fix: 解决低版本 safari 浏览器中 chooseImage/chooseVideo 方法无效的问题

src/platforms/h5/service/api/media/choose-image.js

 import { fileToUrl } from 'uni-platform/helpers/file'
+import { updateElementStyle } from 'uni-shared'
 
 const {
   invokeCallbackHandler: invoke
@@ -9,7 +10,14 @@ let imageInput = null
 const _createInput = function (options) {
   let inputEl = document.createElement('input')
   inputEl.type = 'file'
-  inputEl.style = 'position: absolute;visibility: hidden;z-index: -999;width: 0;height: 0;'
+  updateElementStyle(inputEl, {
+    'position': 'absolute',
+    'visibility': 'hidden',
+    'z-index': -999,
+    'width': 0,
+    'height': 0
+  })
+  // inputEl.style = 'position: absolute;visibility: hidden;z-index: -999;width: 0;height: 0;'
   inputEl.accept = 'image/*'
   if (options.count > 1) {
     inputEl.multiple = 'multiple'

src/platforms/h5/service/api/media/choose-video.js

 import { fileToUrl } from 'uni-platform/helpers/file'
+import { updateElementStyle } from 'uni-shared'
 
 const {
   invokeCallbackHandler: invoke
@@ -9,7 +10,14 @@ let videoInput = null
 const _createInput = function (options) {
   let inputEl = document.createElement('input')
   inputEl.type = 'file'
-  inputEl.style = 'position: absolute;visibility: hidden;z-index: -999;width: 0;height: 0;'
+  updateElementStyle(inputEl, {
+    'position': 'absolute',
+    'visibility': 'hidden',
+    'z-index': -999,
+    'width': 0,
+    'height': 0
+  })
+  // inputEl.style = 'position: absolute;visibility: hidden;z-index: -999;width: 0;height: 0;'
   inputEl.accept = 'video/*'
   // 经过测试，仅能限制只通过相机拍摄，不能限制只允许从相册选择。
   if (options.sourceType.length === 1 && options.sourceType[0] === 'camera') {

src/shared/util.js

@@ -50,3 +50,9 @@ export function formatDateTime ({
     return date.getFullYear() + '-' + _completeValue(date.getMonth() + 1) + '-' + _completeValue(date.getDate())
   }
 }
+
+export function updateElementStyle (element, styles) {
+  for (let attrName in styles) {
+    element.style[attrName] = styles[attrName]
+  }
+}