upload

2016-12-22 21:48:42 +08:00 · 2016-12-22 21:48:42 +08:00 · 342c2860b3
parent 0c626b43d1
commit 342c2860b3
3 changed files with 122 additions and 1 deletions
--- a/1
+++ b/1
@ -0,0 +1 @@
+Subproject commit c5cbe7128fa23d7524fb13e47a067abd53f3e093
--- a/1
+++ b/1
@ -1 +0,0 @@
-Subproject commit 4851a1ef486beefa6c1369fc075552d12ec19d8c
--- a/多图片上传.html
+++ b/多图片上传.html
@ -0,0 +1,121 @@
+<HTML>
+<HEAD>
+<script type="text/javascript">
+var i = 0; // 用来动态生成span,upfile的id
+function addAttachmentToList()
+{
+  if (findAttachment(event.srcElement.value)) return; //如果此文档已在图片列表中则不再添加
+    
+  // 动态创建图片信息栏并添加到图片列表中
+  var span = document.createElement('span');
+  span.id = '_attachment' + i;
+  span.innerHTML = extractFileName(event.srcElement.value) + '&nbsp;<a href="javascript:delAttachment(' + (i++) + ')"><font color="blue">删除</font></a><br/>';
+  span.title = event.srcElement.value;
+  G('attachmentList').appendChild(span);
+    
+  // 显示图片列表并变换添加图片按钮文本
+  if (G('attachmentList').style.display == 'none')
+  {
+  G('btnAdd').value = '继续添加';
+  G('attachmentList').style.display = '';
+  G('btnClear').style.display = '';
+  }
+
+  G('total').innerText = '当前选择上传'+ G('attachmentList').childNodes.length + '个图片';
+}
+
+function selectAttachment()
+{
+  // 先清除无效动态生成的多余upfile
+  cleanInvalidUpfile();
+    
+  // 动态创建上传控件并与span对应
+  var upfile = '<input type="file" style="display:none" onchange="addAttachmentToList();" id="_upfile'+i+'">';
+  document.body.insertAdjacentHTML('beforeEnd', upfile);
+  G('_upfile'+i).click();
+}
+
+function extractFileName(fn)
+{
+  return fn.substr(fn.lastIndexOf('\\')+1);
+}
+
+function findAttachment(fn)
+{
+  var o = G('attachmentList').getElementsByTagName('span');
+  for(var i=0;i<o.length;i++)
+  if (o[i].title == fn) return true;
+  return false;
+}
+
+function delAttachment(id)
+{
+  G('attachmentList').removeChild(G('_attachment'+id));
+  document.body.removeChild(G('_upfile'+id));
+    
+  // 当图片列表为空则不显示并且变化添加图片按钮文本
+  if (G('attachmentList').childNodes.length == 0)
+  {
+  G('btnAdd').value = '添加图片';
+  G('attachmentList').style.display = 'none';
+  G('btnClear').style.display = 'none';
+  }
+    
+  G('total').innerText = '当前选择上传'+ G('attachmentList').childNodes.length + '个图片';   
+}
+
+function cleanInvalidUpfile()
+{
+  var o = document.body.getElementsByTagName('input');
+  for(var i=o.length-1;i>=0;i--)
+  if (o[i].type == 'file' && o[i].id.indexOf('_upfile') == 0)
+  {
+  if (!G('_attachment'+o[i].id.substr(7)))
+  document.body.removeChild(o[i]);
+  }
+}
+
+function clearAttachment()
+{
+  var o = G('attachmentList').childNodes;
+  for(var i=o.length-1;i>=0;i--)
+  G('attachmentList').removeChild(o[i]);
+
+  o = document.body.getElementsByTagName('input');
+  for(var i=o.length-1;i>=0;i--)
+  if (o[i].type == 'file' && o[i].id.indexOf('_upfile') == 0)
+  {
+  document.body.removeChild(o[i]);
+  }  
+
+  G('btnAdd').value = '添加图片';
+  G('attachmentList').style.display = 'none';
+  G('btnClear').style.display = 'none';    
+  G('total').innerText = '当前选择上传0个图片';   
+    
+}
+
+function getAttachmentInfo()
+{
+  // 已知的js获取本地文件大小的三种方式
+
+}
+
+function G(id)
+{
+  return document.getElementById(id);
+}
+</script>
+</HEAD>
+<BODY>
+<fieldset style="border:1px solid;text-align:left;FONT-SIZE:12px;font-family: Verdana;padding:5px;">
+<form action="#">
+<input type="button" value="添加图片" id="btnAdd" onclick="selectAttachment();">&nbsp;
+<input type="button" value="清空图片" id="btnClear" style="display:none" onclick="clearAttachment();">
+<div id="attachmentList" style="margin:3px 0px 0px 0px;padding:4px 3px 4px 3px;display:none;border:1px solid "></div>
+<div id="total" style="margin:3px 0px 0px 0px;">当前选择上传0个图片</div>
+<div style="padding：10px 3px"><input type="submit" value="上传"></div>
+</form>
+
+</BODY>
+</HTML>
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				`Subproject commit c5cbe7128fa23d7524fb13e47a067abd53f3e093`
				`@ -1 +0,0 @@`
				`Subproject commit 4851a1ef486beefa6c1369fc075552d12ec19d8c`