化一下呢？
layui.extend({}).define(['layer', 'upload'], function (exports) {
var $ = layui.$,
layer = layui.layer,
upload = layui.upload,
allUploaded = {},
policyFailed = null,
uploadData = [],
prefixPath,
layerTitle,
filesss = {},
successCount = 0,
uploadCount = 0,
filesListView = null,
multiple = false,
multipleFileArray = [],
multipleFileKeyArray = [],
uplaod = layui.upload;
//加载样式
var Class = function (options) {
var that = this;
that.options = options;
that.init();
};
Class.prototype.init = function () {
var that = this,
options = that.options;
if (options.layerArea) {
layerArea = options.layerArea;
} else {
layerArea = 'auto';
}
if (options.multiple) {
multiple = true;
}
if (!that.strIsNull(that.options.fileType)) {
fileType = that.options.fileType;
} else {
fileType = 'file';
}
if (!that.strIsNull(that.options.httpStr)) {
httpStr = that.options.httpStr;
} else {
httpStr = 'https';
}
if (!that.strIsNull(that.options.policyFiled)) {
policyFiled = that.options.policyFiled;
} else {
policyFiled = 'policy';
}
if (!that.strIsNull(that.options.accessidFiled)) {
accessidFiled = that.options.accessidFiled;
} else {
accessidFiled = 'accessid';
}
if (!that.strIsNull(that.options.codeFiled)) {
codeFiled = that.options.codeFiled;
} else {
codeFiled = '';
}
if (!that.strIsNull(that.options.codeStatus)) {
codeStatus = that.options.codeStatus;
} else {
codeStatus = 0;
}
if (!that.strIsNull(that.options.signatureFiled)) {
signatureFiled = that.options.signatureFiled;
} else {
signatureFiled = 'signature';
}
if (!that.strIsNull(that.options.region)) {
region = that.options.region;
}
if (!that.strIsNull(that.options.prefixPath)) {
prefixPath = that.options.prefixPath;
} else {
prefixPath = '';
}
if (!that.strIsNull(that.options.policyUrl)) {
policyUrl = that.options.policyUrl;
}
if (typeof that.options.policyData != 'undefined') {
policyData = that.options.policyData;
} else {
policyData = {};
}
if (typeof that.options.policyHeader != 'undefined') {
policyHeader = that.options.policyHeader;
} else {
policyHeader = {};
}
if (typeof that.options.uploadRenderData != 'undefined') {
uploadRenderData = that.options.uploadRenderData;
} else {
uploadRenderData = {};
}
if (!that.strIsNull(that.options.policyMethod)) {
policyMethod = that.options.policyMethod;
} else {
policyMethod = 'GET';
}
if (!that.strIsNull(that.options.bucket)) {
bucket = that.options.bucket;
}
allUploaded[that.options.elm] = that.options.allUploaded;
policyFailed = that.options.policyFailed;
if (!that.strIsNull(that.options.layerTitle)) {
layerTitle = that.options.layerTitle;
} else {
layerTitle = '上传文件到阿里云OSS';
}
if (multiple) {
$(that.options.elm).on('click', function () {
layer.open({
type: 1,
area: layerArea, //宽高
resize: false,
title: layerTitle,
content: '<div class="layui-col-md12">' +
'<div class="layui-card">' +
'<div class="layui-card-body">' +
'<div class="layui-upload">' +
'<button type="button" class="layui-btn layui-btn-normal" id="test-upload-files">选择多文件</button>' +
'<div class="layui-upload-list">' +
'<table class="layui-table">' +
'<thead>' +
'<tr>' +
'<th>文件名</th>' +
'<th>大小</th>' +
'<th>状态</th>' +
'<th>操作</th>' +
'</tr>' +
'</thead>' +
'<tbody id="test-upload-filesList"></tbody>' +
'</table>' +
'</div>' +
'<button type="button" class="layui-btn" id="test-upload-filesAction">开始上传</button>' +
'</div>' +
'</div>' +
'</div>' +
'</div>',
success: function (layero, index) {
$('#test-upload-filesAction').on('click', function () {
if (typeof uploadListIns.config.files == 'undefined') {
layer.msg('请先选择要上传的文件!', {
shade: 'rgba(0,0,0,0)'
});
return;
}
layer.open({
type: 3,
icon: 1
});
//先获取police信息
$.ajax({
url: policyUrl,
type: policyMethod,
data: policyData,
headers: policyHeader,
success: function (res) {
var successStatus = false;
if (codeFiled) {
if (res[codeFiled] == codeStatus) {
successStatus = true;
}
} else {
successStatus = true;
}
if (successStatus) {
// 签名成功开始上传文件
var files = uploadListIns.config.files;
//清空原来返回的数组
uploadData = [];
var fileCount = 0;
for (var filekey in files) {
fileCount++;
}
res.data.signature = res.data[signatureFiled];
res.data.accessid = res.data[accessidFiled];
res.data.policy = res.data[policyFiled];
for (var filekey in files) {
var tr = filesListView.find('tr#upload-' + filekey),
tds = tr.children();
if (tds.eq(2).text() == '等待上传') {
that.uploadFile(files, filekey, fileCount, res.data);
} else {
// successCount++;
fileCount--;
if (fileCount == 0) {
layer.closeAll('loading');
layer.msg('没有文件需要上传');
}
}
}
} else {
policyFailed(res);
}
},
error: function (res) {
policyFailed(res);
}
});
})
filesListView = $('#test-upload-filesList'),
uploadListIns = upload.render($.extend({
elem: '#test-upload-files',
url: httpStr + '://' + bucket + '.' + region + '.aliyuncs.com',
accept: fileType,
multiple: true,
auto: false,
choose: function (obj) {
var files = this.files = obj.pushFile(); //将每次选择的文件追加到文件队列
//读取本地文件
obj.preview(function (index, file, result) {
var tr = $(['<tr id="upload-' + index + '">', '<td>' + file.name + '</td>', '<td>' + (file.size /
1014).toFixed(
1) + 'kb</td>', '<td>等待上传</td>', '<td>',
'<button class="layui-btn layui-btn-mini test-upload-demo-reload layui-hide">重传</button>',
'<button class="layui-btn layui-btn-mini layui-btn-danger test-upload-demo-delete">删除</button>',
'</td>',
'</tr>'
].join(''));
//删除
tr.find('.test-upload-demo-delete').on('click', function () {
delete files[index]; //删除对应的文件
tr.remove();
uploadListIns.config.elem.next()[0].value = ''; //清空 input file 值，以免删除后出现同名文件不可选
});
filesListView.append(tr);
});
}
}, uploadRenderData));
} //可以自行添加按钮关闭,关闭请清空rowData
,
end: function () {
if (options.success) {
if (typeof options.success === 'function') {
options.success();
}
}
}
});
})
} else {
upload
