refactor(tpl): rename file field name

Author: marjune163

src/tpl/assert/main.js

@@ -4,7 +4,7 @@
 		if (!upload || !upload.addEventListener) {
 			return;
 		}
-		var fileInput = upload.querySelector('.files');
+		var fileInput = upload.querySelector('.file');
 
 		var addClass = function (ele, className) {
 			ele && ele.classList && ele.classList.add(className);

src/tpl/assert/main.js.go

@@ -7,7 +7,7 @@ var upload = document.querySelector('.upload');
 if (!upload || !upload.addEventListener) {
 return;
 }
-var fileInput = upload.querySelector('.files');
+var fileInput = upload.querySelector('.file');
 var addClass = function (ele, className) {
 ele && ele.classList && ele.classList.add(className);
 };

src/tpl/page.html

@@ -21,7 +21,7 @@
 {{if .CanUpload}}
 	<div class="upload">
 		<form method="POST" action="{{.SubItemPrefix}}?upload" enctype="multipart/form-data">
-			<input type="file" name="files" multiple="multiple" class="files"/>
+			<input type="file" name="file" multiple="multiple" class="file"/>
 			<input type="submit" value="Upload" class="submit"/>
 		</form>
 	</div>

src/tpl/page.html.go

@@ -29,7 +29,7 @@ const pageTplStr = `
 {{if .CanUpload}}
 <div class="upload">
 <form method="POST" action="{{.SubItemPrefix}}?upload" enctype="multipart/form-data">
-<input type="file" name="files" multiple="multiple" class="files"/>
+<input type="file" name="file" multiple="multiple" class="file"/>
 <input type="submit" value="Upload" class="submit"/>
 </form>
 </div>